+++ /dev/null
-# SPDX-License-Identifier: GPL-2.0-only
-TRACEEVENT-CFLAGS
-libtraceevent-dynamic-list
-libtraceevent.so.*
+++ /dev/null
-libtraceevent-y += event-parse.o
-libtraceevent-y += event-plugin.o
-libtraceevent-y += trace-seq.o
-libtraceevent-y += parse-filter.o
-libtraceevent-y += parse-utils.o
-libtraceevent-y += kbuffer-parse.o
-libtraceevent-y += tep_strerror.o
-libtraceevent-y += event-parse-api.o
+++ /dev/null
-include ../../../scripts/Makefile.include
-include ../../../scripts/utilities.mak
-
-# This Makefile and manpage XSL files were taken from tools/perf/Documentation
-# and modified for libtraceevent.
-
-MAN3_TXT= \
- $(wildcard libtraceevent-*.txt) \
- libtraceevent.txt
-
-MAN_TXT = $(MAN3_TXT)
-_MAN_XML=$(patsubst %.txt,%.xml,$(MAN_TXT))
-_MAN_HTML=$(patsubst %.txt,%.html,$(MAN_TXT))
-_DOC_MAN3=$(patsubst %.txt,%.3,$(MAN3_TXT))
-
-MAN_XML=$(addprefix $(OUTPUT),$(_MAN_XML))
-MAN_HTML=$(addprefix $(OUTPUT),$(_MAN_HTML))
-DOC_MAN3=$(addprefix $(OUTPUT),$(_DOC_MAN3))
-
-# Make the path relative to DESTDIR, not prefix
-ifndef DESTDIR
-prefix?=$(HOME)
-endif
-bindir?=$(prefix)/bin
-htmldir?=$(prefix)/share/doc/libtraceevent-doc
-pdfdir?=$(prefix)/share/doc/libtraceevent-doc
-mandir?=$(prefix)/share/man
-man3dir=$(mandir)/man3
-
-ASCIIDOC=asciidoc
-ASCIIDOC_EXTRA = --unsafe -f asciidoc.conf
-ASCIIDOC_HTML = xhtml11
-MANPAGE_XSL = manpage-normal.xsl
-XMLTO_EXTRA =
-INSTALL?=install
-RM ?= rm -f
-
-ifdef USE_ASCIIDOCTOR
-ASCIIDOC = asciidoctor
-ASCIIDOC_EXTRA = -a compat-mode
-ASCIIDOC_EXTRA += -I. -rasciidoctor-extensions
-ASCIIDOC_EXTRA += -a mansource="libtraceevent" -a manmanual="libtraceevent Manual"
-ASCIIDOC_HTML = xhtml5
-endif
-
-XMLTO=xmlto
-
-_tmp_tool_path := $(call get-executable,$(ASCIIDOC))
-ifeq ($(_tmp_tool_path),)
- missing_tools = $(ASCIIDOC)
-endif
-
-ifndef USE_ASCIIDOCTOR
-_tmp_tool_path := $(call get-executable,$(XMLTO))
-ifeq ($(_tmp_tool_path),)
- missing_tools += $(XMLTO)
-endif
-endif
-
-#
-# For asciidoc ...
-# -7.1.2, no extra settings are needed.
-# 8.0-, set ASCIIDOC8.
-#
-
-#
-# For docbook-xsl ...
-# -1.68.1, set ASCIIDOC_NO_ROFF? (based on changelog from 1.73.0)
-# 1.69.0, no extra settings are needed?
-# 1.69.1-1.71.0, set DOCBOOK_SUPPRESS_SP?
-# 1.71.1, no extra settings are needed?
-# 1.72.0, set DOCBOOK_XSL_172.
-# 1.73.0-, set ASCIIDOC_NO_ROFF
-#
-
-#
-# If you had been using DOCBOOK_XSL_172 in an attempt to get rid
-# of 'the ".ft C" problem' in your generated manpages, and you
-# instead ended up with weird characters around callouts, try
-# using ASCIIDOC_NO_ROFF instead (it works fine with ASCIIDOC8).
-#
-
-ifdef ASCIIDOC8
-ASCIIDOC_EXTRA += -a asciidoc7compatible
-endif
-ifdef DOCBOOK_XSL_172
-ASCIIDOC_EXTRA += -a libtraceevent-asciidoc-no-roff
-MANPAGE_XSL = manpage-1.72.xsl
-else
- ifdef ASCIIDOC_NO_ROFF
- # docbook-xsl after 1.72 needs the regular XSL, but will not
- # pass-thru raw roff codes from asciidoc.conf, so turn them off.
- ASCIIDOC_EXTRA += -a libtraceevent-asciidoc-no-roff
- endif
-endif
-ifdef MAN_BOLD_LITERAL
-XMLTO_EXTRA += -m manpage-bold-literal.xsl
-endif
-ifdef DOCBOOK_SUPPRESS_SP
-XMLTO_EXTRA += -m manpage-suppress-sp.xsl
-endif
-
-SHELL_PATH ?= $(SHELL)
-# Shell quote;
-SHELL_PATH_SQ = $(subst ','\'',$(SHELL_PATH))
-
-DESTDIR ?=
-DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
-
-export DESTDIR DESTDIR_SQ
-
-#
-# Please note that there is a minor bug in asciidoc.
-# The version after 6.0.3 _will_ include the patch found here:
-# http://marc.theaimsgroup.com/?l=libtraceevent&m=111558757202243&w=2
-#
-# Until that version is released you may have to apply the patch
-# yourself - yes, all 6 characters of it!
-#
-QUIET_SUBDIR0 = +$(MAKE) -C # space to separate -C and subdir
-QUIET_SUBDIR1 =
-
-ifneq ($(findstring $(MAKEFLAGS),w),w)
-PRINT_DIR = --no-print-directory
-else # "make -w"
-NO_SUBDIR = :
-endif
-
-ifneq ($(findstring $(MAKEFLAGS),s),s)
-ifneq ($(V),1)
- QUIET_ASCIIDOC = @echo ' ASCIIDOC '$@;
- QUIET_XMLTO = @echo ' XMLTO '$@;
- QUIET_SUBDIR0 = +@subdir=
- QUIET_SUBDIR1 = ;$(NO_SUBDIR) \
- echo ' SUBDIR ' $$subdir; \
- $(MAKE) $(PRINT_DIR) -C $$subdir
- export V
-endif
-endif
-
-all: html man
-
-man: man3
-man3: $(DOC_MAN3)
-
-html: $(MAN_HTML)
-
-$(MAN_HTML) $(DOC_MAN3): asciidoc.conf
-
-install: install-man
-
-check-man-tools:
-ifdef missing_tools
- $(error "You need to install $(missing_tools) for man pages")
-endif
-
-do-install-man: man
- $(call QUIET_INSTALL, Documentation-man) \
- $(INSTALL) -d -m 755 $(DESTDIR)$(man3dir); \
- $(INSTALL) -m 644 $(DOC_MAN3) $(DESTDIR)$(man3dir);
-
-install-man: check-man-tools man do-install-man
-
-uninstall: uninstall-man
-
-uninstall-man:
- $(call QUIET_UNINST, Documentation-man) \
- $(Q)$(RM) $(addprefix $(DESTDIR)$(man3dir)/,$(DOC_MAN3))
-
-
-ifdef missing_tools
- DO_INSTALL_MAN = $(warning Please install $(missing_tools) to have the man pages installed)
-else
- DO_INSTALL_MAN = do-install-man
-endif
-
-CLEAN_FILES = \
- $(MAN_XML) $(addsuffix +,$(MAN_XML)) \
- $(MAN_HTML) $(addsuffix +,$(MAN_HTML)) \
- $(DOC_MAN3) *.3
-
-clean:
- $(call QUIET_CLEAN, Documentation) $(RM) $(CLEAN_FILES)
-
-ifdef USE_ASCIIDOCTOR
-$(OUTPUT)%.3 : $(OUTPUT)%.txt
- $(QUIET_ASCIIDOC)$(RM) $@+ $@ && \
- $(ASCIIDOC) -b manpage -d manpage \
- $(ASCIIDOC_EXTRA) -alibtraceevent_version=$(EVENT_PARSE_VERSION) -o $@+ $< && \
- mv $@+ $@
-endif
-
-$(OUTPUT)%.3 : $(OUTPUT)%.xml
- $(QUIET_XMLTO)$(RM) $@ && \
- $(XMLTO) -o $(OUTPUT). -m $(MANPAGE_XSL) $(XMLTO_EXTRA) man $<
-
-$(OUTPUT)%.xml : %.txt
- $(QUIET_ASCIIDOC)$(RM) $@+ $@ && \
- $(ASCIIDOC) -b docbook -d manpage \
- $(ASCIIDOC_EXTRA) -alibtraceevent_version=$(EVENT_PARSE_VERSION) -o $@+ $< && \
- mv $@+ $@
-
-$(MAN_HTML): $(OUTPUT)%.html : %.txt
- $(QUIET_ASCIIDOC)$(RM) $@+ $@ && \
- $(ASCIIDOC) -b $(ASCIIDOC_HTML) -d manpage \
- $(ASCIIDOC_EXTRA) -aperf_version=$(EVENT_PARSE_VERSION) -o $@+ $< && \
- mv $@+ $@
+++ /dev/null
-## linktep: macro
-#
-# Usage: linktep:command[manpage-section]
-#
-# Note, {0} is the manpage section, while {target} is the command.
-#
-# Show TEP link as: <command>(<section>); if section is defined, else just show
-# the command.
-
-[macros]
-(?su)[\\]?(?P<name>linktep):(?P<target>\S*?)\[(?P<attrlist>.*?)\]=
-
-[attributes]
-asterisk=*
-plus=+
-caret=^
-startsb=[
-endsb=]
-tilde=~
-
-ifdef::backend-docbook[]
-[linktep-inlinemacro]
-{0%{target}}
-{0#<citerefentry>}
-{0#<refentrytitle>{target}</refentrytitle><manvolnum>{0}</manvolnum>}
-{0#</citerefentry>}
-endif::backend-docbook[]
-
-ifdef::backend-docbook[]
-ifndef::tep-asciidoc-no-roff[]
-# "unbreak" docbook-xsl v1.68 for manpages. v1.69 works with or without this.
-# v1.72 breaks with this because it replaces dots not in roff requests.
-[listingblock]
-<example><title>{title}</title>
-<literallayout>
-ifdef::doctype-manpage[]
- .ft C
-endif::doctype-manpage[]
-|
-ifdef::doctype-manpage[]
- .ft
-endif::doctype-manpage[]
-</literallayout>
-{title#}</example>
-endif::tep-asciidoc-no-roff[]
-
-ifdef::tep-asciidoc-no-roff[]
-ifdef::doctype-manpage[]
-# The following two small workarounds insert a simple paragraph after screen
-[listingblock]
-<example><title>{title}</title>
-<literallayout>
-|
-</literallayout><simpara></simpara>
-{title#}</example>
-
-[verseblock]
-<formalpara{id? id="{id}"}><title>{title}</title><para>
-{title%}<literallayout{id? id="{id}"}>
-{title#}<literallayout>
-|
-</literallayout>
-{title#}</para></formalpara>
-{title%}<simpara></simpara>
-endif::doctype-manpage[]
-endif::tep-asciidoc-no-roff[]
-endif::backend-docbook[]
-
-ifdef::doctype-manpage[]
-ifdef::backend-docbook[]
-[header]
-template::[header-declarations]
-<refentry>
-<refmeta>
-<refentrytitle>{mantitle}</refentrytitle>
-<manvolnum>{manvolnum}</manvolnum>
-<refmiscinfo class="source">libtraceevent</refmiscinfo>
-<refmiscinfo class="version">{libtraceevent_version}</refmiscinfo>
-<refmiscinfo class="manual">libtraceevent Manual</refmiscinfo>
-</refmeta>
-<refnamediv>
- <refname>{manname1}</refname>
- <refname>{manname2}</refname>
- <refname>{manname3}</refname>
- <refname>{manname4}</refname>
- <refname>{manname5}</refname>
- <refname>{manname6}</refname>
- <refname>{manname7}</refname>
- <refname>{manname8}</refname>
- <refname>{manname9}</refname>
- <refname>{manname10}</refname>
- <refname>{manname11}</refname>
- <refname>{manname12}</refname>
- <refname>{manname13}</refname>
- <refname>{manname14}</refname>
- <refname>{manname15}</refname>
- <refname>{manname16}</refname>
- <refname>{manname17}</refname>
- <refname>{manname18}</refname>
- <refname>{manname19}</refname>
- <refname>{manname20}</refname>
- <refname>{manname21}</refname>
- <refname>{manname22}</refname>
- <refname>{manname23}</refname>
- <refname>{manname24}</refname>
- <refname>{manname25}</refname>
- <refname>{manname26}</refname>
- <refname>{manname27}</refname>
- <refname>{manname28}</refname>
- <refname>{manname29}</refname>
- <refname>{manname30}</refname>
- <refpurpose>{manpurpose}</refpurpose>
-</refnamediv>
-endif::backend-docbook[]
-endif::doctype-manpage[]
-
-ifdef::backend-xhtml11[]
-[linktep-inlinemacro]
-<a href="{target}.html">{target}{0?({0})}</a>
-endif::backend-xhtml11[]
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_register_comm, tep_override_comm, tep_pid_is_registered,
-tep_data_comm_from_pid, tep_data_pid_from_comm, tep_cmdline_pid -
-Manage pid to process name mappings.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-int *tep_register_comm*(struct tep_handle pass:[*]_tep_, const char pass:[*]_comm_, int _pid_);
-int *tep_override_comm*(struct tep_handle pass:[*]_tep_, const char pass:[*]_comm_, int _pid_);
-bool *tep_is_pid_registered*(struct tep_handle pass:[*]_tep_, int _pid_);
-const char pass:[*]*tep_data_comm_from_pid*(struct tep_handle pass:[*]_pevent_, int _pid_);
-struct cmdline pass:[*]*tep_data_pid_from_comm*(struct tep_handle pass:[*]_pevent_, const char pass:[*]_comm_, struct cmdline pass:[*]_next_);
-int *tep_cmdline_pid*(struct tep_handle pass:[*]_pevent_, struct cmdline pass:[*]_cmdline_);
---
-
-DESCRIPTION
------------
-These functions can be used to handle the mapping between pid and process name.
-The library builds a cache of these mappings, which is used to display the name
-of the process, instead of its pid. This information can be retrieved from
-tracefs/saved_cmdlines file.
-
-The _tep_register_comm()_ function registers a _pid_ / process name mapping.
-If a command with the same _pid_ is already registered, an error is returned.
-The _pid_ argument is the process ID, the _comm_ argument is the process name,
-_tep_ is the event context. The _comm_ is duplicated internally.
-
-The _tep_override_comm()_ function registers a _pid_ / process name mapping.
-If a process with the same pid is already registered, the process name string is
-udapted with the new one. The _pid_ argument is the process ID, the _comm_
-argument is the process name, _tep_ is the event context. The _comm_ is
-duplicated internally.
-
-The _tep_is_pid_registered()_ function checks if a pid has a process name
-mapping registered. The _pid_ argument is the process ID, _tep_ is the event
-context.
-
-The _tep_data_comm_from_pid()_ function returns the process name for a given
-pid. The _pid_ argument is the process ID, _tep_ is the event context.
-The returned string should not be freed, but will be freed when the _tep_
-handler is closed.
-
-The _tep_data_pid_from_comm()_ function returns a pid for a given process name.
-The _comm_ argument is the process name, _tep_ is the event context.
-The argument _next_ is the cmdline structure to search for the next pid.
-As there may be more than one pid for a given process, the result of this call
-can be passed back into a recurring call in the _next_ parameter, to search for
-the next pid. If _next_ is NULL, it will return the first pid associated with
-the _comm_. The function performs a linear search, so it may be slow.
-
-The _tep_cmdline_pid()_ function returns the pid associated with a given
-_cmdline_. The _tep_ argument is the event context.
-
-RETURN VALUE
-------------
-_tep_register_comm()_ function returns 0 on success. In case of an error -1 is
-returned and errno is set to indicate the cause of the problem: ENOMEM, if there
-is not enough memory to duplicate the _comm_ or EEXIST if a mapping for this
-_pid_ is already registered.
-
-_tep_override_comm()_ function returns 0 on success. In case of an error -1 is
-returned and errno is set to indicate the cause of the problem: ENOMEM, if there
-is not enough memory to duplicate the _comm_.
-
-_tep_is_pid_registered()_ function returns true if the _pid_ has a process name
-mapped to it, false otherwise.
-
-_tep_data_comm_from_pid()_ function returns the process name as string, or the
-string "<...>" if there is no mapping for the given pid.
-
-_tep_data_pid_from_comm()_ function returns a pointer to a struct cmdline, that
-holds a pid for a given process, or NULL if none is found. This result can be
-passed back into a recurring call as the _next_ parameter of the function.
-
-_tep_cmdline_pid()_ functions returns the pid for the give cmdline. If _cmdline_
- is NULL, then -1 is returned.
-
-EXAMPLE
--------
-The following example registers pid for command "ls", in context of event _tep_
-and performs various searches for pid / process name mappings:
-[source,c]
---
-#include <event-parse.h>
-...
-int ret;
-int ls_pid = 1021;
-struct tep_handle *tep = tep_alloc();
-...
- ret = tep_register_comm(tep, "ls", ls_pid);
- if (ret != 0 && errno == EEXIST)
- ret = tep_override_comm(tep, "ls", ls_pid);
- if (ret != 0) {
- /* Failed to register pid / command mapping */
- }
-...
- if (tep_is_pid_registered(tep, ls_pid) == 0) {
- /* Command mapping for ls_pid is not registered */
- }
-...
- const char *comm = tep_data_comm_from_pid(tep, ls_pid);
- if (comm) {
- /* Found process name for ls_pid */
- }
-...
- int pid;
- struct cmdline *cmd = tep_data_pid_from_comm(tep, "ls", NULL);
- while (cmd) {
- pid = tep_cmdline_pid(tep, cmd);
- /* Found pid for process "ls" */
- cmd = tep_data_pid_from_comm(tep, "ls", cmd);
- }
---
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_get_cpus, tep_set_cpus - Get / set the number of CPUs, which have a tracing
-buffer representing it. Note, the buffer may be empty.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-int *tep_get_cpus*(struct tep_handle pass:[*]_tep_);
-void *tep_set_cpus*(struct tep_handle pass:[*]_tep_, int _cpus_);
---
-
-DESCRIPTION
------------
-The _tep_get_cpus()_ function gets the number of CPUs, which have a tracing
-buffer representing it. The _tep_ argument is trace event parser context.
-
-The _tep_set_cpus()_ function sets the number of CPUs, which have a tracing
-buffer representing it. The _tep_ argument is trace event parser context.
-The _cpu_ argument is the number of CPUs with tracing data.
-
-RETURN VALUE
-------------
-The _tep_get_cpus()_ functions returns the number of CPUs, which have tracing
-data recorded.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
- tep_set_cpus(tep, 5);
-...
- printf("We have tracing data for %d CPUs", tep_get_cpus(tep));
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_read_number - Reads a number from raw data.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-unsigned long long *tep_read_number*(struct tep_handle pass:[*]_tep_, const void pass:[*]_ptr_, int _size_);
---
-
-DESCRIPTION
------------
-The _tep_read_number()_ function reads an integer from raw data, taking into
-account the endianness of the raw data and the current host. The _tep_ argument
-is the trace event parser context. The _ptr_ is a pointer to the raw data, where
-the integer is, and the _size_ is the size of the integer.
-
-RETURN VALUE
-------------
-The _tep_read_number()_ function returns the integer in the byte order of
-the current host. In case of an error, 0 is returned.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
-void process_record(struct tep_record *record)
-{
- int offset = 24;
- int data = tep_read_number(tep, record->data + offset, 4);
-
- /* Read the 4 bytes at the offset 24 of data as an integer */
-}
-...
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_find_event,tep_find_event_by_name,tep_find_event_by_record -
-Find events by given key.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-struct tep_event pass:[*]*tep_find_event*(struct tep_handle pass:[*]_tep_, int _id_);
-struct tep_event pass:[*]*tep_find_event_by_name*(struct tep_handle pass:[*]_tep_, const char pass:[*]_sys_, const char pass:[*]_name_);
-struct tep_event pass:[*]*tep_find_event_by_record*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_record_);
---
-
-DESCRIPTION
------------
-This set of functions can be used to search for an event, based on a given
-criteria. All functions require a pointer to a _tep_, trace event parser
-context.
-
-The _tep_find_event()_ function searches for an event by given event _id_. The
-event ID is assigned dynamically and can be viewed in event's format file,
-"ID" field.
-
-The tep_find_event_by_name()_ function searches for an event by given
-event _name_, under the system _sys_. If the _sys_ is NULL (not specified),
-the first event with _name_ is returned.
-
-The tep_find_event_by_record()_ function searches for an event from a given
-_record_.
-
-RETURN VALUE
-------------
-All these functions return a pointer to the found event, or NULL if there is no
-such event.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
-struct tep_event *event;
-
-event = tep_find_event(tep, 1857);
-if (event == NULL) {
- /* There is no event with ID 1857 */
-}
-
-event = tep_find_event_by_name(tep, "kvm", "kvm_exit");
-if (event == NULL) {
- /* There is no kvm_exit event, from kvm system */
-}
-
-void event_from_record(struct tep_record *record)
-{
- struct tep_event *event = tep_find_event_by_record(tep, record);
- if (event == NULL) {
- /* There is no event from given record */
- }
-}
-...
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_get_event, tep_get_first_event, tep_get_events_count - Access events.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-struct tep_event pass:[*]*tep_get_event*(struct tep_handle pass:[*]_tep_, int _index_);
-struct tep_event pass:[*]*tep_get_first_event*(struct tep_handle pass:[*]_tep_);
-int *tep_get_events_count*(struct tep_handle pass:[*]_tep_);
---
-
-DESCRIPTION
------------
-The _tep_get_event()_ function returns a pointer to event at the given _index_.
-The _tep_ argument is trace event parser context, the _index_ is the index of
-the requested event.
-
-The _tep_get_first_event()_ function returns a pointer to the first event.
-As events are stored in an array, this function returns the pointer to the
-beginning of the array. The _tep_ argument is trace event parser context.
-
-The _tep_get_events_count()_ function returns the number of the events
-in the array. The _tep_ argument is trace event parser context.
-
-RETURN VALUE
-------------
-The _tep_get_event()_ returns a pointer to the event located at _index_.
-NULL is returned in case of error, in case there are no events or _index_ is
-out of range.
-
-The _tep_get_first_event()_ returns a pointer to the first event. NULL is
-returned in case of error, or in case there are no events.
-
-The _tep_get_events_count()_ returns the number of the events. 0 is
-returned in case of error, or in case there are no events.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
-int i,count = tep_get_events_count(tep);
-struct tep_event *event, *events = tep_get_first_event(tep);
-
-if (events == NULL) {
- /* There are no events */
-} else {
- for (i = 0; i < count; i++) {
- event = (events+i);
- /* process events[i] */
- }
-
- /* Get the last event */
- event = tep_get_event(tep, count-1);
-}
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_list_events, tep_list_events_copy -
-Get list of events, sorted by given criteria.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-enum *tep_event_sort_type* {
- _TEP_EVENT_SORT_ID_,
- _TEP_EVENT_SORT_NAME_,
- _TEP_EVENT_SORT_SYSTEM_,
-};
-
-struct tep_event pass:[*]pass:[*]*tep_list_events*(struct tep_handle pass:[*]_tep_, enum tep_event_sort_type _sort_type_);
-struct tep_event pass:[*]pass:[*]*tep_list_events_copy*(struct tep_handle pass:[*]_tep_, enum tep_event_sort_type _sort_type_);
---
-
-DESCRIPTION
------------
-The _tep_list_events()_ function returns an array of pointers to the events,
-sorted by the _sort_type_ criteria. The last element of the array is NULL.
-The returned memory must not be freed, it is managed by the library.
-The function is not thread safe. The _tep_ argument is trace event parser
-context. The _sort_type_ argument is the required sort criteria:
-[verse]
---
- _TEP_EVENT_SORT_ID_ - sort by the event ID.
- _TEP_EVENT_SORT_NAME_ - sort by the event (name, system, id) triplet.
- _TEP_EVENT_SORT_SYSTEM_ - sort by the event (system, name, id) triplet.
---
-
-The _tep_list_events_copy()_ is a thread safe version of _tep_list_events()_.
-It has the same behavior, but the returned array is allocated internally and
-must be freed by the caller. Note that the content of the array must not be
-freed (see the EXAMPLE below).
-
-RETURN VALUE
-------------
-The _tep_list_events()_ function returns an array of pointers to events.
-In case of an error, NULL is returned. The returned array must not be freed,
-it is managed by the library.
-
-The _tep_list_events_copy()_ function returns an array of pointers to events.
-In case of an error, NULL is returned. The returned array must be freed by
-the caller.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
-int i;
-struct tep_event_format **events;
-
-i=0;
-events = tep_list_events(tep, TEP_EVENT_SORT_ID);
-if (events == NULL) {
- /* Failed to get the events, sorted by ID */
-} else {
- while(events[i]) {
- /* walk through the list of the events, sorted by ID */
- i++;
- }
-}
-
-i=0;
-events = tep_list_events_copy(tep, TEP_EVENT_SORT_NAME);
-if (events == NULL) {
- /* Failed to get the events, sorted by name */
-} else {
- while(events[i]) {
- /* walk through the list of the events, sorted by name */
- i++;
- }
- free(events);
-}
-
-...
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_print_event - Writes event information into a trace sequence.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-*#include <trace-seq.h>*
-
-void *tep_print_event*(struct tep_handle pass:[*]_tep_, struct trace_seqpass:[*]_s_, struct tep_record pass:[*]_record_, const char pass:[*]_fmt_, _..._)
---
-
-DESCRIPTION
------------
-
-The _tep_print_event()_ function parses the event information of the given
-_record_ and writes it into the trace sequence _s_, according to the format
-string _fmt_. The desired information is specified after the format string.
-The _fmt_ is printf-like format string, following arguments are supported:
-[verse]
---
- TEP_PRINT_PID, "%d" - PID of the event.
- TEP_PRINT_CPU, "%d" - Event CPU.
- TEP_PRINT_COMM, "%s" - Event command string.
- TEP_PRINT_NAME, "%s" - Event name.
- TEP_PRINT_LATENCY, "%s" - Latency of the event. It prints 4 or more
- fields - interrupt state, scheduling state,
- current context, and preemption count.
- Field 1 is the interrupt enabled state:
- d : Interrupts are disabled
- . : Interrupts are enabled
- X : The architecture does not support this
- information
- Field 2 is the "need resched" state.
- N : The task is set to call the scheduler when
- possible, as another higher priority task
- may need to be scheduled in.
- . : The task is not set to call the scheduler.
- Field 3 is the context state.
- . : Normal context
- s : Soft interrupt context
- h : Hard interrupt context
- H : Hard interrupt context which triggered
- during soft interrupt context.
- z : NMI context
- Z : NMI context which triggered during hard
- interrupt context
- Field 4 is the preemption count.
- . : The preempt count is zero.
- On preemptible kernels (where the task can be scheduled
- out in arbitrary locations while in kernel context), the
- preempt count, when non zero, will prevent the kernel
- from scheduling out the current task. The preempt count
- number is displayed when it is not zero.
- Depending on the kernel, it may show other fields
- (lock depth, or migration disabled, which are unique to
- specialized kernels).
- TEP_PRINT_TIME, %d - event time stamp. A divisor and precision can be
- specified as part of this format string:
- "%precision.divisord". Example:
- "%3.1000d" - divide the time by 1000 and print the first
- 3 digits before the dot. Thus, the time stamp
- "123456000" will be printed as "123.456"
- TEP_PRINT_INFO, "%s" - event information.
- TEP_PRINT_INFO_RAW, "%s" - event information, in raw format.
-
---
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-#include <trace-seq.h>
-...
-struct trace_seq seq;
-trace_seq_init(&seq);
-struct tep_handle *tep = tep_alloc();
-...
-void print_my_event(struct tep_record *record)
-{
- trace_seq_reset(&seq);
- tep_print_event(tep, s, record, "%16s-%-5d [%03d] %s %6.1000d %s %s",
- TEP_PRINT_COMM, TEP_PRINT_PID, TEP_PRINT_CPU,
- TEP_PRINT_LATENCY, TEP_PRINT_TIME, TEP_PRINT_NAME,
- TEP_PRINT_INFO);
-}
-...
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*trace-seq.h*
- Header file to include in order to have access to trace sequences related APIs.
- Trace sequences are used to allow a function to call several other functions
- to create a string of data to use.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_find_common_field, tep_find_field, tep_find_any_field -
-Search for a field in an event.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-struct tep_format_field pass:[*]*tep_find_common_field*(struct tep_event pass:[*]_event_, const char pass:[*]_name_);
-struct tep_format_field pass:[*]*tep_find_field*(struct tep_event_ormat pass:[*]_event_, const char pass:[*]_name_);
-struct tep_format_field pass:[*]*tep_find_any_field*(struct tep_event pass:[*]_event_, const char pass:[*]_name_);
---
-
-DESCRIPTION
------------
-These functions search for a field with given name in an event. The field
-returned can be used to find the field content from within a data record.
-
-The _tep_find_common_field()_ function searches for a common field with _name_
-in the _event_.
-
-The _tep_find_field()_ function searches for an event specific field with
-_name_ in the _event_.
-
-The _tep_find_any_field()_ function searches for any field with _name_ in the
-_event_.
-
-RETURN VALUE
-------------
-The _tep_find_common_field(), _tep_find_field()_ and _tep_find_any_field()_
-functions return a pointer to the found field, or NULL in case there is no field
-with the requested name.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-void get_htimer_info(struct tep_handle *tep, struct tep_record *record)
-{
- struct tep_format_field *field;
- struct tep_event *event;
- long long softexpires;
- int mode;
- int pid;
-
- event = tep_find_event_by_name(tep, "timer", "hrtimer_start");
-
- field = tep_find_common_field(event, "common_pid");
- if (field == NULL) {
- /* Cannot find "common_pid" field in the event */
- } else {
- /* Get pid from the data record */
- pid = tep_read_number(tep, record->data + field->offset,
- field->size);
- }
-
- field = tep_find_field(event, "softexpires");
- if (field == NULL) {
- /* Cannot find "softexpires" event specific field in the event */
- } else {
- /* Get softexpires parameter from the data record */
- softexpires = tep_read_number(tep, record->data + field->offset,
- field->size);
- }
-
- field = tep_find_any_field(event, "mode");
- if (field == NULL) {
- /* Cannot find "mode" field in the event */
- } else
- {
- /* Get mode parameter from the data record */
- mode = tep_read_number(tep, record->data + field->offset,
- field->size);
- }
-}
-...
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_get_any_field_val, tep_get_common_field_val, tep_get_field_val,
-tep_get_field_raw - Get value of a field.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-*#include <trace-seq.h>*
-
-int *tep_get_any_field_val*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, unsigned long long pass:[*]_val_, int _err_);
-int *tep_get_common_field_val*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, unsigned long long pass:[*]_val_, int _err_);
-int *tep_get_field_val*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, unsigned long long pass:[*]_val_, int _err_);
-void pass:[*]*tep_get_field_raw*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, int pass:[*]_len_, int _err_);
---
-
-DESCRIPTION
------------
-These functions can be used to find a field and retrieve its value.
-
-The _tep_get_any_field_val()_ function searches in the _record_ for a field
-with _name_, part of the _event_. If the field is found, its value is stored in
-_val_. If there is an error and _err_ is not zero, then an error string is
-written into _s_.
-
-The _tep_get_common_field_val()_ function does the same as
-_tep_get_any_field_val()_, but searches only in the common fields. This works
-for any event as all events include the common fields.
-
-The _tep_get_field_val()_ function does the same as _tep_get_any_field_val()_,
-but searches only in the event specific fields.
-
-The _tep_get_field_raw()_ function searches in the _record_ for a field with
-_name_, part of the _event_. If the field is found, a pointer to where the field
-exists in the record's raw data is returned. The size of the data is stored in
-_len_. If there is an error and _err_ is not zero, then an error string is
-written into _s_.
-
-RETURN VALUE
-------------
-The _tep_get_any_field_val()_, _tep_get_common_field_val()_ and
-_tep_get_field_val()_ functions return 0 on success, or -1 in case of an error.
-
-The _tep_get_field_raw()_ function returns a pointer to field's raw data, and
-places the length of this data in _len_. In case of an error NULL is returned.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-#include <trace-seq.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
-struct tep_event *event = tep_find_event_by_name(tep, "kvm", "kvm_exit");
-...
-void process_record(struct tep_record *record)
-{
- int len;
- char *comm;
- struct tep_event_format *event;
- unsigned long long val;
-
- event = tep_find_event_by_record(pevent, record);
- if (event != NULL) {
- if (tep_get_common_field_val(NULL, event, "common_type",
- record, &val, 0) == 0) {
- /* Got the value of common type field */
- }
- if (tep_get_field_val(NULL, event, "pid", record, &val, 0) == 0) {
- /* Got the value of pid specific field */
- }
- comm = tep_get_field_raw(NULL, event, "comm", record, &len, 0);
- if (comm != NULL) {
- /* Got a pointer to the comm event specific field */
- }
- }
-}
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*trace-seq.h*
- Header file to include in order to have access to trace sequences
- related APIs. Trace sequences are used to allow a function to call
- several other functions to create a string of data to use.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_print_field, tep_print_fields, tep_print_num_field, tep_print_func_field -
-Print the field content.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-*#include <trace-seq.h>*
-
-void *tep_print_field*(struct trace_seq pass:[*]_s_, void pass:[*]_data_, struct tep_format_field pass:[*]_field_);
-void *tep_print_fields*(struct trace_seq pass:[*]_s_, void pass:[*]_data_, int _size_, struct tep_event pass:[*]_event_);
-int *tep_print_num_field*(struct trace_seq pass:[*]_s_, const char pass:[*]_fmt_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, int _err_);
-int *tep_print_func_field*(struct trace_seq pass:[*]_s_, const char pass:[*]_fmt_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, int _err_);
---
-
-DESCRIPTION
------------
-These functions print recorded field's data, according to the field's type.
-
-The _tep_print_field()_ function extracts from the recorded raw _data_ value of
-the _field_ and prints it into _s_, according to the field type.
-
-The _tep_print_fields()_ prints each field name followed by the record's field
-value according to the field's type:
-[verse]
---
-"field1_name=field1_value field2_name=field2_value ..."
---
-It iterates all fields of the _event_, and calls _tep_print_field()_ for each of
-them.
-
-The _tep_print_num_field()_ function prints a numeric field with given format
-string. A search is performed in the _event_ for a field with _name_. If such
-field is found, its value is extracted from the _record_ and is printed in the
-_s_, according to the given format string _fmt_. If the argument _err_ is
-non-zero, and an error occures - it is printed in the _s_.
-
-The _tep_print_func_field()_ function prints a function field with given format
-string. A search is performed in the _event_ for a field with _name_. If such
-field is found, its value is extracted from the _record_. The value is assumed
-to be a function address, and a search is perform to find the name of this
-function. The function name (if found) and its address are printed in the _s_,
-according to the given format string _fmt_. If the argument _err_ is non-zero,
-and an error occures - it is printed in _s_.
-
-RETURN VALUE
-------------
-The _tep_print_num_field()_ and _tep_print_func_field()_ functions return 1
-on success, -1 in case of an error or 0 if the print buffer _s_ is full.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-#include <trace-seq.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
-struct trace_seq seq;
-trace_seq_init(&seq);
-struct tep_event *event = tep_find_event_by_name(tep, "timer", "hrtimer_start");
-...
-void process_record(struct tep_record *record)
-{
- struct tep_format_field *field_pid = tep_find_common_field(event, "common_pid");
-
- trace_seq_reset(&seq);
-
- /* Print the value of "common_pid" */
- tep_print_field(&seq, record->data, field_pid);
-
- /* Print all fields of the "hrtimer_start" event */
- tep_print_fields(&seq, record->data, record->size, event);
-
- /* Print the value of "expires" field with custom format string */
- tep_print_num_field(&seq, " timer expires in %llu ", event, "expires", record, 0);
-
- /* Print the address and the name of "function" field with custom format string */
- tep_print_func_field(&seq, " timer function is %s ", event, "function", record, 0);
- }
- ...
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*trace-seq.h*
- Header file to include in order to have access to trace sequences related APIs.
- Trace sequences are used to allow a function to call several other functions
- to create a string of data to use.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_read_number_field - Reads a number from raw data.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-int *tep_read_number_field*(struct tep_format_field pass:[*]_field_, const void pass:[*]_data_, unsigned long long pass:[*]_value_);
---
-
-DESCRIPTION
------------
-The _tep_read_number_field()_ function reads the value of the _field_ from the
-raw _data_ and stores it in the _value_. The function sets the _value_ according
-to the endianness of the raw data and the current machine and stores it in
-_value_.
-
-RETURN VALUE
-------------
-The _tep_read_number_field()_ function retunrs 0 in case of success, or -1 in
-case of an error.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
-struct tep_event *event = tep_find_event_by_name(tep, "timer", "hrtimer_start");
-...
-void process_record(struct tep_record *record)
-{
- unsigned long long pid;
- struct tep_format_field *field_pid = tep_find_common_field(event, "common_pid");
-
- if (tep_read_number_field(field_pid, record->data, &pid) != 0) {
- /* Failed to get "common_pid" value */
- }
-}
-...
---
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_event_common_fields, tep_event_fields - Get a list of fields for an event.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-struct tep_format_field pass:[*]pass:[*]*tep_event_common_fields*(struct tep_event pass:[*]_event_);
-struct tep_format_field pass:[*]pass:[*]*tep_event_fields*(struct tep_event pass:[*]_event_);
---
-
-DESCRIPTION
------------
-The _tep_event_common_fields()_ function returns an array of pointers to common
-fields for the _event_. The array is allocated in the function and must be freed
-by free(). The last element of the array is NULL.
-
-The _tep_event_fields()_ function returns an array of pointers to event specific
-fields for the _event_. The array is allocated in the function and must be freed
-by free(). The last element of the array is NULL.
-
-RETURN VALUE
-------------
-Both _tep_event_common_fields()_ and _tep_event_fields()_ functions return
-an array of pointers to tep_format_field structures in case of success, or
-NULL in case of an error.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
-int i;
-struct tep_format_field **fields;
-struct tep_event *event = tep_find_event_by_name(tep, "kvm", "kvm_exit");
-if (event != NULL) {
- fields = tep_event_common_fields(event);
- if (fields != NULL) {
- i = 0;
- while (fields[i]) {
- /*
- walk through the list of the common fields
- of the kvm_exit event
- */
- i++;
- }
- free(fields);
- }
- fields = tep_event_fields(event);
- if (fields != NULL) {
- i = 0;
- while (fields[i]) {
- /*
- walk through the list of the event specific
- fields of the kvm_exit event
- */
- i++;
- }
- free(fields);
- }
-}
-...
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_is_file_bigendian, tep_set_file_bigendian - Get / set the endianness of the
-raw data being accessed by the tep handler.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-enum *tep_endian* {
- TEP_LITTLE_ENDIAN = 0,
- TEP_BIG_ENDIAN
-};
-
-bool *tep_is_file_bigendian*(struct tep_handle pass:[*]_tep_);
-void *tep_set_file_bigendian*(struct tep_handle pass:[*]_tep_, enum tep_endian _endian_);
-
---
-DESCRIPTION
------------
-The _tep_is_file_bigendian()_ function gets the endianness of the raw data,
-being accessed by the tep handler. The _tep_ argument is trace event parser
-context.
-
-The _tep_set_file_bigendian()_ function sets the endianness of raw data being
-accessed by the tep handler. The _tep_ argument is trace event parser context.
-[verse]
---
-The _endian_ argument is the endianness:
- _TEP_LITTLE_ENDIAN_ - the raw data is in little endian format,
- _TEP_BIG_ENDIAN_ - the raw data is in big endian format.
---
-RETURN VALUE
-------------
-The _tep_is_file_bigendian()_ function returns true if the data is in bigendian
-format, false otherwise.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
- tep_set_file_bigendian(tep, TEP_LITTLE_ENDIAN);
-...
- if (tep_is_file_bigendian(tep)) {
- /* The raw data is in big endian */
- } else {
- /* The raw data is in little endian */
- }
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_filter_alloc, tep_filter_free, tep_filter_reset, tep_filter_make_string,
-tep_filter_copy, tep_filter_compare, tep_filter_match, tep_event_filtered,
-tep_filter_remove_event, tep_filter_strerror, tep_filter_add_filter_str -
-Event filter related APIs.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-struct tep_event_filter pass:[*]*tep_filter_alloc*(struct tep_handle pass:[*]_tep_);
-void *tep_filter_free*(struct tep_event_filter pass:[*]_filter_);
-void *tep_filter_reset*(struct tep_event_filter pass:[*]_filter_);
-enum tep_errno *tep_filter_add_filter_str*(struct tep_event_filter pass:[*]_filter_, const char pass:[*]_filter_str_);
-int *tep_event_filtered*(struct tep_event_filter pass:[*]_filter_, int _event_id_);
-int *tep_filter_remove_event*(struct tep_event_filter pass:[*]_filter_, int _event_id_);
-enum tep_errno *tep_filter_match*(struct tep_event_filter pass:[*]_filter_, struct tep_record pass:[*]_record_);
-int *tep_filter_copy*(struct tep_event_filter pass:[*]_dest_, struct tep_event_filter pass:[*]_source_);
-int *tep_filter_compare*(struct tep_event_filter pass:[*]_filter1_, struct tep_event_filter pass:[*]_filter2_);
-char pass:[*]*tep_filter_make_string*(struct tep_event_filter pass:[*]_filter_, int _event_id_);
-int *tep_filter_strerror*(struct tep_event_filter pass:[*]_filter_, enum tep_errno _err_, char pass:[*]buf, size_t _buflen_);
---
-
-DESCRIPTION
------------
-Filters can be attached to traced events. They can be used to filter out various
-events when outputting them. Each event can be filtered based on its parameters,
-described in the event's format file. This set of functions can be used to
-create, delete, modify and attach event filters.
-
-The _tep_filter_alloc()_ function creates a new event filter. The _tep_ argument
-is the trace event parser context.
-
-The _tep_filter_free()_ function frees an event filter and all resources that it
-had used.
-
-The _tep_filter_reset()_ function removes all rules from an event filter and
-resets it.
-
-The _tep_filter_add_filter_str()_ function adds a new rule to the _filter_. The
-_filter_str_ argument is the filter string, that contains the rule.
-
-The _tep_event_filtered()_ function checks if the event with _event_id_ has
-_filter_.
-
-The _tep_filter_remove_event()_ function removes a _filter_ for an event with
-_event_id_.
-
-The _tep_filter_match()_ function tests if a _record_ matches given _filter_.
-
-The _tep_filter_copy()_ function copies a _source_ filter into a _dest_ filter.
-
-The _tep_filter_compare()_ function compares two filers - _filter1_ and _filter2_.
-
-The _tep_filter_make_string()_ function constructs a string, displaying
-the _filter_ contents for given _event_id_.
-
-The _tep_filter_strerror()_ function copies the _filter_ error buffer into the
-given _buf_ with the size _buflen_. If the error buffer is empty, in the _buf_
-is copied a string, describing the error _err_.
-
-RETURN VALUE
-------------
-The _tep_filter_alloc()_ function returns a pointer to the newly created event
-filter, or NULL in case of an error.
-
-The _tep_filter_add_filter_str()_ function returns 0 if the rule was
-successfully added or a negative error code. Use _tep_filter_strerror()_ to see
-actual error message in case of an error.
-
-The _tep_event_filtered()_ function returns 1 if the filter is found for given
-event, or 0 otherwise.
-
-The _tep_filter_remove_event()_ function returns 1 if the vent was removed, or
-0 if the event was not found.
-
-The _tep_filter_match()_ function returns _tep_errno_, according to the result:
-[verse]
---
-_pass:[TEP_ERRNO__FILTER_MATCH]_ - filter found for event, the record matches.
-_pass:[TEP_ERRNO__FILTER_MISS]_ - filter found for event, the record does not match.
-_pass:[TEP_ERRNO__FILTER_NOT_FOUND]_ - no filter found for record's event.
-_pass:[TEP_ERRNO__NO_FILTER]_ - no rules in the filter.
---
-or any other _tep_errno_, if an error occurred during the test.
-
-The _tep_filter_copy()_ function returns 0 on success or -1 if not all rules
- were copied.
-
-The _tep_filter_compare()_ function returns 1 if the two filters hold the same
-content, or 0 if they do not.
-
-The _tep_filter_make_string()_ function returns a string, which must be freed
-with free(), or NULL in case of an error.
-
-The _tep_filter_strerror()_ function returns 0 if message was filled
-successfully, or -1 in case of an error.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
-char errstr[200];
-int ret;
-
-struct tep_event_filter *filter = tep_filter_alloc(tep);
-struct tep_event_filter *filter1 = tep_filter_alloc(tep);
-ret = tep_filter_add_filter_str(filter, "sched/sched_wakeup:target_cpu==1");
-if(ret < 0) {
- tep_filter_strerror(filter, ret, errstr, sizeof(errstr));
- /* Failed to add a new rule to the filter, the error string is in errstr */
-}
-if (tep_filter_copy(filter1, filter) != 0) {
- /* Failed to copy filter in filter1 */
-}
-...
-if (tep_filter_compare(filter, filter1) != 1) {
- /* Both filters are different */
-}
-...
-void process_record(struct tep_handle *tep, struct tep_record *record)
-{
- struct tep_event *event;
- char *fstring;
-
- event = tep_find_event_by_record(tep, record);
-
- if (tep_event_filtered(filter, event->id) == 1) {
- /* The event has filter */
- fstring = tep_filter_make_string(filter, event->id);
- if (fstring != NULL) {
- /* The filter for the event is in fstring */
- free(fstring);
- }
- }
-
- switch (tep_filter_match(filter, record)) {
- case TEP_ERRNO__FILTER_MATCH:
- /* The filter matches the record */
- break;
- case TEP_ERRNO__FILTER_MISS:
- /* The filter does not match the record */
- break;
- case TEP_ERRNO__FILTER_NOT_FOUND:
- /* No filter found for record's event */
- break;
- case TEP_ERRNO__NO_FILTER:
- /* There are no rules in the filter */
- break
- default:
- /* An error occurred during the test */
- break;
- }
-
- if (tep_filter_remove_event(filter, event->id) == 1) {
- /* The event was removed from the filter */
- }
-}
-
-...
-tep_filter_reset(filter);
-...
-tep_filter_free(filter);
-tep_filter_free(filter1);
-...
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_find_function, tep_find_function_address, tep_set_function_resolver,
-tep_reset_function_resolver, tep_register_function, tep_register_print_string -
-function related tep APIs
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-typedef char pass:[*](*tep_func_resolver_t*)(void pass:[*]_priv_, unsigned long long pass:[*]_addrp_, char pass:[**]_modp_);
-int *tep_set_function_resolver*(struct tep_handle pass:[*]_tep_, tep_func_resolver_t pass:[*]_func_, void pass:[*]_priv_);
-void *tep_reset_function_resolver*(struct tep_handle pass:[*]_tep_);
-const char pass:[*]*tep_find_function*(struct tep_handle pass:[*]_tep_, unsigned long long _addr_);
-unsigned long long *tep_find_function_address*(struct tep_handle pass:[*]_tep_, unsigned long long _addr_);
-int *tep_register_function*(struct tep_handle pass:[*]_tep_, char pass:[*]_name_, unsigned long long _addr_, char pass:[*]_mod_);
-int *tep_register_print_string*(struct tep_handle pass:[*]_tep_, const char pass:[*]_fmt_, unsigned long long _addr_);
---
-
-DESCRIPTION
------------
-Some tools may have already a way to resolve the kernel functions. These APIs
-allow them to keep using it instead of duplicating all the entries inside.
-
-The _tep_func_resolver_t_ type is the prototype of the alternative kernel
-functions resolver. This function receives a pointer to its custom context
-(set with the _tep_set_function_resolver()_ call ) and the address of a kernel
-function, which has to be resolved. In case of success, it should return
-the name of the function and its module (if any) in _modp_.
-
-The _tep_set_function_resolver()_ function registers _func_ as an alternative
-kernel functions resolver. The _tep_ argument is trace event parser context.
-The _priv_ argument is a custom context of the _func_ function. The function
-resolver is used by the APIs _tep_find_function()_,
-_tep_find_function_address()_, and _tep_print_func_field()_ to resolve
-a function address to a function name.
-
-The _tep_reset_function_resolver()_ function resets the kernel functions
-resolver to the default function. The _tep_ argument is trace event parser
-context.
-
-
-These APIs can be used to find function name and start address, by given
-address. The given address does not have to be exact, it will select
-the function that would contain it.
-
-The _tep_find_function()_ function returns the function name, which contains the
-given address _addr_. The _tep_ argument is the trace event parser context.
-
-The _tep_find_function_address()_ function returns the function start address,
-by given address _addr_. The _addr_ does not have to be exact, it will select
-the function that would contain it. The _tep_ argument is the trace event
-parser context.
-
-The _tep_register_function()_ function registers a function name mapped to an
-address and (optional) module. This mapping is used in case the function tracer
-or events have "%pS" parameter in its format string. It is common to pass in
-the kallsyms function names with their corresponding addresses with this
-function. The _tep_ argument is the trace event parser context. The _name_ is
-the name of the function, the string is copied internally. The _addr_ is the
-start address of the function. The _mod_ is the kernel module the function may
-be in (NULL for none).
-
-The _tep_register_print_string()_ function registers a string by the address
-it was stored in the kernel. Some strings internal to the kernel with static
-address are passed to certain events. The "%s" in the event's format field
-which has an address needs to know what string would be at that address. The
-tep_register_print_string() supplies the parsing with the mapping between kernel
-addresses and those strings. The _tep_ argument is the trace event parser
-context. The _fmt_ is the string to register, it is copied internally.
-The _addr_ is the address the string was located at.
-
-
-RETURN VALUE
-------------
-The _tep_set_function_resolver()_ function returns 0 in case of success, or -1
-in case of an error.
-
-The _tep_find_function()_ function returns the function name, or NULL in case
-it cannot be found.
-
-The _tep_find_function_address()_ function returns the function start address,
-or 0 in case it cannot be found.
-
-The _tep_register_function()_ function returns 0 in case of success. In case of
-an error -1 is returned, and errno is set to the appropriate error number.
-
-The _tep_register_print_string()_ function returns 0 in case of success. In case
-of an error -1 is returned, and errno is set to the appropriate error number.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
-char *my_resolve_kernel_addr(void *context,
- unsigned long long *addrp, char **modp)
-{
- struct db *function_database = context;
- struct symbol *sym = sql_lookup(function_database, *addrp);
-
- if (!sym)
- return NULL;
-
- *modp = sym->module_name;
- return sym->name;
-}
-
-void show_function( unsigned long long addr)
-{
- unsigned long long fstart;
- const char *fname;
-
- if (tep_set_function_resolver(tep, my_resolve_kernel_addr,
- function_database) != 0) {
- /* failed to register my_resolve_kernel_addr */
- }
-
- /* These APIs use my_resolve_kernel_addr() to resolve the addr */
- fname = tep_find_function(tep, addr);
- fstart = tep_find_function_address(tep, addr);
-
- /*
- addr is in function named fname, starting at fstart address,
- at offset (addr - fstart)
- */
-
- tep_reset_function_resolver(tep);
-
-}
-...
- if (tep_register_function(tep, "kvm_exit",
- (unsigned long long) 0x12345678, "kvm") != 0) {
- /* Failed to register kvm_exit address mapping */
- }
-...
- if (tep_register_print_string(tep, "print string",
- (unsigned long long) 0x87654321, NULL) != 0) {
- /* Failed to register "print string" address mapping */
- }
-...
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_find_function,tep_find_function_address - Find function name / start address.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-const char pass:[*]*tep_find_function*(struct tep_handle pass:[*]_tep_, unsigned long long _addr_);
-unsigned long long *tep_find_function_address*(struct tep_handle pass:[*]_tep_, unsigned long long _addr_);
---
-
-DESCRIPTION
------------
-These functions can be used to find function name and start address, by given
-address. The given address does not have to be exact, it will select the function
-that would contain it.
-
-The _tep_find_function()_ function returns the function name, which contains the
-given address _addr_. The _tep_ argument is the trace event parser context.
-
-The _tep_find_function_address()_ function returns the function start address,
-by given address _addr_. The _addr_ does not have to be exact, it will select the
-function that would contain it. The _tep_ argument is the trace event parser context.
-
-RETURN VALUE
-------------
-The _tep_find_function()_ function returns the function name, or NULL in case
-it cannot be found.
-
-The _tep_find_function_address()_ function returns the function start address,
-or 0 in case it cannot be found.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
-void show_function( unsigned long long addr)
-{
- const char *fname = tep_find_function(tep, addr);
- unsigned long long fstart = tep_find_function_address(tep, addr);
-
- /* addr is in function named fname, starting at fstart address, at offset (addr - fstart) */
-}
-...
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_alloc, tep_free,tep_ref, tep_unref,tep_get_ref - Create, destroy, manage
-references of trace event parser context.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-struct tep_handle pass:[*]*tep_alloc*(void);
-void *tep_free*(struct tep_handle pass:[*]_tep_);
-void *tep_ref*(struct tep_handle pass:[*]_tep_);
-void *tep_unref*(struct tep_handle pass:[*]_tep_);
-int *tep_get_ref*(struct tep_handle pass:[*]_tep_);
---
-
-DESCRIPTION
------------
-These are the main functions to create and destroy tep_handle - the main
-structure, representing the trace event parser context. This context is used as
-the input parameter of most library APIs.
-
-The _tep_alloc()_ function allocates and initializes the tep context.
-
-The _tep_free()_ function will decrement the reference of the _tep_ handler.
-When there is no more references, then it will free the handler, as well
-as clean up all its resources that it had used. The argument _tep_ is
-the pointer to the trace event parser context.
-
-The _tep_ref()_ function adds a reference to the _tep_ handler.
-
-The _tep_unref()_ function removes a reference from the _tep_ handler. When
-the last reference is removed, the _tep_ is destroyed, and all resources that
-it had used are cleaned up.
-
-The _tep_ref_get()_ functions gets the current references of the _tep_ handler.
-
-RETURN VALUE
-------------
-_tep_alloc()_ returns a pointer to a newly created tep_handle structure.
-NULL is returned in case there is not enough free memory to allocate it.
-
-_tep_ref_get()_ returns the current references of _tep_.
-If _tep_ is NULL, 0 is returned.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-
-...
-struct tep_handle *tep = tep_alloc();
-...
-int ref = tep_get_ref(tep);
-tep_ref(tep);
-if ( (ref+1) != tep_get_ref(tep)) {
- /* Something wrong happened, the counter is not incremented by 1 */
-}
-tep_unref(tep);
-...
-tep_free(tep);
-...
---
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_get_header_page_size, tep_get_header_timestamp_size, tep_is_old_format -
-Get the data stored in the header page, in kernel context.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-int *tep_get_header_page_size*(struct tep_handle pass:[*]_tep_);
-int *tep_get_header_timestamp_size*(struct tep_handle pass:[*]_tep_);
-bool *tep_is_old_format*(struct tep_handle pass:[*]_tep_);
---
-DESCRIPTION
------------
-These functions retrieve information from kernel context, stored in tracefs
-events/header_page. Old kernels do not have header page info, so default values
-from user space context are used.
-
-The _tep_get_header_page_size()_ function returns the size of a long integer,
-in kernel context. The _tep_ argument is trace event parser context.
-This information is retrieved from tracefs events/header_page, "commit" field.
-
-The _tep_get_header_timestamp_size()_ function returns the size of timestamps,
-in kernel context. The _tep_ argument is trace event parser context. This
-information is retrieved from tracefs events/header_page, "timestamp" field.
-
-The _tep_is_old_format()_ function returns true if the kernel predates
-the addition of events/header_page, otherwise it returns false.
-
-RETURN VALUE
-------------
-The _tep_get_header_page_size()_ function returns the size of a long integer,
-in bytes.
-
-The _tep_get_header_timestamp_size()_ function returns the size of timestamps,
-in bytes.
-
-The _tep_is_old_format()_ function returns true, if an old kernel is used to
-generate the tracing data, which has no event/header_page. If the kernel is new,
-or _tep_ is NULL, false is returned.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
- int longsize;
- int timesize;
- bool old;
-
- longsize = tep_get_header_page_size(tep);
- timesize = tep_get_header_timestamp_size(tep);
- old = tep_is_old_format(tep);
-
- printf ("%s kernel is used to generate the tracing data.\n",
- old?"Old":"New");
- printf("The size of a long integer is %d bytes.\n", longsize);
- printf("The timestamps size is %d bytes.\n", timesize);
-...
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_is_bigendian, tep_is_local_bigendian, tep_set_local_bigendian - Get / set
-the endianness of the local machine.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-enum *tep_endian* {
- TEP_LITTLE_ENDIAN = 0,
- TEP_BIG_ENDIAN
-};
-
-int *tep_is_bigendian*(void);
-bool *tep_is_local_bigendian*(struct tep_handle pass:[*]_tep_);
-void *tep_set_local_bigendian*(struct tep_handle pass:[*]_tep_, enum tep_endian _endian_);
---
-
-DESCRIPTION
------------
-
-The _tep_is_bigendian()_ gets the endianness of the machine, executing
-the function.
-
-The _tep_is_local_bigendian()_ function gets the endianness of the local
-machine, saved in the _tep_ handler. The _tep_ argument is the trace event
-parser context. This API is a bit faster than _tep_is_bigendian()_, as it
-returns cached endianness of the local machine instead of checking it each time.
-
-The _tep_set_local_bigendian()_ function sets the endianness of the local
-machine in the _tep_ handler. The _tep_ argument is trace event parser context.
-The _endian_ argument is the endianness:
-[verse]
---
- _TEP_LITTLE_ENDIAN_ - the machine is little endian,
- _TEP_BIG_ENDIAN_ - the machine is big endian.
---
-
-RETURN VALUE
-------------
-The _tep_is_bigendian()_ function returns non zero if the endianness of the
-machine, executing the code, is big endian and zero otherwise.
-
-The _tep_is_local_bigendian()_ function returns true, if the endianness of the
-local machine, saved in the _tep_ handler, is big endian, or false otherwise.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
- if (tep_is_bigendian())
- tep_set_local_bigendian(tep, TEP_BIG_ENDIAN);
- else
- tep_set_local_bigendian(tep, TEP_LITTLE_ENDIAN);
-...
- if (tep_is_local_bigendian(tep))
- printf("This machine you are running on is bigendian\n");
- else
- printf("This machine you are running on is little endian\n");
-
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_get_long_size, tep_set_long_size - Get / set the size of a long integer on
-the machine, where the trace is generated, in bytes
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-int *tep_get_long_size*(strucqt tep_handle pass:[*]_tep_);
-void *tep_set_long_size*(struct tep_handle pass:[*]_tep_, int _long_size_);
---
-
-DESCRIPTION
------------
-The _tep_get_long_size()_ function returns the size of a long integer on the machine,
-where the trace is generated. The _tep_ argument is trace event parser context.
-
-The _tep_set_long_size()_ function sets the size of a long integer on the machine,
-where the trace is generated. The _tep_ argument is trace event parser context.
-The _long_size_ is the size of a long integer, in bytes.
-
-RETURN VALUE
-------------
-The _tep_get_long_size()_ function returns the size of a long integer on the machine,
-where the trace is generated, in bytes.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
-tep_set_long_size(tep, 4);
-...
-int long_size = tep_get_long_size(tep);
-...
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_get_page_size, tep_set_page_size - Get / set the size of a memory page on
-the machine, where the trace is generated
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-int *tep_get_page_size*(struct tep_handle pass:[*]_tep_);
-void *tep_set_page_size*(struct tep_handle pass:[*]_tep_, int _page_size_);
---
-
-DESCRIPTION
------------
-The _tep_get_page_size()_ function returns the size of a memory page on
-the machine, where the trace is generated. The _tep_ argument is trace
-event parser context.
-
-The _tep_set_page_size()_ function stores in the _tep_ context the size of a
-memory page on the machine, where the trace is generated.
-The _tep_ argument is trace event parser context.
-The _page_size_ argument is the size of a memory page, in bytes.
-
-RETURN VALUE
-------------
-The _tep_get_page_size()_ function returns size of the memory page, in bytes.
-
-EXAMPLE
--------
-[source,c]
---
-#include <unistd.h>
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
- int page_size = getpagesize();
-
- tep_set_page_size(tep, page_size);
-
- printf("The page size for this machine is %d\n", tep_get_page_size(tep));
-
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_parse_event, tep_parse_format - Parse the event format information
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-enum tep_errno *tep_parse_event*(struct tep_handle pass:[*]_tep_, const char pass:[*]_buf_, unsigned long _size_, const char pass:[*]_sys_);
-enum tep_errno *tep_parse_format*(struct tep_handle pass:[*]_tep_, struct tep_event pass:[*]pass:[*]_eventp_, const char pass:[*]_buf_, unsigned long _size_, const char pass:[*]_sys_);
---
-
-DESCRIPTION
------------
-The _tep_parse_event()_ function parses the event format and creates an event
-structure to quickly parse raw data for a given event. The _tep_ argument is
-the trace event parser context. The created event structure is stored in the
-_tep_ context. The _buf_ argument is a buffer with _size_, where the event
-format data is. The event format data can be taken from
-tracefs/events/.../.../format files. The _sys_ argument is the system of
-the event.
-
-The _tep_parse_format()_ function does the same as _tep_parse_event()_. The only
-difference is in the extra _eventp_ argument, where the newly created event
-structure is returned.
-
-RETURN VALUE
-------------
-Both _tep_parse_event()_ and _tep_parse_format()_ functions return 0 on success,
-or TEP_ERRNO__... in case of an error.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
-char *buf;
-int size;
-struct tep_event *event = NULL;
-buf = read_file("/sys/kernel/tracing/events/ftrace/print/format", &size);
-if (tep_parse_event(tep, buf, size, "ftrace") != 0) {
- /* Failed to parse the ftrace print format */
-}
-
-if (tep_parse_format(tep, &event, buf, size, "ftrace") != 0) {
- /* Failed to parse the ftrace print format */
-}
-...
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_parse_header_page - Parses the data stored in the header page.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-int *tep_parse_header_page*(struct tep_handle pass:[*]_tep_, char pass:[*]_buf_, unsigned long _size_, int _long_size_);
---
-
-DESCRIPTION
------------
-The _tep_parse_header_page()_ function parses the header page data from _buf_,
-and initializes the _tep_, trace event parser context, with it. The buffer
-_buf_ is with _size_, and is supposed to be copied from
-tracefs/events/header_page.
-
-Some old kernels do not have header page info, in this case the
-_tep_parse_header_page()_ function can be called with _size_ equal to 0. The
-_tep_ context is initialized with default values. The _long_size_ can be used in
-this use case, to set the size of a long integer to be used.
-
-RETURN VALUE
-------------
-The _tep_parse_header_page()_ function returns 0 in case of success, or -1
-in case of an error.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
-char *buf;
-int size;
-buf = read_file("/sys/kernel/tracing/events/header_page", &size);
-if (tep_parse_header_page(tep, buf, size, sizeof(unsigned long)) != 0) {
- /* Failed to parse the header page */
-}
-...
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_load_plugins, tep_unload_plugins, tep_load_plugins_hook - Load / unload traceevent plugins.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-struct tep_plugin_list pass:[*]*tep_load_plugins*(struct tep_handle pass:[*]_tep_);
-void *tep_unload_plugins*(struct tep_plugin_list pass:[*]_plugin_list_, struct tep_handle pass:[*]_tep_);
-void *tep_load_plugins_hook*(struct tep_handle pass:[*]_tep_, const char pass:[*]_suffix_,
- void (pass:[*]_load_plugin_)(struct tep_handle pass:[*]tep,
- const char pass:[*]path,
- const char pass:[*]name,
- void pass:[*]data),
- void pass:[*]_data_);
---
-
-DESCRIPTION
------------
-The _tep_load_plugins()_ function loads all plugins, located in the plugin
-directories. The _tep_ argument is trace event parser context.
-The plugin directories are :
-[verse]
---
- - Directories, specified in _tep_->plugins_dir with priority TEP_PLUGIN_FIRST
- - System's plugin directory, defined at the library compile time. It
- depends on the library installation prefix and usually is
- _(install_preffix)/lib/traceevent/plugins_
- - Directory, defined by the environment variable _TRACEEVENT_PLUGIN_DIR_
- - User's plugin directory, located at _~/.local/lib/traceevent/plugins_
- - Directories, specified in _tep_->plugins_dir with priority TEP_PLUGIN_LAST
---
-Loading of plugins can be controlled by the _tep_flags_, using the
-_tep_set_flag()_ API:
-[verse]
---
- _TEP_DISABLE_SYS_PLUGINS_ - do not load plugins, located in
- the system's plugin directory.
- _TEP_DISABLE_PLUGINS_ - do not load any plugins.
---
-The _tep_set_flag()_ API needs to be called before _tep_load_plugins()_, if
-loading of all plugins is not the desired case.
-
-The _tep_unload_plugins()_ function unloads the plugins, previously loaded by
-_tep_load_plugins()_. The _tep_ argument is trace event parser context. The
-_plugin_list_ is the list of loaded plugins, returned by
-the _tep_load_plugins()_ function.
-
-The _tep_load_plugins_hook_ function walks through all directories with plugins
-and calls user specified _load_plugin()_ hook for each plugin file. Only files
-with given _suffix_ are considered to be plugins. The _data_ is a user specified
-context, passed to _load_plugin()_. Directories and the walk order are the same
-as in _tep_load_plugins()_ API.
-
-RETURN VALUE
-------------
-The _tep_load_plugins()_ function returns a list of successfully loaded plugins,
-or NULL in case no plugins are loaded.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
-struct tep_plugin_list *plugins = tep_load_plugins(tep);
-if (plugins == NULL) {
- /* no plugins are loaded */
-}
-...
-tep_unload_plugins(plugins, tep);
-...
-void print_plugin(struct tep_handle *tep, const char *path,
- const char *name, void *data)
-{
- pritnf("Found libtraceevent plugin %s/%s\n", path, name);
-}
-...
-tep_load_plugins_hook(tep, ".so", print_plugin, NULL);
-...
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_, _tep_set_flag(3)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_data_type, tep_data_pid,tep_data_preempt_count, tep_data_flags -
-Extract common fields from a record.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-enum *trace_flag_type* {
- _TRACE_FLAG_IRQS_OFF_,
- _TRACE_FLAG_IRQS_NOSUPPORT_,
- _TRACE_FLAG_NEED_RESCHED_,
- _TRACE_FLAG_HARDIRQ_,
- _TRACE_FLAG_SOFTIRQ_,
-};
-
-int *tep_data_type*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_rec_);
-int *tep_data_pid*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_rec_);
-int *tep_data_preempt_count*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_rec_);
-int *tep_data_flags*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_rec_);
---
-
-DESCRIPTION
------------
-This set of functions can be used to extract common fields from a record.
-
-The _tep_data_type()_ function gets the event id from the record _rec_.
-It reads the "common_type" field. The _tep_ argument is the trace event parser
-context.
-
-The _tep_data_pid()_ function gets the process id from the record _rec_.
-It reads the "common_pid" field. The _tep_ argument is the trace event parser
-context.
-
-The _tep_data_preempt_count()_ function gets the preemption count from the
-record _rec_. It reads the "common_preempt_count" field. The _tep_ argument is
-the trace event parser context.
-
-The _tep_data_flags()_ function gets the latency flags from the record _rec_.
-It reads the "common_flags" field. The _tep_ argument is the trace event parser
-context. Supported latency flags are:
-[verse]
---
- _TRACE_FLAG_IRQS_OFF_, Interrupts are disabled.
- _TRACE_FLAG_IRQS_NOSUPPORT_, Reading IRQ flag is not supported by the architecture.
- _TRACE_FLAG_NEED_RESCHED_, Task needs rescheduling.
- _TRACE_FLAG_HARDIRQ_, Hard IRQ is running.
- _TRACE_FLAG_SOFTIRQ_, Soft IRQ is running.
---
-
-RETURN VALUE
-------------
-The _tep_data_type()_ function returns an integer, representing the event id.
-
-The _tep_data_pid()_ function returns an integer, representing the process id
-
-The _tep_data_preempt_count()_ function returns an integer, representing the
-preemption count.
-
-The _tep_data_flags()_ function returns an integer, representing the latency
-flags. Look at the _trace_flag_type_ enum for supported flags.
-
-All these functions in case of an error return a negative integer.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
-void process_record(struct tep_record *record)
-{
- int data;
-
- data = tep_data_type(tep, record);
- if (data >= 0) {
- /* Got the ID of the event */
- }
-
- data = tep_data_pid(tep, record);
- if (data >= 0) {
- /* Got the process ID */
- }
-
- data = tep_data_preempt_count(tep, record);
- if (data >= 0) {
- /* Got the preemption count */
- }
-
- data = tep_data_flags(tep, record);
- if (data >= 0) {
- /* Got the latency flags */
- }
-}
-...
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_register_event_handler, tep_unregister_event_handler - Register /
-unregisters a callback function to parse an event information.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-enum *tep_reg_handler* {
- _TEP_REGISTER_SUCCESS_,
- _TEP_REGISTER_SUCCESS_OVERWRITE_,
-};
-
-int *tep_register_event_handler*(struct tep_handle pass:[*]_tep_, int _id_, const char pass:[*]_sys_name_, const char pass:[*]_event_name_, tep_event_handler_func _func_, void pass:[*]_context_);
-int *tep_unregister_event_handler*(struct tep_handle pass:[*]tep, int id, const char pass:[*]sys_name, const char pass:[*]event_name, tep_event_handler_func func, void pass:[*]_context_);
-
-typedef int (*pass:[*]tep_event_handler_func*)(struct trace_seq pass:[*]s, struct tep_record pass:[*]record, struct tep_event pass:[*]event, void pass:[*]context);
---
-
-DESCRIPTION
------------
-The _tep_register_event_handler()_ function registers a handler function,
-which is going to be called to parse the information for a given event.
-The _tep_ argument is the trace event parser context. The _id_ argument is
-the id of the event. The _sys_name_ argument is the name of the system,
-the event belongs to. The _event_name_ argument is the name of the event.
-If _id_ is >= 0, it is used to find the event, otherwise _sys_name_ and
-_event_name_ are used. The _func_ is a pointer to the function, which is going
-to be called to parse the event information. The _context_ argument is a pointer
-to the context data, which will be passed to the _func_. If a handler function
-for the same event is already registered, it will be overridden with the new
-one. This mechanism allows a developer to override the parsing of a given event.
-If for some reason the default print format is not sufficient, the developer
-can register a function for an event to be used to parse the data instead.
-
-The _tep_unregister_event_handler()_ function unregisters the handler function,
-previously registered with _tep_register_event_handler()_. The _tep_ argument
-is the trace event parser context. The _id_, _sys_name_, _event_name_, _func_,
-and _context_ are the same arguments, as when the callback function _func_ was
-registered.
-
-The _tep_event_handler_func_ is the type of the custom event handler
-function. The _s_ argument is the trace sequence, it can be used to create a
-custom string, describing the event. A _record_ to get the event from is passed
-as input parameter and also the _event_ - the handle to the record's event. The
-_context_ is custom context, set when the custom event handler is registered.
-
-RETURN VALUE
-------------
-The _tep_register_event_handler()_ function returns _TEP_REGISTER_SUCCESS_
-if the new handler is registered successfully or
-_TEP_REGISTER_SUCCESS_OVERWRITE_ if an existing handler is overwritten.
-If there is not enough memory to complete the registration,
-TEP_ERRNO__MEM_ALLOC_FAILED is returned.
-
-The _tep_unregister_event_handler()_ function returns 0 if _func_ was removed
-successful or, -1 if the event was not found.
-
-The _tep_event_handler_func_ should return -1 in case of an error,
-or 0 otherwise.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-#include <trace-seq.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
-int timer_expire_handler(struct trace_seq *s, struct tep_record *record,
- struct tep_event *event, void *context)
-{
- trace_seq_printf(s, "hrtimer=");
-
- if (tep_print_num_field(s, "0x%llx", event, "timer", record, 0) == -1)
- tep_print_num_field(s, "0x%llx", event, "hrtimer", record, 1);
-
- trace_seq_printf(s, " now=");
-
- tep_print_num_field(s, "%llu", event, "now", record, 1);
-
- tep_print_func_field(s, " function=%s", event, "function", record, 0);
-
- return 0;
-}
-...
- int ret;
-
- ret = tep_register_event_handler(tep, -1, "timer", "hrtimer_expire_entry",
- timer_expire_handler, NULL);
- if (ret < 0) {
- char buf[32];
-
- tep_strerror(tep, ret, buf, 32)
- printf("Failed to register handler for hrtimer_expire_entry: %s\n", buf);
- } else {
- switch (ret) {
- case TEP_REGISTER_SUCCESS:
- printf ("Registered handler for hrtimer_expire_entry\n");
- break;
- case TEP_REGISTER_SUCCESS_OVERWRITE:
- printf ("Overwrote handler for hrtimer_expire_entry\n");
- break;
- }
- }
-...
- ret = tep_unregister_event_handler(tep, -1, "timer", "hrtimer_expire_entry",
- timer_expire_handler, NULL);
- if ( ret )
- printf ("Failed to unregister handler for hrtimer_expire_entry\n");
-
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*trace-seq.h*
- Header file to include in order to have access to trace sequences
- related APIs. Trace sequences are used to allow a function to call
- several other functions to create a string of data to use.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_register_print_function,tep_unregister_print_function -
-Registers / Unregisters a helper function.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-enum *tep_func_arg_type* {
- TEP_FUNC_ARG_VOID,
- TEP_FUNC_ARG_INT,
- TEP_FUNC_ARG_LONG,
- TEP_FUNC_ARG_STRING,
- TEP_FUNC_ARG_PTR,
- TEP_FUNC_ARG_MAX_TYPES
-};
-
-typedef unsigned long long (*pass:[*]tep_func_handler*)(struct trace_seq pass:[*]s, unsigned long long pass:[*]args);
-
-int *tep_register_print_function*(struct tep_handle pass:[*]_tep_, tep_func_handler _func_, enum tep_func_arg_type _ret_type_, char pass:[*]_name_, _..._);
-int *tep_unregister_print_function*(struct tep_handle pass:[*]_tep_, tep_func_handler _func_, char pass:[*]_name_);
---
-
-DESCRIPTION
------------
-Some events may have helper functions in the print format arguments.
-This allows a plugin to dynamically create a way to process one of
-these functions.
-
-The _tep_register_print_function()_ registers such helper function. The _tep_
-argument is the trace event parser context. The _func_ argument is a pointer
-to the helper function. The _ret_type_ argument is the return type of the
-helper function, value from the _tep_func_arg_type_ enum. The _name_ is the name
-of the helper function, as seen in the print format arguments. The _..._ is a
-variable list of _tep_func_arg_type_ enums, the _func_ function arguments.
-This list must end with _TEP_FUNC_ARG_VOID_. See 'EXAMPLE' section.
-
-The _tep_unregister_print_function()_ unregisters a helper function, previously
-registered with _tep_register_print_function()_. The _tep_ argument is the
-trace event parser context. The _func_ and _name_ arguments are the same, used
-when the helper function was registered.
-
-The _tep_func_handler_ is the type of the helper function. The _s_ argument is
-the trace sequence, it can be used to create a custom string.
-The _args_ is a list of arguments, defined when the helper function was
-registered.
-
-RETURN VALUE
-------------
-The _tep_register_print_function()_ function returns 0 in case of success.
-In case of an error, TEP_ERRNO_... code is returned.
-
-The _tep_unregister_print_function()_ returns 0 in case of success, or -1 in
-case of an error.
-
-EXAMPLE
--------
-Some events have internal functions calls, that appear in the print format
-output. For example "tracefs/events/i915/g4x_wm/format" has:
-[source,c]
---
-print fmt: "pipe %c, frame=%u, scanline=%u, wm %d/%d/%d, sr %s/%d/%d/%d, hpll %s/%d/%d/%d, fbc %s",
- ((REC->pipe) + 'A'), REC->frame, REC->scanline, REC->primary,
- REC->sprite, REC->cursor, yesno(REC->cxsr), REC->sr_plane,
- REC->sr_cursor, REC->sr_fbc, yesno(REC->hpll), REC->hpll_plane,
- REC->hpll_cursor, REC->hpll_fbc, yesno(REC->fbc)
---
-Notice the call to function _yesno()_ in the print arguments. In the kernel
-context, this function has the following implementation:
-[source,c]
---
-static const char *yesno(int x)
-{
- static const char *yes = "yes";
- static const char *no = "no";
-
- return x ? yes : no;
-}
---
-The user space event parser has no idea how to handle this _yesno()_ function.
-The _tep_register_print_function()_ API can be used to register a user space
-helper function, mapped to the kernel's _yesno()_:
-[source,c]
---
-#include <event-parse.h>
-#include <trace-seq.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
-static const char *yes_no_helper(int x)
-{
- return x ? "yes" : "no";
-}
-...
- if ( tep_register_print_function(tep,
- yes_no_helper,
- TEP_FUNC_ARG_STRING,
- "yesno",
- TEP_FUNC_ARG_INT,
- TEP_FUNC_ARG_VOID) != 0) {
- /* Failed to register yes_no_helper function */
- }
-
-/*
- Now, when the event parser encounters this yesno() function, it will know
- how to handle it.
-*/
-...
- if (tep_unregister_print_function(tep, yes_no_helper, "yesno") != 0) {
- /* Failed to unregister yes_no_helper function */
- }
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*trace-seq.h*
- Header file to include in order to have access to trace sequences
- related APIs. Trace sequences are used to allow a function to call
- several other functions to create a string of data to use.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_set_flag, tep_clear_flag, tep_test_flag -
-Manage flags of trace event parser context.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-enum *tep_flag* {
- _TEP_NSEC_OUTPUT_,
- _TEP_DISABLE_SYS_PLUGINS_,
- _TEP_DISABLE_PLUGINS_
-};
-void *tep_set_flag*(struct tep_handle pass:[*]_tep_, enum tep_flag _flag_);
-void *tep_clear_flag*(struct tep_handle pass:[*]_tep_, enum tep_flag _flag_);
-bool *tep_test_flag*(struct tep_handle pass:[*]_tep_, enum tep_flag _flag_);
---
-
-DESCRIPTION
------------
-Trace event parser context flags are defined in *enum tep_flag*:
-[verse]
---
-_TEP_NSEC_OUTPUT_ - print event's timestamp in nano seconds, instead of micro seconds.
-_TEP_DISABLE_SYS_PLUGINS_ - disable plugins, located in system's plugin
- directory. This directory is defined at library compile
- time, and usually depends on library installation
- prefix: (install_preffix)/lib/traceevent/plugins
-_TEP_DISABLE_PLUGINS_ - disable all library plugins:
- - in system's plugin directory
- - in directory, defined by the environment variable _TRACEEVENT_PLUGIN_DIR_
- - in user's home directory, _~/.traceevent/plugins_
---
-Note: plugin related flags must me set before calling _tep_load_plugins()_ API.
-
-The _tep_set_flag()_ function sets _flag_ to _tep_ context.
-
-The _tep_clear_flag()_ function clears _flag_ from _tep_ context.
-
-The _tep_test_flag()_ function tests if _flag_ is set to _tep_ context.
-
-RETURN VALUE
-------------
-_tep_test_flag()_ function returns true if _flag_ is set, false otherwise.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
-/* Print timestamps in nanoseconds */
-tep_set_flag(tep, TEP_NSEC_OUTPUT);
-...
-if (tep_test_flag(tep, TEP_NSEC_OUTPUT)) {
- /* print timestamps in nanoseconds */
-} else {
- /* print timestamps in microseconds */
-}
-...
-/* Print timestamps in microseconds */
-tep_clear_flag(tep, TEP_NSEC_OUTPUT);
-...
---
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-tep_strerror - Returns a string describing regular errno and tep error number.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-int *tep_strerror*(struct tep_handle pass:[*]_tep_, enum tep_errno _errnum_, char pass:[*]_buf_, size_t _buflen_);
-
---
-DESCRIPTION
------------
-The _tep_strerror()_ function converts tep error number into a human
-readable string.
-The _tep_ argument is trace event parser context. The _errnum_ is a regular
-errno, defined in errno.h, or a tep error number. The string, describing this
-error number is copied in the _buf_ argument. The _buflen_ argument is
-the size of the _buf_.
-
-It as a thread safe wrapper around strerror_r(). The library function has two
-different behaviors - POSIX and GNU specific. The _tep_strerror()_ API always
-behaves as the POSIX version - the error string is copied in the user supplied
-buffer.
-
-RETURN VALUE
-------------
-The _tep_strerror()_ function returns 0, if a valid _errnum_ is passed and the
-string is copied into _buf_. If _errnum_ is not a valid error number,
--1 is returned and _buf_ is not modified.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-...
-struct tep_handle *tep = tep_alloc();
-...
-char buf[32];
-char *pool = calloc(1, 128);
-if (tep == NULL) {
- tep_strerror(tep, TEP_ERRNO__MEM_ALLOC_FAILED, buf, 32);
- printf ("The pool is not initialized, %s", buf);
-}
-...
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-trace_seq_init, trace_seq_destroy, trace_seq_reset, trace_seq_terminate,
-trace_seq_putc, trace_seq_puts, trace_seq_printf, trace_seq_vprintf,
-trace_seq_do_fprintf, trace_seq_do_printf -
-Initialize / destroy a trace sequence.
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-*#include <trace-seq.h>*
-
-void *trace_seq_init*(struct trace_seq pass:[*]_s_);
-void *trace_seq_destroy*(struct trace_seq pass:[*]_s_);
-void *trace_seq_reset*(struct trace_seq pass:[*]_s_);
-void *trace_seq_terminate*(struct trace_seq pass:[*]_s_);
-int *trace_seq_putc*(struct trace_seq pass:[*]_s_, unsigned char _c_);
-int *trace_seq_puts*(struct trace_seq pass:[*]_s_, const char pass:[*]_str_);
-int *trace_seq_printf*(struct trace_seq pass:[*]_s_, const char pass:[*]_fmt_, _..._);
-int *trace_seq_vprintf*(struct trace_seq pass:[*]_s_, const char pass:[*]_fmt_, va_list _args_);
-int *trace_seq_do_printf*(struct trace_seq pass:[*]_s_);
-int *trace_seq_do_fprintf*(struct trace_seq pass:[*]_s_, FILE pass:[*]_fp_);
---
-
-DESCRIPTION
------------
-Trace sequences are used to allow a function to call several other functions
-to create a string of data to use.
-
-The _trace_seq_init()_ function initializes the trace sequence _s_.
-
-The _trace_seq_destroy()_ function destroys the trace sequence _s_ and frees
-all its resources that it had used.
-
-The _trace_seq_reset()_ function re-initializes the trace sequence _s_. All
-characters already written in _s_ will be deleted.
-
-The _trace_seq_terminate()_ function terminates the trace sequence _s_. It puts
-the null character pass:['\0'] at the end of the buffer.
-
-The _trace_seq_putc()_ function puts a single character _c_ in the trace
-sequence _s_.
-
-The _trace_seq_puts()_ function puts a NULL terminated string _str_ in the
-trace sequence _s_.
-
-The _trace_seq_printf()_ function puts a formated string _fmt _with
-variable arguments _..._ in the trace sequence _s_.
-
-The _trace_seq_vprintf()_ function puts a formated string _fmt _with
-list of arguments _args_ in the trace sequence _s_.
-
-The _trace_seq_do_printf()_ function prints the buffer of trace sequence _s_ to
-the standard output stdout.
-
-The _trace_seq_do_fprintf()_ function prints the buffer of trace sequence _s_
-to the given file _fp_.
-
-RETURN VALUE
-------------
-Both _trace_seq_putc()_ and _trace_seq_puts()_ functions return the number of
-characters put in the trace sequence, or 0 in case of an error
-
-Both _trace_seq_printf()_ and _trace_seq_vprintf()_ functions return 0 if the
-trace oversizes the buffer's free space, the number of characters printed, or
-a negative value in case of an error.
-
-Both _trace_seq_do_printf()_ and _trace_seq_do_fprintf()_ functions return the
-number of printed characters, or -1 in case of an error.
-
-EXAMPLE
--------
-[source,c]
---
-#include <event-parse.h>
-#include <trace-seq.h>
-...
-struct trace_seq seq;
-trace_seq_init(&seq);
-...
-void foo_seq_print(struct trace_seq *tseq, char *format, ...)
-{
- va_list ap;
- va_start(ap, format);
- if (trace_seq_vprintf(tseq, format, ap) <= 0) {
- /* Failed to print in the trace sequence */
- }
- va_end(ap);
-}
-
-trace_seq_reset(&seq);
-
-char *str = " MAN page example";
-if (trace_seq_puts(&seq, str) != strlen(str)) {
- /* Failed to put str in the trace sequence */
-}
-if (trace_seq_putc(&seq, ':') != 1) {
- /* Failed to put ':' in the trace sequence */
-}
-if (trace_seq_printf(&seq, " trace sequence: %d", 1) <= 0) {
- /* Failed to print in the trace sequence */
-}
-foo_seq_print( &seq, " %d\n", 2);
-
-trace_seq_terminate(&seq);
-...
-
-if (trace_seq_do_printf(&seq) < 0 ) {
- /* Failed to print the sequence buffer to the standard output */
-}
-FILE *fp = fopen("trace.txt", "w");
-if (trace_seq_do_fprintf(&seq, fp) < 0 ) [
- /* Failed to print the sequence buffer to the trace.txt file */
-}
-
-trace_seq_destroy(&seq);
-...
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*trace-seq.h*
- Header file to include in order to have access to trace sequences related APIs.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_libtraceevent(3)_, _trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-libtraceevent(3)
-================
-
-NAME
-----
-libtraceevent - Linux kernel trace event library
-
-SYNOPSIS
---------
-[verse]
---
-*#include <event-parse.h>*
-
-Management of tep handler data structure and access of its members:
- struct tep_handle pass:[*]*tep_alloc*(void);
- void *tep_free*(struct tep_handle pass:[*]_tep_);
- void *tep_ref*(struct tep_handle pass:[*]_tep_);
- void *tep_unref*(struct tep_handle pass:[*]_tep_);
- int *tep_get_ref*(struct tep_handle pass:[*]_tep_);
- void *tep_set_flag*(struct tep_handle pass:[*]_tep_, enum tep_flag _flag_);
- void *tep_clear_flag*(struct tep_handle pass:[*]_tep_, enum tep_flag _flag_);
- bool *tep_test_flag*(struct tep_handle pass:[*]_tep_, enum tep_flag _flags_);
- int *tep_get_cpus*(struct tep_handle pass:[*]_tep_);
- void *tep_set_cpus*(struct tep_handle pass:[*]_tep_, int _cpus_);
- int *tep_get_long_size*(strucqt tep_handle pass:[*]_tep_);
- void *tep_set_long_size*(struct tep_handle pass:[*]_tep_, int _long_size_);
- int *tep_get_page_size*(struct tep_handle pass:[*]_tep_);
- void *tep_set_page_size*(struct tep_handle pass:[*]_tep_, int _page_size_);
- int *tep_get_header_page_size*(struct tep_handle pass:[*]_tep_);
- int *tep_get_header_timestamp_size*(struct tep_handle pass:[*]_tep_);
- bool *tep_is_old_format*(struct tep_handle pass:[*]_tep_);
- int *tep_strerror*(struct tep_handle pass:[*]_tep_, enum tep_errno _errnum_, char pass:[*]_buf_, size_t _buflen_);
-
-Register / unregister APIs:
- int *tep_register_function*(struct tep_handle pass:[*]_tep_, char pass:[*]_name_, unsigned long long _addr_, char pass:[*]_mod_);
- int *tep_register_event_handler*(struct tep_handle pass:[*]_tep_, int _id_, const char pass:[*]_sys_name_, const char pass:[*]_event_name_, tep_event_handler_func _func_, void pass:[*]_context_);
- int *tep_unregister_event_handler*(struct tep_handle pass:[*]tep, int id, const char pass:[*]sys_name, const char pass:[*]event_name, tep_event_handler_func func, void pass:[*]_context_);
- int *tep_register_print_string*(struct tep_handle pass:[*]_tep_, const char pass:[*]_fmt_, unsigned long long _addr_);
- int *tep_register_print_function*(struct tep_handle pass:[*]_tep_, tep_func_handler _func_, enum tep_func_arg_type _ret_type_, char pass:[*]_name_, _..._);
- int *tep_unregister_print_function*(struct tep_handle pass:[*]_tep_, tep_func_handler _func_, char pass:[*]_name_);
-
-Plugins management:
- struct tep_plugin_list pass:[*]*tep_load_plugins*(struct tep_handle pass:[*]_tep_);
- void *tep_unload_plugins*(struct tep_plugin_list pass:[*]_plugin_list_, struct tep_handle pass:[*]_tep_);
- char pass:[*]pass:[*]*tep_plugin_list_options*(void);
- void *tep_plugin_free_options_list*(char pass:[*]pass:[*]_list_);
- int *tep_plugin_add_options*(const char pass:[*]_name_, struct tep_plugin_option pass:[*]_options_);
- void *tep_plugin_remove_options*(struct tep_plugin_option pass:[*]_options_);
- void *tep_print_plugins*(struct trace_seq pass:[*]_s_, const char pass:[*]_prefix_, const char pass:[*]_suffix_, const struct tep_plugin_list pass:[*]_list_);
-
-Event related APIs:
- struct tep_event pass:[*]*tep_get_event*(struct tep_handle pass:[*]_tep_, int _index_);
- struct tep_event pass:[*]*tep_get_first_event*(struct tep_handle pass:[*]_tep_);
- int *tep_get_events_count*(struct tep_handle pass:[*]_tep_);
- struct tep_event pass:[*]pass:[*]*tep_list_events*(struct tep_handle pass:[*]_tep_, enum tep_event_sort_type _sort_type_);
- struct tep_event pass:[*]pass:[*]*tep_list_events_copy*(struct tep_handle pass:[*]_tep_, enum tep_event_sort_type _sort_type_);
- void *tep_print_event*(struct tep_handle pass:[*]_tep_, struct trace_seq pass:[*]_s_, struct tep_record pass:[*]_record_, const char pass:[*]_fmt_, _..._);
-
-Event finding:
- struct tep_event pass:[*]*tep_find_event*(struct tep_handle pass:[*]_tep_, int _id_);
- struct tep_event pass:[*]*tep_find_event_by_name*(struct tep_handle pass:[*]_tep_, const char pass:[*]_sys_, const char pass:[*]_name_);
- struct tep_event pass:[*]*tep_find_event_by_record*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_record_);
-
-Parsing of event files:
- int *tep_parse_header_page*(struct tep_handle pass:[*]_tep_, char pass:[*]_buf_, unsigned long _size_, int _long_size_);
- enum tep_errno *tep_parse_event*(struct tep_handle pass:[*]_tep_, const char pass:[*]_buf_, unsigned long _size_, const char pass:[*]_sys_);
- enum tep_errno *tep_parse_format*(struct tep_handle pass:[*]_tep_, struct tep_event pass:[*]pass:[*]_eventp_, const char pass:[*]_buf_, unsigned long _size_, const char pass:[*]_sys_);
-
-APIs related to fields from event's format files:
- struct tep_format_field pass:[*]pass:[*]*tep_event_common_fields*(struct tep_event pass:[*]_event_);
- struct tep_format_field pass:[*]pass:[*]*tep_event_fields*(struct tep_event pass:[*]_event_);
- void pass:[*]*tep_get_field_raw*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, int pass:[*]_len_, int _err_);
- int *tep_get_field_val*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, unsigned long long pass:[*]_val_, int _err_);
- int *tep_get_common_field_val*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, unsigned long long pass:[*]_val_, int _err_);
- int *tep_get_any_field_val*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, unsigned long long pass:[*]_val_, int _err_);
- int *tep_read_number_field*(struct tep_format_field pass:[*]_field_, const void pass:[*]_data_, unsigned long long pass:[*]_value_);
-
-Event fields printing:
- void *tep_print_field*(struct trace_seq pass:[*]_s_, void pass:[*]_data_, struct tep_format_field pass:[*]_field_);
- void *tep_print_fields*(struct trace_seq pass:[*]_s_, void pass:[*]_data_, int _size_, struct tep_event pass:[*]_event_);
- int *tep_print_num_field*(struct trace_seq pass:[*]_s_, const char pass:[*]_fmt_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, int _err_);
- int *tep_print_func_field*(struct trace_seq pass:[*]_s_, const char pass:[*]_fmt_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, int _err_);
-
-Event fields finding:
- struct tep_format_field pass:[*]*tep_find_common_field*(struct tep_event pass:[*]_event_, const char pass:[*]_name_);
- struct tep_format_field pass:[*]*tep_find_field*(struct tep_event_ormat pass:[*]_event_, const char pass:[*]_name_);
- struct tep_format_field pass:[*]*tep_find_any_field*(struct tep_event pass:[*]_event_, const char pass:[*]_name_);
-
-Functions resolver:
- int *tep_set_function_resolver*(struct tep_handle pass:[*]_tep_, tep_func_resolver_t pass:[*]_func_, void pass:[*]_priv_);
- void *tep_reset_function_resolver*(struct tep_handle pass:[*]_tep_);
- const char pass:[*]*tep_find_function*(struct tep_handle pass:[*]_tep_, unsigned long long _addr_);
- unsigned long long *tep_find_function_address*(struct tep_handle pass:[*]_tep_, unsigned long long _addr_);
-
-Filter management:
- struct tep_event_filter pass:[*]*tep_filter_alloc*(struct tep_handle pass:[*]_tep_);
- enum tep_errno *tep_filter_add_filter_str*(struct tep_event_filter pass:[*]_filter_, const char pass:[*]_filter_str_);
- enum tep_errno *tep_filter_match*(struct tep_event_filter pass:[*]_filter_, struct tep_record pass:[*]_record_);
- int *tep_filter_strerror*(struct tep_event_filter pass:[*]_filter_, enum tep_errno _err_, char pass:[*]buf, size_t _buflen_);
- int *tep_event_filtered*(struct tep_event_filter pass:[*]_filter_, int _event_id_);
- void *tep_filter_reset*(struct tep_event_filter pass:[*]_filter_);
- void *tep_filter_free*(struct tep_event_filter pass:[*]_filter_);
- char pass:[*]*tep_filter_make_string*(struct tep_event_filter pass:[*]_filter_, int _event_id_);
- int *tep_filter_remove_event*(struct tep_event_filter pass:[*]_filter_, int _event_id_);
- int *tep_filter_copy*(struct tep_event_filter pass:[*]_dest_, struct tep_event_filter pass:[*]_source_);
- int *tep_filter_compare*(struct tep_event_filter pass:[*]_filter1_, struct tep_event_filter pass:[*]_filter2_);
-
-Parsing various data from the records:
- int *tep_data_type*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_rec_);
- int *tep_data_pid*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_rec_);
- int *tep_data_preempt_count*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_rec_);
- int *tep_data_flags*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_rec_);
-
-Command and task related APIs:
- const char pass:[*]*tep_data_comm_from_pid*(struct tep_handle pass:[*]_tep_, int _pid_);
- struct cmdline pass:[*]*tep_data_pid_from_comm*(struct tep_handle pass:[*]_tep_, const char pass:[*]_comm_, struct cmdline pass:[*]_next_);
- int *tep_register_comm*(struct tep_handle pass:[*]_tep_, const char pass:[*]_comm_, int _pid_);
- int *tep_override_comm*(struct tep_handle pass:[*]_tep_, const char pass:[*]_comm_, int _pid_);
- bool *tep_is_pid_registered*(struct tep_handle pass:[*]_tep_, int _pid_);
- int *tep_cmdline_pid*(struct tep_handle pass:[*]_tep_, struct cmdline pass:[*]_cmdline_);
-
-Endian related APIs:
- int *tep_is_bigendian*(void);
- unsigned long long *tep_read_number*(struct tep_handle pass:[*]_tep_, const void pass:[*]_ptr_, int _size_);
- bool *tep_is_file_bigendian*(struct tep_handle pass:[*]_tep_);
- void *tep_set_file_bigendian*(struct tep_handle pass:[*]_tep_, enum tep_endian _endian_);
- bool *tep_is_local_bigendian*(struct tep_handle pass:[*]_tep_);
- void *tep_set_local_bigendian*(struct tep_handle pass:[*]_tep_, enum tep_endian _endian_);
-
-Trace sequences:
-*#include <trace-seq.h>*
- void *trace_seq_init*(struct trace_seq pass:[*]_s_);
- void *trace_seq_reset*(struct trace_seq pass:[*]_s_);
- void *trace_seq_destroy*(struct trace_seq pass:[*]_s_);
- int *trace_seq_printf*(struct trace_seq pass:[*]_s_, const char pass:[*]_fmt_, ...);
- int *trace_seq_vprintf*(struct trace_seq pass:[*]_s_, const char pass:[*]_fmt_, va_list _args_);
- int *trace_seq_puts*(struct trace_seq pass:[*]_s_, const char pass:[*]_str_);
- int *trace_seq_putc*(struct trace_seq pass:[*]_s_, unsigned char _c_);
- void *trace_seq_terminate*(struct trace_seq pass:[*]_s_);
- int *trace_seq_do_fprintf*(struct trace_seq pass:[*]_s_, FILE pass:[*]_fp_);
- int *trace_seq_do_printf*(struct trace_seq pass:[*]_s_);
---
-
-DESCRIPTION
------------
-The libtraceevent(3) library provides APIs to access kernel tracepoint events,
-located in the tracefs file system under the events directory.
-
-ENVIRONMENT
------------
-[verse]
---
-TRACEEVENT_PLUGIN_DIR
- Additional plugin directory. All shared object files, located in this directory will be loaded as traceevent plugins.
---
-
-FILES
------
-[verse]
---
-*event-parse.h*
- Header file to include in order to have access to the library APIs.
-*trace-seq.h*
- Header file to include in order to have access to trace sequences related APIs.
- Trace sequences are used to allow a function to call several other functions
- to create a string of data to use.
-*-ltraceevent*
- Linker switch to add when building a program that uses the library.
---
-
-SEE ALSO
---------
-_trace-cmd(1)_
-
-AUTHOR
-------
-[verse]
---
-*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
-*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
---
-REPORTING BUGS
---------------
-Report bugs to <linux-trace-devel@vger.kernel.org>
-
-LICENSE
--------
-libtraceevent is Free Software licensed under the GNU LGPL 2.1
-
-RESOURCES
----------
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+++ /dev/null
-<!-- manpage-1.72.xsl:
- special settings for manpages rendered from asciidoc+docbook
- handles peculiarities in docbook-xsl 1.72.0 -->
-<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
- version="1.0">
-
-<xsl:import href="manpage-base.xsl"/>
-
-<!-- these are the special values for the roff control characters
- needed for docbook-xsl 1.72.0 -->
-<xsl:param name="git.docbook.backslash">▓</xsl:param>
-<xsl:param name="git.docbook.dot" >⌂</xsl:param>
-
-</xsl:stylesheet>
+++ /dev/null
-<!-- manpage-base.xsl:
- special formatting for manpages rendered from asciidoc+docbook -->
-<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
- version="1.0">
-
-<!-- these params silence some output from xmlto -->
-<xsl:param name="man.output.quietly" select="1"/>
-<xsl:param name="refentry.meta.get.quietly" select="1"/>
-
-<!-- convert asciidoc callouts to man page format;
- git.docbook.backslash and git.docbook.dot params
- must be supplied by another XSL file or other means -->
-<xsl:template match="co">
- <xsl:value-of select="concat(
- $git.docbook.backslash,'fB(',
- substring-after(@id,'-'),')',
- $git.docbook.backslash,'fR')"/>
-</xsl:template>
-<xsl:template match="calloutlist">
- <xsl:value-of select="$git.docbook.dot"/>
- <xsl:text>sp </xsl:text>
- <xsl:apply-templates/>
- <xsl:text> </xsl:text>
-</xsl:template>
-<xsl:template match="callout">
- <xsl:value-of select="concat(
- $git.docbook.backslash,'fB',
- substring-after(@arearefs,'-'),
- '. ',$git.docbook.backslash,'fR')"/>
- <xsl:apply-templates/>
- <xsl:value-of select="$git.docbook.dot"/>
- <xsl:text>br </xsl:text>
-</xsl:template>
-
-</xsl:stylesheet>
+++ /dev/null
-<!-- manpage-bold-literal.xsl:
- special formatting for manpages rendered from asciidoc+docbook -->
-<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
- version="1.0">
-
-<!-- render literal text as bold (instead of plain or monospace);
- this makes literal text easier to distinguish in manpages
- viewed on a tty -->
-<xsl:template match="literal">
- <xsl:value-of select="$git.docbook.backslash"/>
- <xsl:text>fB</xsl:text>
- <xsl:apply-templates/>
- <xsl:value-of select="$git.docbook.backslash"/>
- <xsl:text>fR</xsl:text>
-</xsl:template>
-
-</xsl:stylesheet>
+++ /dev/null
-<!-- manpage-normal.xsl:
- special settings for manpages rendered from asciidoc+docbook
- handles anything we want to keep away from docbook-xsl 1.72.0 -->
-<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
- version="1.0">
-
-<xsl:import href="manpage-base.xsl"/>
-
-<!-- these are the normal values for the roff control characters -->
-<xsl:param name="git.docbook.backslash">\</xsl:param>
-<xsl:param name="git.docbook.dot" >.</xsl:param>
-
-</xsl:stylesheet>
+++ /dev/null
-<!-- manpage-suppress-sp.xsl:
- special settings for manpages rendered from asciidoc+docbook
- handles erroneous, inline .sp in manpage output of some
- versions of docbook-xsl -->
-<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
- version="1.0">
-
-<!-- attempt to work around spurious .sp at the tail of the line
- that some versions of docbook stylesheets seem to add -->
-<xsl:template match="simpara">
- <xsl:variable name="content">
- <xsl:apply-templates/>
- </xsl:variable>
- <xsl:value-of select="normalize-space($content)"/>
- <xsl:if test="not(ancestor::authorblurb) and
- not(ancestor::personblurb)">
- <xsl:text> </xsl:text>
- </xsl:if>
-</xsl:template>
-
-</xsl:stylesheet>
+++ /dev/null
-# SPDX-License-Identifier: GPL-2.0
-# trace-cmd version
-EP_VERSION = 1
-EP_PATCHLEVEL = 1
-EP_EXTRAVERSION = 0
-
-# file format version
-FILE_VERSION = 6
-
-MAKEFLAGS += --no-print-directory
-
-
-# Makefiles suck: This macro sets a default value of $(2) for the
-# variable named by $(1), unless the variable has been set by
-# environment or command line. This is necessary for CC and AR
-# because make sets default values, so the simpler ?= approach
-# won't work as expected.
-define allow-override
- $(if $(or $(findstring environment,$(origin $(1))),\
- $(findstring command line,$(origin $(1)))),,\
- $(eval $(1) = $(2)))
-endef
-
-# Allow setting CC and AR, or setting CROSS_COMPILE as a prefix.
-$(call allow-override,CC,$(CROSS_COMPILE)gcc)
-$(call allow-override,AR,$(CROSS_COMPILE)ar)
-$(call allow-override,NM,$(CROSS_COMPILE)nm)
-$(call allow-override,PKG_CONFIG,pkg-config)
-
-EXT = -std=gnu99
-INSTALL = install
-
-# Use DESTDIR for installing into a different root directory.
-# This is useful for building a package. The program will be
-# installed in this directory as if it was the root directory.
-# Then the build tool can move it later.
-DESTDIR ?=
-DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
-
-LP64 := $(shell echo __LP64__ | ${CC} ${CFLAGS} -E -x c - | tail -n 1)
-ifeq ($(LP64), 1)
- libdir_relative_temp = lib64
-else
- libdir_relative_temp = lib
-endif
-
-libdir_relative ?= $(libdir_relative_temp)
-prefix ?= /usr/local
-libdir = $(prefix)/$(libdir_relative)
-man_dir = $(prefix)/share/man
-man_dir_SQ = '$(subst ','\'',$(man_dir))'
-pkgconfig_dir ?= $(word 1,$(shell $(PKG_CONFIG) \
- --variable pc_path pkg-config | tr ":" " "))
-includedir_relative = traceevent
-includedir = $(prefix)/include/$(includedir_relative)
-includedir_SQ = '$(subst ','\'',$(includedir))'
-
-export man_dir man_dir_SQ INSTALL
-export DESTDIR DESTDIR_SQ
-export EVENT_PARSE_VERSION
-
-include ../../scripts/Makefile.include
-
-# copy a bit from Linux kbuild
-
-ifeq ("$(origin V)", "command line")
- VERBOSE = $(V)
-endif
-ifndef VERBOSE
- VERBOSE = 0
-endif
-
-ifeq ($(srctree),)
-srctree := $(patsubst %/,%,$(dir $(CURDIR)))
-srctree := $(patsubst %/,%,$(dir $(srctree)))
-srctree := $(patsubst %/,%,$(dir $(srctree)))
-#$(info Determined 'srctree' to be $(srctree))
-endif
-
-export prefix libdir src obj
-
-# Shell quotes
-libdir_SQ = $(subst ','\'',$(libdir))
-libdir_relative_SQ = $(subst ','\'',$(libdir_relative))
-
-CONFIG_INCLUDES =
-CONFIG_LIBS =
-CONFIG_FLAGS =
-
-VERSION = $(EP_VERSION)
-PATCHLEVEL = $(EP_PATCHLEVEL)
-EXTRAVERSION = $(EP_EXTRAVERSION)
-
-OBJ = $@
-N =
-
-EVENT_PARSE_VERSION = $(EP_VERSION).$(EP_PATCHLEVEL).$(EP_EXTRAVERSION)
-
-LIB_TARGET = libtraceevent.a libtraceevent.so.$(EVENT_PARSE_VERSION)
-LIB_INSTALL = libtraceevent.a libtraceevent.so*
-LIB_INSTALL := $(addprefix $(OUTPUT),$(LIB_INSTALL))
-
-INCLUDES = -I. -I $(srctree)/tools/include $(CONFIG_INCLUDES)
-
-# Set compile option CFLAGS
-ifdef EXTRA_CFLAGS
- CFLAGS := $(EXTRA_CFLAGS)
-else
- CFLAGS := -g -Wall
-endif
-
-# Append required CFLAGS
-override CFLAGS += -fPIC
-override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)
-override CFLAGS += $(udis86-flags) -D_GNU_SOURCE
-
-ifeq ($(VERBOSE),1)
- Q =
-else
- Q = @
-endif
-
-# Disable command line variables (CFLAGS) override from top
-# level Makefile (perf), otherwise build Makefile will get
-# the same command line setup.
-MAKEOVERRIDES=
-
-export srctree OUTPUT CC LD CFLAGS V
-build := -f $(srctree)/tools/build/Makefile.build dir=. obj
-
-TE_IN := $(OUTPUT)libtraceevent-in.o
-LIB_TARGET := $(addprefix $(OUTPUT),$(LIB_TARGET))
-
-CMD_TARGETS = $(LIB_TARGET)
-
-TARGETS = $(CMD_TARGETS)
-
-all: all_cmd plugins
-
-all_cmd: $(CMD_TARGETS)
-
-$(TE_IN): force
- $(Q)$(MAKE) $(build)=libtraceevent
-
-$(OUTPUT)libtraceevent.so.$(EVENT_PARSE_VERSION): $(TE_IN)
- $(QUIET_LINK)$(CC) --shared $(LDFLAGS) $^ -Wl,-soname,libtraceevent.so.$(EP_VERSION) -o $@
- @ln -sf $(@F) $(OUTPUT)libtraceevent.so
- @ln -sf $(@F) $(OUTPUT)libtraceevent.so.$(EP_VERSION)
-
-$(OUTPUT)libtraceevent.a: $(TE_IN)
- $(QUIET_LINK)$(RM) $@; $(AR) rcs $@ $^
-
-$(OUTPUT)%.so: $(OUTPUT)%-in.o
- $(QUIET_LINK)$(CC) $(CFLAGS) -shared $(LDFLAGS) -nostartfiles -o $@ $^
-
-define make_version.h
- (echo '/* This file is automatically generated. Do not modify. */'; \
- echo \#define VERSION_CODE $(shell \
- expr $(VERSION) \* 256 + $(PATCHLEVEL)); \
- echo '#define EXTRAVERSION ' $(EXTRAVERSION); \
- echo '#define VERSION_STRING "'$(VERSION).$(PATCHLEVEL).$(EXTRAVERSION)'"'; \
- echo '#define FILE_VERSION '$(FILE_VERSION); \
- ) > $1
-endef
-
-define update_version.h
- ($(call make_version.h, $@.tmp); \
- if [ -r $@ ] && cmp -s $@ $@.tmp; then \
- rm -f $@.tmp; \
- else \
- echo ' UPDATE $@'; \
- mv -f $@.tmp $@; \
- fi);
-endef
-
-ep_version.h: force
- $(Q)$(N)$(call update_version.h)
-
-VERSION_FILES = ep_version.h
-
-define update_dir
- (echo $1 > $@.tmp; \
- if [ -r $@ ] && cmp -s $@ $@.tmp; then \
- rm -f $@.tmp; \
- else \
- echo ' UPDATE $@'; \
- mv -f $@.tmp $@; \
- fi);
-endef
-
-tags: force
- $(RM) tags
- find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \
- --regex-c++='/_PE\(([^,)]*).*/TEP_ERRNO__\1/'
-
-TAGS: force
- $(RM) TAGS
- find . -name '*.[ch]' | xargs etags \
- --regex='/_PE(\([^,)]*\).*/TEP_ERRNO__\1/'
-
-define do_install_mkdir
- if [ ! -d '$(DESTDIR_SQ)$1' ]; then \
- $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1'; \
- fi
-endef
-
-define do_install
- $(call do_install_mkdir,$2); \
- $(INSTALL) $(if $3,-m $3,) $1 '$(DESTDIR_SQ)$2'
-endef
-
-PKG_CONFIG_SOURCE_FILE = libtraceevent.pc
-PKG_CONFIG_FILE := $(addprefix $(OUTPUT),$(PKG_CONFIG_SOURCE_FILE))
-define do_install_pkgconfig_file
- if [ -n "${pkgconfig_dir}" ]; then \
- cp -f ${PKG_CONFIG_SOURCE_FILE}.template ${PKG_CONFIG_FILE}; \
- sed -i "s|INSTALL_PREFIX|${1}|g" ${PKG_CONFIG_FILE}; \
- sed -i "s|LIB_VERSION|${EVENT_PARSE_VERSION}|g" ${PKG_CONFIG_FILE}; \
- sed -i "s|LIB_DIR|${libdir}|g" ${PKG_CONFIG_FILE}; \
- sed -i "s|HEADER_DIR|$(includedir)|g" ${PKG_CONFIG_FILE}; \
- $(call do_install,$(PKG_CONFIG_FILE),$(pkgconfig_dir),644); \
- else \
- (echo Failed to locate pkg-config directory) 1>&2; \
- fi
-endef
-
-install_lib: all_cmd install_plugins install_headers install_pkgconfig
- $(call QUIET_INSTALL, $(LIB_TARGET)) \
- $(call do_install_mkdir,$(libdir_SQ)); \
- cp -fpR $(LIB_INSTALL) $(DESTDIR)$(libdir_SQ)
-
-install_pkgconfig:
- $(call QUIET_INSTALL, $(PKG_CONFIG_FILE)) \
- $(call do_install_pkgconfig_file,$(prefix))
-
-install_headers:
- $(call QUIET_INSTALL, traceevent_headers) \
- $(call do_install,event-parse.h,$(includedir_SQ),644); \
- $(call do_install,event-utils.h,$(includedir_SQ),644); \
- $(call do_install,trace-seq.h,$(includedir_SQ),644); \
- $(call do_install,kbuffer.h,$(includedir_SQ),644);
-
-install: install_lib
-
-clean: clean_plugins
- $(call QUIET_CLEAN, libtraceevent) \
- $(RM) *.o *~ $(TARGETS) *.a *.so $(VERSION_FILES) .*.d .*.cmd; \
- $(RM) TRACEEVENT-CFLAGS tags TAGS; \
- $(RM) $(PKG_CONFIG_FILE)
-
-PHONY += doc
-doc:
- $(call descend,Documentation)
-
-PHONY += doc-clean
-doc-clean:
- $(call descend,Documentation,clean)
-
-PHONY += doc-install
-doc-install:
- $(call descend,Documentation,install)
-
-PHONY += doc-uninstall
-doc-uninstall:
- $(call descend,Documentation,uninstall)
-
-PHONY += help
-help:
- @echo 'Possible targets:'
- @echo''
- @echo ' all - default, compile the library and the'\
- 'plugins'
- @echo ' plugins - compile the plugins'
- @echo ' install - install the library, the plugins,'\
- 'the header and pkgconfig files'
- @echo ' clean - clean the library and the plugins object files'
- @echo ' doc - compile the documentation files - man'\
- 'and html pages, in the Documentation directory'
- @echo ' doc-clean - clean the documentation files'
- @echo ' doc-install - install the man pages'
- @echo ' doc-uninstall - uninstall the man pages'
- @echo''
-
-PHONY += plugins
-plugins:
- $(call descend,plugins)
-
-PHONY += install_plugins
-install_plugins:
- $(call descend,plugins,install)
-
-PHONY += clean_plugins
-clean_plugins:
- $(call descend,plugins,clean)
-
-force:
-
-# Declare the contents of the .PHONY variable as phony. We keep that
-# information in a variable so we can use it in if_changed and friends.
-.PHONY: $(PHONY)
+++ /dev/null
-// SPDX-License-Identifier: LGPL-2.1
-/*
- * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
- *
- */
-
-#include "event-parse.h"
-#include "event-parse-local.h"
-#include "event-utils.h"
-
-/**
- * tep_get_event - returns the event with the given index
- * @tep: a handle to the tep_handle
- * @index: index of the requested event, in the range 0 .. nr_events
- *
- * This returns pointer to the element of the events array with the given index
- * If @tep is NULL, or @index is not in the range 0 .. nr_events, NULL is returned.
- */
-struct tep_event *tep_get_event(struct tep_handle *tep, int index)
-{
- if (tep && tep->events && index < tep->nr_events)
- return tep->events[index];
-
- return NULL;
-}
-
-/**
- * tep_get_first_event - returns the first event in the events array
- * @tep: a handle to the tep_handle
- *
- * This returns pointer to the first element of the events array
- * If @tep is NULL, NULL is returned.
- */
-struct tep_event *tep_get_first_event(struct tep_handle *tep)
-{
- return tep_get_event(tep, 0);
-}
-
-/**
- * tep_get_events_count - get the number of defined events
- * @tep: a handle to the tep_handle
- *
- * This returns number of elements in event array
- * If @tep is NULL, 0 is returned.
- */
-int tep_get_events_count(struct tep_handle *tep)
-{
- if (tep)
- return tep->nr_events;
- return 0;
-}
-
-/**
- * tep_set_flag - set event parser flag
- * @tep: a handle to the tep_handle
- * @flag: flag, or combination of flags to be set
- * can be any combination from enum tep_flag
- *
- * This sets a flag or combination of flags from enum tep_flag
- */
-void tep_set_flag(struct tep_handle *tep, int flag)
-{
- if (tep)
- tep->flags |= flag;
-}
-
-/**
- * tep_clear_flag - clear event parser flag
- * @tep: a handle to the tep_handle
- * @flag: flag to be cleared
- *
- * This clears a tep flag
- */
-void tep_clear_flag(struct tep_handle *tep, enum tep_flag flag)
-{
- if (tep)
- tep->flags &= ~flag;
-}
-
-/**
- * tep_test_flag - check the state of event parser flag
- * @tep: a handle to the tep_handle
- * @flag: flag to be checked
- *
- * This returns the state of the requested tep flag.
- * Returns: true if the flag is set, false otherwise.
- */
-bool tep_test_flag(struct tep_handle *tep, enum tep_flag flag)
-{
- if (tep)
- return tep->flags & flag;
- return false;
-}
-
-__hidden unsigned short data2host2(struct tep_handle *tep, unsigned short data)
-{
- unsigned short swap;
-
- if (!tep || tep->host_bigendian == tep->file_bigendian)
- return data;
-
- swap = ((data & 0xffULL) << 8) |
- ((data & (0xffULL << 8)) >> 8);
-
- return swap;
-}
-
-__hidden unsigned int data2host4(struct tep_handle *tep, unsigned int data)
-{
- unsigned int swap;
-
- if (!tep || tep->host_bigendian == tep->file_bigendian)
- return data;
-
- swap = ((data & 0xffULL) << 24) |
- ((data & (0xffULL << 8)) << 8) |
- ((data & (0xffULL << 16)) >> 8) |
- ((data & (0xffULL << 24)) >> 24);
-
- return swap;
-}
-
-__hidden unsigned long long
-data2host8(struct tep_handle *tep, unsigned long long data)
-{
- unsigned long long swap;
-
- if (!tep || tep->host_bigendian == tep->file_bigendian)
- return data;
-
- swap = ((data & 0xffULL) << 56) |
- ((data & (0xffULL << 8)) << 40) |
- ((data & (0xffULL << 16)) << 24) |
- ((data & (0xffULL << 24)) << 8) |
- ((data & (0xffULL << 32)) >> 8) |
- ((data & (0xffULL << 40)) >> 24) |
- ((data & (0xffULL << 48)) >> 40) |
- ((data & (0xffULL << 56)) >> 56);
-
- return swap;
-}
-
-/**
- * tep_get_header_page_size - get size of the header page
- * @tep: a handle to the tep_handle
- *
- * This returns size of the header page
- * If @tep is NULL, 0 is returned.
- */
-int tep_get_header_page_size(struct tep_handle *tep)
-{
- if (tep)
- return tep->header_page_size_size;
- return 0;
-}
-
-/**
- * tep_get_header_timestamp_size - get size of the timestamp in the header page
- * @tep: a handle to the tep_handle
- *
- * This returns size of the timestamp in the header page
- * If @tep is NULL, 0 is returned.
- */
-int tep_get_header_timestamp_size(struct tep_handle *tep)
-{
- if (tep)
- return tep->header_page_ts_size;
- return 0;
-}
-
-/**
- * tep_get_cpus - get the number of CPUs
- * @tep: a handle to the tep_handle
- *
- * This returns the number of CPUs
- * If @tep is NULL, 0 is returned.
- */
-int tep_get_cpus(struct tep_handle *tep)
-{
- if (tep)
- return tep->cpus;
- return 0;
-}
-
-/**
- * tep_set_cpus - set the number of CPUs
- * @tep: a handle to the tep_handle
- *
- * This sets the number of CPUs
- */
-void tep_set_cpus(struct tep_handle *tep, int cpus)
-{
- if (tep)
- tep->cpus = cpus;
-}
-
-/**
- * tep_get_long_size - get the size of a long integer on the traced machine
- * @tep: a handle to the tep_handle
- *
- * This returns the size of a long integer on the traced machine
- * If @tep is NULL, 0 is returned.
- */
-int tep_get_long_size(struct tep_handle *tep)
-{
- if (tep)
- return tep->long_size;
- return 0;
-}
-
-/**
- * tep_set_long_size - set the size of a long integer on the traced machine
- * @tep: a handle to the tep_handle
- * @size: size, in bytes, of a long integer
- *
- * This sets the size of a long integer on the traced machine
- */
-void tep_set_long_size(struct tep_handle *tep, int long_size)
-{
- if (tep)
- tep->long_size = long_size;
-}
-
-/**
- * tep_get_page_size - get the size of a memory page on the traced machine
- * @tep: a handle to the tep_handle
- *
- * This returns the size of a memory page on the traced machine
- * If @tep is NULL, 0 is returned.
- */
-int tep_get_page_size(struct tep_handle *tep)
-{
- if (tep)
- return tep->page_size;
- return 0;
-}
-
-/**
- * tep_set_page_size - set the size of a memory page on the traced machine
- * @tep: a handle to the tep_handle
- * @_page_size: size of a memory page, in bytes
- *
- * This sets the size of a memory page on the traced machine
- */
-void tep_set_page_size(struct tep_handle *tep, int _page_size)
-{
- if (tep)
- tep->page_size = _page_size;
-}
-
-/**
- * tep_is_file_bigendian - return the endian of the file
- * @tep: a handle to the tep_handle
- *
- * This returns true if the file is in big endian order
- * If @tep is NULL, false is returned.
- */
-bool tep_is_file_bigendian(struct tep_handle *tep)
-{
- if (tep)
- return (tep->file_bigendian == TEP_BIG_ENDIAN);
- return false;
-}
-
-/**
- * tep_set_file_bigendian - set if the file is in big endian order
- * @tep: a handle to the tep_handle
- * @endian: non zero, if the file is in big endian order
- *
- * This sets if the file is in big endian order
- */
-void tep_set_file_bigendian(struct tep_handle *tep, enum tep_endian endian)
-{
- if (tep)
- tep->file_bigendian = endian;
-}
-
-/**
- * tep_is_local_bigendian - return the endian of the saved local machine
- * @tep: a handle to the tep_handle
- *
- * This returns true if the saved local machine in @tep is big endian.
- * If @tep is NULL, false is returned.
- */
-bool tep_is_local_bigendian(struct tep_handle *tep)
-{
- if (tep)
- return (tep->host_bigendian == TEP_BIG_ENDIAN);
- return 0;
-}
-
-/**
- * tep_set_local_bigendian - set the stored local machine endian order
- * @tep: a handle to the tep_handle
- * @endian: non zero, if the local host has big endian order
- *
- * This sets the endian order for the local machine.
- */
-void tep_set_local_bigendian(struct tep_handle *tep, enum tep_endian endian)
-{
- if (tep)
- tep->host_bigendian = endian;
-}
-
-/**
- * tep_is_old_format - get if an old kernel is used
- * @tep: a handle to the tep_handle
- *
- * This returns true, if an old kernel is used to generate the tracing events or
- * false if a new kernel is used. Old kernels did not have header page info.
- * If @tep is NULL, false is returned.
- */
-bool tep_is_old_format(struct tep_handle *tep)
-{
- if (tep)
- return tep->old_format;
- return false;
-}
-
-/**
- * tep_set_test_filters - set a flag to test a filter string
- * @tep: a handle to the tep_handle
- * @test_filters: the new value of the test_filters flag
- *
- * This sets a flag to test a filter string. If this flag is set, when
- * tep_filter_add_filter_str() API as called,it will print the filter string
- * instead of adding it.
- */
-void tep_set_test_filters(struct tep_handle *tep, int test_filters)
-{
- if (tep)
- tep->test_filters = test_filters;
-}
+++ /dev/null
-// SPDX-License-Identifier: LGPL-2.1
-/*
- * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
- *
- */
-
-#ifndef _PARSE_EVENTS_INT_H
-#define _PARSE_EVENTS_INT_H
-
-struct tep_cmdline;
-struct cmdline_list;
-struct func_map;
-struct func_list;
-struct event_handler;
-struct func_resolver;
-struct tep_plugins_dir;
-
-#define __hidden __attribute__((visibility ("hidden")))
-
-struct tep_handle {
- int ref_count;
-
- int header_page_ts_offset;
- int header_page_ts_size;
- int header_page_size_offset;
- int header_page_size_size;
- int header_page_data_offset;
- int header_page_data_size;
- int header_page_overwrite;
-
- enum tep_endian file_bigendian;
- enum tep_endian host_bigendian;
-
- int old_format;
-
- int cpus;
- int long_size;
- int page_size;
-
- struct tep_cmdline *cmdlines;
- struct cmdline_list *cmdlist;
- int cmdline_count;
-
- struct func_map *func_map;
- struct func_resolver *func_resolver;
- struct func_list *funclist;
- unsigned int func_count;
-
- struct printk_map *printk_map;
- struct printk_list *printklist;
- unsigned int printk_count;
-
- struct tep_event **events;
- int nr_events;
- struct tep_event **sort_events;
- enum tep_event_sort_type last_type;
-
- int type_offset;
- int type_size;
-
- int pid_offset;
- int pid_size;
-
- int pc_offset;
- int pc_size;
-
- int flags_offset;
- int flags_size;
-
- int ld_offset;
- int ld_size;
-
- int test_filters;
-
- int flags;
-
- struct tep_format_field *bprint_ip_field;
- struct tep_format_field *bprint_fmt_field;
- struct tep_format_field *bprint_buf_field;
-
- struct event_handler *handlers;
- struct tep_function_handler *func_handlers;
-
- /* cache */
- struct tep_event *last_event;
-
- struct tep_plugins_dir *plugins_dir;
-};
-
-enum tep_print_parse_type {
- PRINT_FMT_STRING,
- PRINT_FMT_ARG_DIGIT,
- PRINT_FMT_ARG_POINTER,
- PRINT_FMT_ARG_STRING,
-};
-
-struct tep_print_parse {
- struct tep_print_parse *next;
-
- char *format;
- int ls;
- enum tep_print_parse_type type;
- struct tep_print_arg *arg;
- struct tep_print_arg *len_as_arg;
-};
-
-void free_tep_event(struct tep_event *event);
-void free_tep_format_field(struct tep_format_field *field);
-void free_tep_plugin_paths(struct tep_handle *tep);
-
-unsigned short data2host2(struct tep_handle *tep, unsigned short data);
-unsigned int data2host4(struct tep_handle *tep, unsigned int data);
-unsigned long long data2host8(struct tep_handle *tep, unsigned long long data);
-
-/* access to the internal parser */
-int peek_char(void);
-void init_input_buf(const char *buf, unsigned long long size);
-unsigned long long get_input_buf_ptr(void);
-const char *get_input_buf(void);
-enum tep_event_type read_token(char **tok);
-void free_token(char *tok);
-
-#endif /* _PARSE_EVENTS_INT_H */
+++ /dev/null
-// SPDX-License-Identifier: LGPL-2.1
-/*
- * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
- *
- *
- * The parts for function graph printing was taken and modified from the
- * Linux Kernel that were written by
- * - Copyright (C) 2009 Frederic Weisbecker,
- * Frederic Weisbecker gave his permission to relicense the code to
- * the Lesser General Public License.
- */
-#include <inttypes.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdarg.h>
-#include <ctype.h>
-#include <errno.h>
-#include <stdint.h>
-#include <limits.h>
-#include <linux/time64.h>
-
-#include <netinet/in.h>
-#include "event-parse.h"
-
-#include "event-parse-local.h"
-#include "event-utils.h"
-#include "trace-seq.h"
-
-static const char *input_buf;
-static unsigned long long input_buf_ptr;
-static unsigned long long input_buf_siz;
-
-static int is_flag_field;
-static int is_symbolic_field;
-
-static int show_warning = 1;
-
-#define do_warning(fmt, ...) \
- do { \
- if (show_warning) \
- warning(fmt, ##__VA_ARGS__); \
- } while (0)
-
-#define do_warning_event(event, fmt, ...) \
- do { \
- if (!show_warning) \
- continue; \
- \
- if (event) \
- warning("[%s:%s] " fmt, event->system, \
- event->name, ##__VA_ARGS__); \
- else \
- warning(fmt, ##__VA_ARGS__); \
- } while (0)
-
-/**
- * init_input_buf - init buffer for parsing
- * @buf: buffer to parse
- * @size: the size of the buffer
- *
- * Initializes the internal buffer that tep_read_token() will parse.
- */
-__hidden void init_input_buf(const char *buf, unsigned long long size)
-{
- input_buf = buf;
- input_buf_siz = size;
- input_buf_ptr = 0;
-}
-
-__hidden const char *get_input_buf(void)
-{
- return input_buf;
-}
-
-__hidden unsigned long long get_input_buf_ptr(void)
-{
- return input_buf_ptr;
-}
-
-struct event_handler {
- struct event_handler *next;
- int id;
- const char *sys_name;
- const char *event_name;
- tep_event_handler_func func;
- void *context;
-};
-
-struct func_params {
- struct func_params *next;
- enum tep_func_arg_type type;
-};
-
-struct tep_function_handler {
- struct tep_function_handler *next;
- enum tep_func_arg_type ret_type;
- char *name;
- tep_func_handler func;
- struct func_params *params;
- int nr_args;
-};
-
-static unsigned long long
-process_defined_func(struct trace_seq *s, void *data, int size,
- struct tep_event *event, struct tep_print_arg *arg);
-
-static void free_func_handle(struct tep_function_handler *func);
-
-void breakpoint(void)
-{
- static int x;
- x++;
-}
-
-static struct tep_print_arg *alloc_arg(void)
-{
- return calloc(1, sizeof(struct tep_print_arg));
-}
-
-struct tep_cmdline {
- char *comm;
- int pid;
-};
-
-static int cmdline_cmp(const void *a, const void *b)
-{
- const struct tep_cmdline *ca = a;
- const struct tep_cmdline *cb = b;
-
- if (ca->pid < cb->pid)
- return -1;
- if (ca->pid > cb->pid)
- return 1;
-
- return 0;
-}
-
-/* Looking for where to place the key */
-static int cmdline_slot_cmp(const void *a, const void *b)
-{
- const struct tep_cmdline *ca = a;
- const struct tep_cmdline *cb = b;
- const struct tep_cmdline *cb1 = cb + 1;
-
- if (ca->pid < cb->pid)
- return -1;
-
- if (ca->pid > cb->pid) {
- if (ca->pid <= cb1->pid)
- return 0;
- return 1;
- }
-
- return 0;
-}
-
-struct cmdline_list {
- struct cmdline_list *next;
- char *comm;
- int pid;
-};
-
-static int cmdline_init(struct tep_handle *tep)
-{
- struct cmdline_list *cmdlist = tep->cmdlist;
- struct cmdline_list *item;
- struct tep_cmdline *cmdlines;
- int i;
-
- cmdlines = malloc(sizeof(*cmdlines) * tep->cmdline_count);
- if (!cmdlines)
- return -1;
-
- i = 0;
- while (cmdlist) {
- cmdlines[i].pid = cmdlist->pid;
- cmdlines[i].comm = cmdlist->comm;
- i++;
- item = cmdlist;
- cmdlist = cmdlist->next;
- free(item);
- }
-
- qsort(cmdlines, tep->cmdline_count, sizeof(*cmdlines), cmdline_cmp);
-
- tep->cmdlines = cmdlines;
- tep->cmdlist = NULL;
-
- return 0;
-}
-
-static const char *find_cmdline(struct tep_handle *tep, int pid)
-{
- const struct tep_cmdline *comm;
- struct tep_cmdline key;
-
- if (!pid)
- return "<idle>";
-
- if (!tep->cmdlines && cmdline_init(tep))
- return "<not enough memory for cmdlines!>";
-
- key.pid = pid;
-
- comm = bsearch(&key, tep->cmdlines, tep->cmdline_count,
- sizeof(*tep->cmdlines), cmdline_cmp);
-
- if (comm)
- return comm->comm;
- return "<...>";
-}
-
-/**
- * tep_is_pid_registered - return if a pid has a cmdline registered
- * @tep: a handle to the trace event parser context
- * @pid: The pid to check if it has a cmdline registered with.
- *
- * Returns true if the pid has a cmdline mapped to it
- * false otherwise.
- */
-bool tep_is_pid_registered(struct tep_handle *tep, int pid)
-{
- const struct tep_cmdline *comm;
- struct tep_cmdline key;
-
- if (!pid)
- return true;
-
- if (!tep->cmdlines && cmdline_init(tep))
- return false;
-
- key.pid = pid;
-
- comm = bsearch(&key, tep->cmdlines, tep->cmdline_count,
- sizeof(*tep->cmdlines), cmdline_cmp);
-
- if (comm)
- return true;
- return false;
-}
-
-/*
- * If the command lines have been converted to an array, then
- * we must add this pid. This is much slower than when cmdlines
- * are added before the array is initialized.
- */
-static int add_new_comm(struct tep_handle *tep,
- const char *comm, int pid, bool override)
-{
- struct tep_cmdline *cmdlines = tep->cmdlines;
- struct tep_cmdline *cmdline;
- struct tep_cmdline key;
- char *new_comm;
- int cnt;
-
- if (!pid)
- return 0;
-
- /* avoid duplicates */
- key.pid = pid;
-
- cmdline = bsearch(&key, tep->cmdlines, tep->cmdline_count,
- sizeof(*tep->cmdlines), cmdline_cmp);
- if (cmdline) {
- if (!override) {
- errno = EEXIST;
- return -1;
- }
- new_comm = strdup(comm);
- if (!new_comm) {
- errno = ENOMEM;
- return -1;
- }
- free(cmdline->comm);
- cmdline->comm = new_comm;
-
- return 0;
- }
-
- cmdlines = realloc(cmdlines, sizeof(*cmdlines) * (tep->cmdline_count + 1));
- if (!cmdlines) {
- errno = ENOMEM;
- return -1;
- }
- tep->cmdlines = cmdlines;
-
- key.comm = strdup(comm);
- if (!key.comm) {
- errno = ENOMEM;
- return -1;
- }
-
- if (!tep->cmdline_count) {
- /* no entries yet */
- tep->cmdlines[0] = key;
- tep->cmdline_count++;
- return 0;
- }
-
- /* Now find where we want to store the new cmdline */
- cmdline = bsearch(&key, tep->cmdlines, tep->cmdline_count - 1,
- sizeof(*tep->cmdlines), cmdline_slot_cmp);
-
- cnt = tep->cmdline_count;
- if (cmdline) {
- /* cmdline points to the one before the spot we want */
- cmdline++;
- cnt -= cmdline - tep->cmdlines;
-
- } else {
- /* The new entry is either before or after the list */
- if (key.pid > tep->cmdlines[tep->cmdline_count - 1].pid) {
- tep->cmdlines[tep->cmdline_count++] = key;
- return 0;
- }
- cmdline = &tep->cmdlines[0];
- }
- memmove(cmdline + 1, cmdline, (cnt * sizeof(*cmdline)));
- *cmdline = key;
-
- tep->cmdline_count++;
-
- return 0;
-}
-
-static int _tep_register_comm(struct tep_handle *tep,
- const char *comm, int pid, bool override)
-{
- struct cmdline_list *item;
-
- if (tep->cmdlines)
- return add_new_comm(tep, comm, pid, override);
-
- item = malloc(sizeof(*item));
- if (!item)
- return -1;
-
- if (comm)
- item->comm = strdup(comm);
- else
- item->comm = strdup("<...>");
- if (!item->comm) {
- free(item);
- return -1;
- }
- item->pid = pid;
- item->next = tep->cmdlist;
-
- tep->cmdlist = item;
- tep->cmdline_count++;
-
- return 0;
-}
-
-/**
- * tep_register_comm - register a pid / comm mapping
- * @tep: a handle to the trace event parser context
- * @comm: the command line to register
- * @pid: the pid to map the command line to
- *
- * This adds a mapping to search for command line names with
- * a given pid. The comm is duplicated. If a command with the same pid
- * already exist, -1 is returned and errno is set to EEXIST
- */
-int tep_register_comm(struct tep_handle *tep, const char *comm, int pid)
-{
- return _tep_register_comm(tep, comm, pid, false);
-}
-
-/**
- * tep_override_comm - register a pid / comm mapping
- * @tep: a handle to the trace event parser context
- * @comm: the command line to register
- * @pid: the pid to map the command line to
- *
- * This adds a mapping to search for command line names with
- * a given pid. The comm is duplicated. If a command with the same pid
- * already exist, the command string is udapted with the new one
- */
-int tep_override_comm(struct tep_handle *tep, const char *comm, int pid)
-{
- if (!tep->cmdlines && cmdline_init(tep)) {
- errno = ENOMEM;
- return -1;
- }
- return _tep_register_comm(tep, comm, pid, true);
-}
-
-struct func_map {
- unsigned long long addr;
- char *func;
- char *mod;
-};
-
-struct func_list {
- struct func_list *next;
- unsigned long long addr;
- char *func;
- char *mod;
-};
-
-static int func_cmp(const void *a, const void *b)
-{
- const struct func_map *fa = a;
- const struct func_map *fb = b;
-
- if (fa->addr < fb->addr)
- return -1;
- if (fa->addr > fb->addr)
- return 1;
-
- return 0;
-}
-
-/*
- * We are searching for a record in between, not an exact
- * match.
- */
-static int func_bcmp(const void *a, const void *b)
-{
- const struct func_map *fa = a;
- const struct func_map *fb = b;
-
- if ((fa->addr == fb->addr) ||
-
- (fa->addr > fb->addr &&
- fa->addr < (fb+1)->addr))
- return 0;
-
- if (fa->addr < fb->addr)
- return -1;
-
- return 1;
-}
-
-static int func_map_init(struct tep_handle *tep)
-{
- struct func_list *funclist;
- struct func_list *item;
- struct func_map *func_map;
- int i;
-
- func_map = malloc(sizeof(*func_map) * (tep->func_count + 1));
- if (!func_map)
- return -1;
-
- funclist = tep->funclist;
-
- i = 0;
- while (funclist) {
- func_map[i].func = funclist->func;
- func_map[i].addr = funclist->addr;
- func_map[i].mod = funclist->mod;
- i++;
- item = funclist;
- funclist = funclist->next;
- free(item);
- }
-
- qsort(func_map, tep->func_count, sizeof(*func_map), func_cmp);
-
- /*
- * Add a special record at the end.
- */
- func_map[tep->func_count].func = NULL;
- func_map[tep->func_count].addr = 0;
- func_map[tep->func_count].mod = NULL;
-
- tep->func_map = func_map;
- tep->funclist = NULL;
-
- return 0;
-}
-
-static struct func_map *
-__find_func(struct tep_handle *tep, unsigned long long addr)
-{
- struct func_map *func;
- struct func_map key;
-
- if (!tep->func_map)
- func_map_init(tep);
-
- key.addr = addr;
-
- func = bsearch(&key, tep->func_map, tep->func_count,
- sizeof(*tep->func_map), func_bcmp);
-
- return func;
-}
-
-struct func_resolver {
- tep_func_resolver_t *func;
- void *priv;
- struct func_map map;
-};
-
-/**
- * tep_set_function_resolver - set an alternative function resolver
- * @tep: a handle to the trace event parser context
- * @resolver: function to be used
- * @priv: resolver function private state.
- *
- * Some tools may have already a way to resolve kernel functions, allow them to
- * keep using it instead of duplicating all the entries inside tep->funclist.
- */
-int tep_set_function_resolver(struct tep_handle *tep,
- tep_func_resolver_t *func, void *priv)
-{
- struct func_resolver *resolver = malloc(sizeof(*resolver));
-
- if (resolver == NULL)
- return -1;
-
- resolver->func = func;
- resolver->priv = priv;
-
- free(tep->func_resolver);
- tep->func_resolver = resolver;
-
- return 0;
-}
-
-/**
- * tep_reset_function_resolver - reset alternative function resolver
- * @tep: a handle to the trace event parser context
- *
- * Stop using whatever alternative resolver was set, use the default
- * one instead.
- */
-void tep_reset_function_resolver(struct tep_handle *tep)
-{
- free(tep->func_resolver);
- tep->func_resolver = NULL;
-}
-
-static struct func_map *
-find_func(struct tep_handle *tep, unsigned long long addr)
-{
- struct func_map *map;
-
- if (!tep->func_resolver)
- return __find_func(tep, addr);
-
- map = &tep->func_resolver->map;
- map->mod = NULL;
- map->addr = addr;
- map->func = tep->func_resolver->func(tep->func_resolver->priv,
- &map->addr, &map->mod);
- if (map->func == NULL)
- return NULL;
-
- return map;
-}
-
-/**
- * tep_find_function - find a function by a given address
- * @tep: a handle to the trace event parser context
- * @addr: the address to find the function with
- *
- * Returns a pointer to the function stored that has the given
- * address. Note, the address does not have to be exact, it
- * will select the function that would contain the address.
- */
-const char *tep_find_function(struct tep_handle *tep, unsigned long long addr)
-{
- struct func_map *map;
-
- map = find_func(tep, addr);
- if (!map)
- return NULL;
-
- return map->func;
-}
-
-/**
- * tep_find_function_address - find a function address by a given address
- * @tep: a handle to the trace event parser context
- * @addr: the address to find the function with
- *
- * Returns the address the function starts at. This can be used in
- * conjunction with tep_find_function to print both the function
- * name and the function offset.
- */
-unsigned long long
-tep_find_function_address(struct tep_handle *tep, unsigned long long addr)
-{
- struct func_map *map;
-
- map = find_func(tep, addr);
- if (!map)
- return 0;
-
- return map->addr;
-}
-
-/**
- * tep_register_function - register a function with a given address
- * @tep: a handle to the trace event parser context
- * @function: the function name to register
- * @addr: the address the function starts at
- * @mod: the kernel module the function may be in (NULL for none)
- *
- * This registers a function name with an address and module.
- * The @func passed in is duplicated.
- */
-int tep_register_function(struct tep_handle *tep, char *func,
- unsigned long long addr, char *mod)
-{
- struct func_list *item = malloc(sizeof(*item));
-
- if (!item)
- return -1;
-
- item->next = tep->funclist;
- item->func = strdup(func);
- if (!item->func)
- goto out_free;
-
- if (mod) {
- item->mod = strdup(mod);
- if (!item->mod)
- goto out_free_func;
- } else
- item->mod = NULL;
- item->addr = addr;
-
- tep->funclist = item;
- tep->func_count++;
-
- return 0;
-
-out_free_func:
- free(item->func);
- item->func = NULL;
-out_free:
- free(item);
- errno = ENOMEM;
- return -1;
-}
-
-/**
- * tep_print_funcs - print out the stored functions
- * @tep: a handle to the trace event parser context
- *
- * This prints out the stored functions.
- */
-void tep_print_funcs(struct tep_handle *tep)
-{
- int i;
-
- if (!tep->func_map)
- func_map_init(tep);
-
- for (i = 0; i < (int)tep->func_count; i++) {
- printf("%016llx %s",
- tep->func_map[i].addr,
- tep->func_map[i].func);
- if (tep->func_map[i].mod)
- printf(" [%s]\n", tep->func_map[i].mod);
- else
- printf("\n");
- }
-}
-
-struct printk_map {
- unsigned long long addr;
- char *printk;
-};
-
-struct printk_list {
- struct printk_list *next;
- unsigned long long addr;
- char *printk;
-};
-
-static int printk_cmp(const void *a, const void *b)
-{
- const struct printk_map *pa = a;
- const struct printk_map *pb = b;
-
- if (pa->addr < pb->addr)
- return -1;
- if (pa->addr > pb->addr)
- return 1;
-
- return 0;
-}
-
-static int printk_map_init(struct tep_handle *tep)
-{
- struct printk_list *printklist;
- struct printk_list *item;
- struct printk_map *printk_map;
- int i;
-
- printk_map = malloc(sizeof(*printk_map) * (tep->printk_count + 1));
- if (!printk_map)
- return -1;
-
- printklist = tep->printklist;
-
- i = 0;
- while (printklist) {
- printk_map[i].printk = printklist->printk;
- printk_map[i].addr = printklist->addr;
- i++;
- item = printklist;
- printklist = printklist->next;
- free(item);
- }
-
- qsort(printk_map, tep->printk_count, sizeof(*printk_map), printk_cmp);
-
- tep->printk_map = printk_map;
- tep->printklist = NULL;
-
- return 0;
-}
-
-static struct printk_map *
-find_printk(struct tep_handle *tep, unsigned long long addr)
-{
- struct printk_map *printk;
- struct printk_map key;
-
- if (!tep->printk_map && printk_map_init(tep))
- return NULL;
-
- key.addr = addr;
-
- printk = bsearch(&key, tep->printk_map, tep->printk_count,
- sizeof(*tep->printk_map), printk_cmp);
-
- return printk;
-}
-
-/**
- * tep_register_print_string - register a string by its address
- * @tep: a handle to the trace event parser context
- * @fmt: the string format to register
- * @addr: the address the string was located at
- *
- * This registers a string by the address it was stored in the kernel.
- * The @fmt passed in is duplicated.
- */
-int tep_register_print_string(struct tep_handle *tep, const char *fmt,
- unsigned long long addr)
-{
- struct printk_list *item = malloc(sizeof(*item));
- char *p;
-
- if (!item)
- return -1;
-
- item->next = tep->printklist;
- item->addr = addr;
-
- /* Strip off quotes and '\n' from the end */
- if (fmt[0] == '"')
- fmt++;
- item->printk = strdup(fmt);
- if (!item->printk)
- goto out_free;
-
- p = item->printk + strlen(item->printk) - 1;
- if (*p == '"')
- *p = 0;
-
- p -= 2;
- if (strcmp(p, "\\n") == 0)
- *p = 0;
-
- tep->printklist = item;
- tep->printk_count++;
-
- return 0;
-
-out_free:
- free(item);
- errno = ENOMEM;
- return -1;
-}
-
-/**
- * tep_print_printk - print out the stored strings
- * @tep: a handle to the trace event parser context
- *
- * This prints the string formats that were stored.
- */
-void tep_print_printk(struct tep_handle *tep)
-{
- int i;
-
- if (!tep->printk_map)
- printk_map_init(tep);
-
- for (i = 0; i < (int)tep->printk_count; i++) {
- printf("%016llx %s\n",
- tep->printk_map[i].addr,
- tep->printk_map[i].printk);
- }
-}
-
-static struct tep_event *alloc_event(void)
-{
- return calloc(1, sizeof(struct tep_event));
-}
-
-static int add_event(struct tep_handle *tep, struct tep_event *event)
-{
- int i;
- struct tep_event **events = realloc(tep->events, sizeof(event) *
- (tep->nr_events + 1));
- if (!events)
- return -1;
-
- tep->events = events;
-
- for (i = 0; i < tep->nr_events; i++) {
- if (tep->events[i]->id > event->id)
- break;
- }
- if (i < tep->nr_events)
- memmove(&tep->events[i + 1],
- &tep->events[i],
- sizeof(event) * (tep->nr_events - i));
-
- tep->events[i] = event;
- tep->nr_events++;
-
- event->tep = tep;
-
- return 0;
-}
-
-static int event_item_type(enum tep_event_type type)
-{
- switch (type) {
- case TEP_EVENT_ITEM ... TEP_EVENT_SQUOTE:
- return 1;
- case TEP_EVENT_ERROR ... TEP_EVENT_DELIM:
- default:
- return 0;
- }
-}
-
-static void free_flag_sym(struct tep_print_flag_sym *fsym)
-{
- struct tep_print_flag_sym *next;
-
- while (fsym) {
- next = fsym->next;
- free(fsym->value);
- free(fsym->str);
- free(fsym);
- fsym = next;
- }
-}
-
-static void free_arg(struct tep_print_arg *arg)
-{
- struct tep_print_arg *farg;
-
- if (!arg)
- return;
-
- switch (arg->type) {
- case TEP_PRINT_ATOM:
- free(arg->atom.atom);
- break;
- case TEP_PRINT_FIELD:
- free(arg->field.name);
- break;
- case TEP_PRINT_FLAGS:
- free_arg(arg->flags.field);
- free(arg->flags.delim);
- free_flag_sym(arg->flags.flags);
- break;
- case TEP_PRINT_SYMBOL:
- free_arg(arg->symbol.field);
- free_flag_sym(arg->symbol.symbols);
- break;
- case TEP_PRINT_HEX:
- case TEP_PRINT_HEX_STR:
- free_arg(arg->hex.field);
- free_arg(arg->hex.size);
- break;
- case TEP_PRINT_INT_ARRAY:
- free_arg(arg->int_array.field);
- free_arg(arg->int_array.count);
- free_arg(arg->int_array.el_size);
- break;
- case TEP_PRINT_TYPE:
- free(arg->typecast.type);
- free_arg(arg->typecast.item);
- break;
- case TEP_PRINT_STRING:
- case TEP_PRINT_BSTRING:
- free(arg->string.string);
- break;
- case TEP_PRINT_BITMASK:
- free(arg->bitmask.bitmask);
- break;
- case TEP_PRINT_DYNAMIC_ARRAY:
- case TEP_PRINT_DYNAMIC_ARRAY_LEN:
- free(arg->dynarray.index);
- break;
- case TEP_PRINT_OP:
- free(arg->op.op);
- free_arg(arg->op.left);
- free_arg(arg->op.right);
- break;
- case TEP_PRINT_FUNC:
- while (arg->func.args) {
- farg = arg->func.args;
- arg->func.args = farg->next;
- free_arg(farg);
- }
- break;
-
- case TEP_PRINT_NULL:
- default:
- break;
- }
-
- free(arg);
-}
-
-static enum tep_event_type get_type(int ch)
-{
- if (ch == '\n')
- return TEP_EVENT_NEWLINE;
- if (isspace(ch))
- return TEP_EVENT_SPACE;
- if (isalnum(ch) || ch == '_')
- return TEP_EVENT_ITEM;
- if (ch == '\'')
- return TEP_EVENT_SQUOTE;
- if (ch == '"')
- return TEP_EVENT_DQUOTE;
- if (!isprint(ch))
- return TEP_EVENT_NONE;
- if (ch == '(' || ch == ')' || ch == ',')
- return TEP_EVENT_DELIM;
-
- return TEP_EVENT_OP;
-}
-
-static int __read_char(void)
-{
- if (input_buf_ptr >= input_buf_siz)
- return -1;
-
- return input_buf[input_buf_ptr++];
-}
-
-/**
- * peek_char - peek at the next character that will be read
- *
- * Returns the next character read, or -1 if end of buffer.
- */
-__hidden int peek_char(void)
-{
- if (input_buf_ptr >= input_buf_siz)
- return -1;
-
- return input_buf[input_buf_ptr];
-}
-
-static int extend_token(char **tok, char *buf, int size)
-{
- char *newtok = realloc(*tok, size);
-
- if (!newtok) {
- free(*tok);
- *tok = NULL;
- return -1;
- }
-
- if (!*tok)
- strcpy(newtok, buf);
- else
- strcat(newtok, buf);
- *tok = newtok;
-
- return 0;
-}
-
-static enum tep_event_type force_token(const char *str, char **tok);
-
-static enum tep_event_type __read_token(char **tok)
-{
- char buf[BUFSIZ];
- int ch, last_ch, quote_ch, next_ch;
- int i = 0;
- int tok_size = 0;
- enum tep_event_type type;
-
- *tok = NULL;
-
-
- ch = __read_char();
- if (ch < 0)
- return TEP_EVENT_NONE;
-
- type = get_type(ch);
- if (type == TEP_EVENT_NONE)
- return type;
-
- buf[i++] = ch;
-
- switch (type) {
- case TEP_EVENT_NEWLINE:
- case TEP_EVENT_DELIM:
- if (asprintf(tok, "%c", ch) < 0)
- return TEP_EVENT_ERROR;
-
- return type;
-
- case TEP_EVENT_OP:
- switch (ch) {
- case '-':
- next_ch = peek_char();
- if (next_ch == '>') {
- buf[i++] = __read_char();
- break;
- }
- /* fall through */
- case '+':
- case '|':
- case '&':
- case '>':
- case '<':
- last_ch = ch;
- ch = peek_char();
- if (ch != last_ch)
- goto test_equal;
- buf[i++] = __read_char();
- switch (last_ch) {
- case '>':
- case '<':
- goto test_equal;
- default:
- break;
- }
- break;
- case '!':
- case '=':
- goto test_equal;
- default: /* what should we do instead? */
- break;
- }
- buf[i] = 0;
- *tok = strdup(buf);
- return type;
-
- test_equal:
- ch = peek_char();
- if (ch == '=')
- buf[i++] = __read_char();
- goto out;
-
- case TEP_EVENT_DQUOTE:
- case TEP_EVENT_SQUOTE:
- /* don't keep quotes */
- i--;
- quote_ch = ch;
- last_ch = 0;
- concat:
- do {
- if (i == (BUFSIZ - 1)) {
- buf[i] = 0;
- tok_size += BUFSIZ;
-
- if (extend_token(tok, buf, tok_size) < 0)
- return TEP_EVENT_NONE;
- i = 0;
- }
- last_ch = ch;
- ch = __read_char();
- buf[i++] = ch;
- /* the '\' '\' will cancel itself */
- if (ch == '\\' && last_ch == '\\')
- last_ch = 0;
- } while (ch != quote_ch || last_ch == '\\');
- /* remove the last quote */
- i--;
-
- /*
- * For strings (double quotes) check the next token.
- * If it is another string, concatinate the two.
- */
- if (type == TEP_EVENT_DQUOTE) {
- unsigned long long save_input_buf_ptr = input_buf_ptr;
-
- do {
- ch = __read_char();
- } while (isspace(ch));
- if (ch == '"')
- goto concat;
- input_buf_ptr = save_input_buf_ptr;
- }
-
- goto out;
-
- case TEP_EVENT_ERROR ... TEP_EVENT_SPACE:
- case TEP_EVENT_ITEM:
- default:
- break;
- }
-
- while (get_type(peek_char()) == type) {
- if (i == (BUFSIZ - 1)) {
- buf[i] = 0;
- tok_size += BUFSIZ;
-
- if (extend_token(tok, buf, tok_size) < 0)
- return TEP_EVENT_NONE;
- i = 0;
- }
- ch = __read_char();
- buf[i++] = ch;
- }
-
- out:
- buf[i] = 0;
- if (extend_token(tok, buf, tok_size + i + 1) < 0)
- return TEP_EVENT_NONE;
-
- if (type == TEP_EVENT_ITEM) {
- /*
- * Older versions of the kernel has a bug that
- * creates invalid symbols and will break the mac80211
- * parsing. This is a work around to that bug.
- *
- * See Linux kernel commit:
- * 811cb50baf63461ce0bdb234927046131fc7fa8b
- */
- if (strcmp(*tok, "LOCAL_PR_FMT") == 0) {
- free(*tok);
- *tok = NULL;
- return force_token("\"%s\" ", tok);
- } else if (strcmp(*tok, "STA_PR_FMT") == 0) {
- free(*tok);
- *tok = NULL;
- return force_token("\" sta:%pM\" ", tok);
- } else if (strcmp(*tok, "VIF_PR_FMT") == 0) {
- free(*tok);
- *tok = NULL;
- return force_token("\" vif:%p(%d)\" ", tok);
- }
- }
-
- return type;
-}
-
-static enum tep_event_type force_token(const char *str, char **tok)
-{
- const char *save_input_buf;
- unsigned long long save_input_buf_ptr;
- unsigned long long save_input_buf_siz;
- enum tep_event_type type;
-
- /* save off the current input pointers */
- save_input_buf = input_buf;
- save_input_buf_ptr = input_buf_ptr;
- save_input_buf_siz = input_buf_siz;
-
- init_input_buf(str, strlen(str));
-
- type = __read_token(tok);
-
- /* reset back to original token */
- input_buf = save_input_buf;
- input_buf_ptr = save_input_buf_ptr;
- input_buf_siz = save_input_buf_siz;
-
- return type;
-}
-
-/**
- * free_token - free a token returned by tep_read_token
- * @token: the token to free
- */
-__hidden void free_token(char *tok)
-{
- if (tok)
- free(tok);
-}
-
-/**
- * read_token - access to utilities to use the tep parser
- * @tok: The token to return
- *
- * This will parse tokens from the string given by
- * tep_init_data().
- *
- * Returns the token type.
- */
-__hidden enum tep_event_type read_token(char **tok)
-{
- enum tep_event_type type;
-
- for (;;) {
- type = __read_token(tok);
- if (type != TEP_EVENT_SPACE)
- return type;
-
- free_token(*tok);
- }
-
- /* not reached */
- *tok = NULL;
- return TEP_EVENT_NONE;
-}
-
-/* no newline */
-static enum tep_event_type read_token_item(char **tok)
-{
- enum tep_event_type type;
-
- for (;;) {
- type = __read_token(tok);
- if (type != TEP_EVENT_SPACE && type != TEP_EVENT_NEWLINE)
- return type;
- free_token(*tok);
- *tok = NULL;
- }
-
- /* not reached */
- *tok = NULL;
- return TEP_EVENT_NONE;
-}
-
-static int test_type(enum tep_event_type type, enum tep_event_type expect)
-{
- if (type != expect) {
- do_warning("Error: expected type %d but read %d",
- expect, type);
- return -1;
- }
- return 0;
-}
-
-static int test_type_token(enum tep_event_type type, const char *token,
- enum tep_event_type expect, const char *expect_tok)
-{
- if (type != expect) {
- do_warning("Error: expected type %d but read %d",
- expect, type);
- return -1;
- }
-
- if (strcmp(token, expect_tok) != 0) {
- do_warning("Error: expected '%s' but read '%s'",
- expect_tok, token);
- return -1;
- }
- return 0;
-}
-
-static int __read_expect_type(enum tep_event_type expect, char **tok, int newline_ok)
-{
- enum tep_event_type type;
-
- if (newline_ok)
- type = read_token(tok);
- else
- type = read_token_item(tok);
- return test_type(type, expect);
-}
-
-static int read_expect_type(enum tep_event_type expect, char **tok)
-{
- return __read_expect_type(expect, tok, 1);
-}
-
-static int __read_expected(enum tep_event_type expect, const char *str,
- int newline_ok)
-{
- enum tep_event_type type;
- char *token;
- int ret;
-
- if (newline_ok)
- type = read_token(&token);
- else
- type = read_token_item(&token);
-
- ret = test_type_token(type, token, expect, str);
-
- free_token(token);
-
- return ret;
-}
-
-static int read_expected(enum tep_event_type expect, const char *str)
-{
- return __read_expected(expect, str, 1);
-}
-
-static int read_expected_item(enum tep_event_type expect, const char *str)
-{
- return __read_expected(expect, str, 0);
-}
-
-static char *event_read_name(void)
-{
- char *token;
-
- if (read_expected(TEP_EVENT_ITEM, "name") < 0)
- return NULL;
-
- if (read_expected(TEP_EVENT_OP, ":") < 0)
- return NULL;
-
- if (read_expect_type(TEP_EVENT_ITEM, &token) < 0)
- goto fail;
-
- return token;
-
- fail:
- free_token(token);
- return NULL;
-}
-
-static int event_read_id(void)
-{
- char *token;
- int id;
-
- if (read_expected_item(TEP_EVENT_ITEM, "ID") < 0)
- return -1;
-
- if (read_expected(TEP_EVENT_OP, ":") < 0)
- return -1;
-
- if (read_expect_type(TEP_EVENT_ITEM, &token) < 0)
- goto fail;
-
- id = strtoul(token, NULL, 0);
- free_token(token);
- return id;
-
- fail:
- free_token(token);
- return -1;
-}
-
-static int field_is_string(struct tep_format_field *field)
-{
- if ((field->flags & TEP_FIELD_IS_ARRAY) &&
- (strstr(field->type, "char") || strstr(field->type, "u8") ||
- strstr(field->type, "s8")))
- return 1;
-
- return 0;
-}
-
-static int field_is_dynamic(struct tep_format_field *field)
-{
- if (strncmp(field->type, "__data_loc", 10) == 0)
- return 1;
-
- return 0;
-}
-
-static int field_is_relative_dynamic(struct tep_format_field *field)
-{
- if (strncmp(field->type, "__rel_loc", 9) == 0)
- return 1;
-
- return 0;
-}
-
-static int field_is_long(struct tep_format_field *field)
-{
- /* includes long long */
- if (strstr(field->type, "long"))
- return 1;
-
- return 0;
-}
-
-static unsigned int type_size(const char *name)
-{
- /* This covers all TEP_FIELD_IS_STRING types. */
- static struct {
- const char *type;
- unsigned int size;
- } table[] = {
- { "u8", 1 },
- { "u16", 2 },
- { "u32", 4 },
- { "u64", 8 },
- { "s8", 1 },
- { "s16", 2 },
- { "s32", 4 },
- { "s64", 8 },
- { "char", 1 },
- { },
- };
- int i;
-
- for (i = 0; table[i].type; i++) {
- if (!strcmp(table[i].type, name))
- return table[i].size;
- }
-
- return 0;
-}
-
-static int append(char **buf, const char *delim, const char *str)
-{
- char *new_buf;
-
- new_buf = realloc(*buf, strlen(*buf) + strlen(delim) + strlen(str) + 1);
- if (!new_buf)
- return -1;
- strcat(new_buf, delim);
- strcat(new_buf, str);
- *buf = new_buf;
- return 0;
-}
-
-static int event_read_fields(struct tep_event *event, struct tep_format_field **fields)
-{
- struct tep_format_field *field = NULL;
- enum tep_event_type type;
- char *token;
- char *last_token;
- char *delim = " ";
- int count = 0;
- int ret;
-
- do {
- unsigned int size_dynamic = 0;
-
- type = read_token(&token);
- if (type == TEP_EVENT_NEWLINE) {
- free_token(token);
- return count;
- }
-
- count++;
-
- if (test_type_token(type, token, TEP_EVENT_ITEM, "field"))
- goto fail;
- free_token(token);
-
- type = read_token(&token);
- /*
- * The ftrace fields may still use the "special" name.
- * Just ignore it.
- */
- if (event->flags & TEP_EVENT_FL_ISFTRACE &&
- type == TEP_EVENT_ITEM && strcmp(token, "special") == 0) {
- free_token(token);
- type = read_token(&token);
- }
-
- if (test_type_token(type, token, TEP_EVENT_OP, ":") < 0)
- goto fail;
-
- free_token(token);
- if (read_expect_type(TEP_EVENT_ITEM, &token) < 0)
- goto fail;
-
- last_token = token;
-
- field = calloc(1, sizeof(*field));
- if (!field)
- goto fail;
-
- field->event = event;
-
- /* read the rest of the type */
- for (;;) {
- type = read_token(&token);
- if (type == TEP_EVENT_ITEM ||
- (type == TEP_EVENT_OP && strcmp(token, "*") == 0) ||
- /*
- * Some of the ftrace fields are broken and have
- * an illegal "." in them.
- */
- (event->flags & TEP_EVENT_FL_ISFTRACE &&
- type == TEP_EVENT_OP && strcmp(token, ".") == 0)) {
-
- if (strcmp(token, "*") == 0)
- field->flags |= TEP_FIELD_IS_POINTER;
-
- if (field->type) {
- ret = append(&field->type, delim, last_token);
- free(last_token);
- if (ret < 0)
- goto fail;
- } else
- field->type = last_token;
- last_token = token;
- delim = " ";
- continue;
- }
-
- /* Handle __attribute__((user)) */
- if ((type == TEP_EVENT_DELIM) &&
- strcmp("__attribute__", last_token) == 0 &&
- token[0] == '(') {
- int depth = 1;
- int ret;
-
- ret = append(&field->type, " ", last_token);
- ret |= append(&field->type, "", "(");
- if (ret < 0)
- goto fail;
-
- delim = " ";
- while ((type = read_token(&token)) != TEP_EVENT_NONE) {
- if (type == TEP_EVENT_DELIM) {
- if (token[0] == '(')
- depth++;
- else if (token[0] == ')')
- depth--;
- if (!depth)
- break;
- ret = append(&field->type, "", token);
- delim = "";
- } else {
- ret = append(&field->type, delim, token);
- delim = " ";
- }
- if (ret < 0)
- goto fail;
- free(last_token);
- last_token = token;
- }
- continue;
- }
- break;
- }
-
- if (!field->type) {
- do_warning_event(event, "%s: no type found", __func__);
- goto fail;
- }
- field->name = field->alias = last_token;
-
- if (test_type(type, TEP_EVENT_OP))
- goto fail;
-
- if (strcmp(token, "[") == 0) {
- enum tep_event_type last_type = type;
- char *brackets = token;
-
- field->flags |= TEP_FIELD_IS_ARRAY;
-
- type = read_token(&token);
-
- if (type == TEP_EVENT_ITEM)
- field->arraylen = strtoul(token, NULL, 0);
- else
- field->arraylen = 0;
-
- while (strcmp(token, "]") != 0) {
- const char *delim;
-
- if (last_type == TEP_EVENT_ITEM &&
- type == TEP_EVENT_ITEM)
- delim = " ";
- else
- delim = "";
-
- last_type = type;
-
- ret = append(&brackets, delim, token);
- if (ret < 0) {
- free(brackets);
- goto fail;
- }
- /* We only care about the last token */
- field->arraylen = strtoul(token, NULL, 0);
- free_token(token);
- type = read_token(&token);
- if (type == TEP_EVENT_NONE) {
- free(brackets);
- do_warning_event(event, "failed to find token");
- goto fail;
- }
- }
-
- free_token(token);
-
- ret = append(&brackets, "", "]");
- if (ret < 0) {
- free(brackets);
- goto fail;
- }
-
- /* add brackets to type */
-
- type = read_token(&token);
- /*
- * If the next token is not an OP, then it is of
- * the format: type [] item;
- */
- if (type == TEP_EVENT_ITEM) {
- ret = append(&field->type, " ", field->name);
- if (ret < 0) {
- free(brackets);
- goto fail;
- }
- ret = append(&field->type, "", brackets);
-
- size_dynamic = type_size(field->name);
- free_token(field->name);
- field->name = field->alias = token;
- type = read_token(&token);
- } else {
- ret = append(&field->type, "", brackets);
- if (ret < 0) {
- free(brackets);
- goto fail;
- }
- }
- free(brackets);
- }
-
- if (field_is_string(field))
- field->flags |= TEP_FIELD_IS_STRING;
- if (field_is_dynamic(field))
- field->flags |= TEP_FIELD_IS_DYNAMIC;
- if (field_is_relative_dynamic(field))
- field->flags |= TEP_FIELD_IS_DYNAMIC | TEP_FIELD_IS_RELATIVE;
- if (field_is_long(field))
- field->flags |= TEP_FIELD_IS_LONG;
-
- if (test_type_token(type, token, TEP_EVENT_OP, ";"))
- goto fail;
- free_token(token);
-
- if (read_expected(TEP_EVENT_ITEM, "offset") < 0)
- goto fail_expect;
-
- if (read_expected(TEP_EVENT_OP, ":") < 0)
- goto fail_expect;
-
- if (read_expect_type(TEP_EVENT_ITEM, &token))
- goto fail;
- field->offset = strtoul(token, NULL, 0);
- free_token(token);
-
- if (read_expected(TEP_EVENT_OP, ";") < 0)
- goto fail_expect;
-
- if (read_expected(TEP_EVENT_ITEM, "size") < 0)
- goto fail_expect;
-
- if (read_expected(TEP_EVENT_OP, ":") < 0)
- goto fail_expect;
-
- if (read_expect_type(TEP_EVENT_ITEM, &token))
- goto fail;
- field->size = strtoul(token, NULL, 0);
- free_token(token);
-
- if (read_expected(TEP_EVENT_OP, ";") < 0)
- goto fail_expect;
-
- type = read_token(&token);
- if (type != TEP_EVENT_NEWLINE) {
- /* newer versions of the kernel have a "signed" type */
- if (test_type_token(type, token, TEP_EVENT_ITEM, "signed"))
- goto fail;
-
- free_token(token);
-
- if (read_expected(TEP_EVENT_OP, ":") < 0)
- goto fail_expect;
-
- if (read_expect_type(TEP_EVENT_ITEM, &token))
- goto fail;
-
- if (strtoul(token, NULL, 0))
- field->flags |= TEP_FIELD_IS_SIGNED;
-
- free_token(token);
- if (read_expected(TEP_EVENT_OP, ";") < 0)
- goto fail_expect;
-
- if (read_expect_type(TEP_EVENT_NEWLINE, &token))
- goto fail;
- }
-
- free_token(token);
-
- if (field->flags & TEP_FIELD_IS_ARRAY) {
- if (field->arraylen)
- field->elementsize = field->size / field->arraylen;
- else if (field->flags & TEP_FIELD_IS_DYNAMIC)
- field->elementsize = size_dynamic;
- else if (field->flags & TEP_FIELD_IS_STRING)
- field->elementsize = 1;
- else if (field->flags & TEP_FIELD_IS_LONG)
- field->elementsize = event->tep ?
- event->tep->long_size :
- sizeof(long);
- } else
- field->elementsize = field->size;
-
- *fields = field;
- fields = &field->next;
-
- } while (1);
-
- return 0;
-
-fail:
- free_token(token);
-fail_expect:
- if (field) {
- free(field->type);
- free(field->name);
- free(field);
- }
- return -1;
-}
-
-static int event_read_format(struct tep_event *event)
-{
- char *token;
- int ret;
-
- if (read_expected_item(TEP_EVENT_ITEM, "format") < 0)
- return -1;
-
- if (read_expected(TEP_EVENT_OP, ":") < 0)
- return -1;
-
- if (read_expect_type(TEP_EVENT_NEWLINE, &token))
- goto fail;
- free_token(token);
-
- ret = event_read_fields(event, &event->format.common_fields);
- if (ret < 0)
- return ret;
- event->format.nr_common = ret;
-
- ret = event_read_fields(event, &event->format.fields);
- if (ret < 0)
- return ret;
- event->format.nr_fields = ret;
-
- return 0;
-
- fail:
- free_token(token);
- return -1;
-}
-
-static enum tep_event_type
-process_arg_token(struct tep_event *event, struct tep_print_arg *arg,
- char **tok, enum tep_event_type type);
-
-static enum tep_event_type
-process_arg(struct tep_event *event, struct tep_print_arg *arg, char **tok)
-{
- enum tep_event_type type;
- char *token;
-
- type = read_token(&token);
- *tok = token;
-
- return process_arg_token(event, arg, tok, type);
-}
-
-static enum tep_event_type
-process_op(struct tep_event *event, struct tep_print_arg *arg, char **tok);
-
-/*
- * For __print_symbolic() and __print_flags, we need to completely
- * evaluate the first argument, which defines what to print next.
- */
-static enum tep_event_type
-process_field_arg(struct tep_event *event, struct tep_print_arg *arg, char **tok)
-{
- enum tep_event_type type;
-
- type = process_arg(event, arg, tok);
-
- while (type == TEP_EVENT_OP) {
- type = process_op(event, arg, tok);
- }
-
- return type;
-}
-
-static enum tep_event_type
-process_cond(struct tep_event *event, struct tep_print_arg *top, char **tok)
-{
- struct tep_print_arg *arg, *left, *right;
- enum tep_event_type type;
- char *token = NULL;
-
- arg = alloc_arg();
- left = alloc_arg();
- right = alloc_arg();
-
- if (!arg || !left || !right) {
- do_warning_event(event, "%s: not enough memory!", __func__);
- /* arg will be freed at out_free */
- free_arg(left);
- free_arg(right);
- goto out_free;
- }
-
- arg->type = TEP_PRINT_OP;
- arg->op.left = left;
- arg->op.right = right;
-
- *tok = NULL;
- type = process_arg(event, left, &token);
-
- again:
- if (type == TEP_EVENT_ERROR)
- goto out_free;
-
- /* Handle other operations in the arguments */
- if (type == TEP_EVENT_OP && strcmp(token, ":") != 0) {
- type = process_op(event, left, &token);
- goto again;
- }
-
- if (test_type_token(type, token, TEP_EVENT_OP, ":"))
- goto out_free;
-
- arg->op.op = token;
-
- type = process_arg(event, right, &token);
-
- top->op.right = arg;
-
- *tok = token;
- return type;
-
-out_free:
- /* Top may point to itself */
- top->op.right = NULL;
- free_token(token);
- free_arg(arg);
- return TEP_EVENT_ERROR;
-}
-
-static enum tep_event_type
-process_array(struct tep_event *event, struct tep_print_arg *top, char **tok)
-{
- struct tep_print_arg *arg;
- enum tep_event_type type;
- char *token = NULL;
-
- arg = alloc_arg();
- if (!arg) {
- do_warning_event(event, "%s: not enough memory!", __func__);
- /* '*tok' is set to top->op.op. No need to free. */
- *tok = NULL;
- return TEP_EVENT_ERROR;
- }
-
- *tok = NULL;
- type = process_arg(event, arg, &token);
- if (test_type_token(type, token, TEP_EVENT_OP, "]"))
- goto out_free;
-
- top->op.right = arg;
-
- free_token(token);
- type = read_token_item(&token);
- *tok = token;
-
- return type;
-
-out_free:
- free_token(token);
- free_arg(arg);
- return TEP_EVENT_ERROR;
-}
-
-static int get_op_prio(char *op)
-{
- if (!op[1]) {
- switch (op[0]) {
- case '~':
- case '!':
- return 4;
- case '*':
- case '/':
- case '%':
- return 6;
- case '+':
- case '-':
- return 7;
- /* '>>' and '<<' are 8 */
- case '<':
- case '>':
- return 9;
- /* '==' and '!=' are 10 */
- case '&':
- return 11;
- case '^':
- return 12;
- case '|':
- return 13;
- case '?':
- return 16;
- default:
- do_warning("unknown op '%c'", op[0]);
- return -1;
- }
- } else {
- if (strcmp(op, "++") == 0 ||
- strcmp(op, "--") == 0) {
- return 3;
- } else if (strcmp(op, ">>") == 0 ||
- strcmp(op, "<<") == 0) {
- return 8;
- } else if (strcmp(op, ">=") == 0 ||
- strcmp(op, "<=") == 0) {
- return 9;
- } else if (strcmp(op, "==") == 0 ||
- strcmp(op, "!=") == 0) {
- return 10;
- } else if (strcmp(op, "&&") == 0) {
- return 14;
- } else if (strcmp(op, "||") == 0) {
- return 15;
- } else {
- do_warning("unknown op '%s'", op);
- return -1;
- }
- }
-}
-
-static int set_op_prio(struct tep_print_arg *arg)
-{
-
- /* single ops are the greatest */
- if (!arg->op.left || arg->op.left->type == TEP_PRINT_NULL)
- arg->op.prio = 0;
- else
- arg->op.prio = get_op_prio(arg->op.op);
-
- return arg->op.prio;
-}
-
-/* Note, *tok does not get freed, but will most likely be saved */
-static enum tep_event_type
-process_op(struct tep_event *event, struct tep_print_arg *arg, char **tok)
-{
- struct tep_print_arg *left, *right = NULL;
- enum tep_event_type type;
- char *token;
-
- /* the op is passed in via tok */
- token = *tok;
-
- if (arg->type == TEP_PRINT_OP && !arg->op.left) {
- /* handle single op */
- if (token[1]) {
- do_warning_event(event, "bad op token %s", token);
- goto out_free;
- }
- switch (token[0]) {
- case '~':
- case '!':
- case '+':
- case '-':
- break;
- default:
- do_warning_event(event, "bad op token %s", token);
- goto out_free;
-
- }
-
- /* make an empty left */
- left = alloc_arg();
- if (!left)
- goto out_warn_free;
-
- left->type = TEP_PRINT_NULL;
- arg->op.left = left;
-
- right = alloc_arg();
- if (!right)
- goto out_warn_free;
-
- arg->op.right = right;
-
- /* do not free the token, it belongs to an op */
- *tok = NULL;
- type = process_arg(event, right, tok);
-
- } else if (strcmp(token, "?") == 0) {
-
- left = alloc_arg();
- if (!left)
- goto out_warn_free;
-
- /* copy the top arg to the left */
- *left = *arg;
-
- arg->type = TEP_PRINT_OP;
- arg->op.op = token;
- arg->op.left = left;
- arg->op.prio = 0;
-
- /* it will set arg->op.right */
- type = process_cond(event, arg, tok);
-
- } else if (strcmp(token, ">>") == 0 ||
- strcmp(token, "<<") == 0 ||
- strcmp(token, "&") == 0 ||
- strcmp(token, "|") == 0 ||
- strcmp(token, "&&") == 0 ||
- strcmp(token, "||") == 0 ||
- strcmp(token, "-") == 0 ||
- strcmp(token, "+") == 0 ||
- strcmp(token, "*") == 0 ||
- strcmp(token, "^") == 0 ||
- strcmp(token, "/") == 0 ||
- strcmp(token, "%") == 0 ||
- strcmp(token, "<") == 0 ||
- strcmp(token, ">") == 0 ||
- strcmp(token, "<=") == 0 ||
- strcmp(token, ">=") == 0 ||
- strcmp(token, "==") == 0 ||
- strcmp(token, "!=") == 0) {
-
- left = alloc_arg();
- if (!left)
- goto out_warn_free;
-
- /* copy the top arg to the left */
- *left = *arg;
-
- arg->type = TEP_PRINT_OP;
- arg->op.op = token;
- arg->op.left = left;
- arg->op.right = NULL;
-
- if (set_op_prio(arg) == -1) {
- event->flags |= TEP_EVENT_FL_FAILED;
- /* arg->op.op (= token) will be freed at out_free */
- arg->op.op = NULL;
- goto out_free;
- }
-
- type = read_token_item(&token);
- *tok = token;
-
- /* could just be a type pointer */
- if ((strcmp(arg->op.op, "*") == 0) &&
- type == TEP_EVENT_DELIM && (strcmp(token, ")") == 0)) {
- int ret;
-
- if (left->type != TEP_PRINT_ATOM) {
- do_warning_event(event, "bad pointer type");
- goto out_free;
- }
- ret = append(&left->atom.atom, " ", "*");
- if (ret < 0)
- goto out_warn_free;
-
- free(arg->op.op);
- *arg = *left;
- free(left);
-
- return type;
- }
-
- right = alloc_arg();
- if (!right)
- goto out_warn_free;
-
- type = process_arg_token(event, right, tok, type);
- if (type == TEP_EVENT_ERROR) {
- free_arg(right);
- /* token was freed in process_arg_token() via *tok */
- token = NULL;
- goto out_free;
- }
-
- if (right->type == TEP_PRINT_OP &&
- get_op_prio(arg->op.op) < get_op_prio(right->op.op)) {
- struct tep_print_arg tmp;
-
- /* rotate ops according to the priority */
- arg->op.right = right->op.left;
-
- tmp = *arg;
- *arg = *right;
- *right = tmp;
-
- arg->op.left = right;
- } else {
- arg->op.right = right;
- }
-
- } else if (strcmp(token, "[") == 0) {
-
- left = alloc_arg();
- if (!left)
- goto out_warn_free;
-
- *left = *arg;
-
- arg->type = TEP_PRINT_OP;
- arg->op.op = token;
- arg->op.left = left;
-
- arg->op.prio = 0;
-
- /* it will set arg->op.right */
- type = process_array(event, arg, tok);
-
- } else {
- do_warning_event(event, "unknown op '%s'", token);
- event->flags |= TEP_EVENT_FL_FAILED;
- /* the arg is now the left side */
- goto out_free;
- }
-
- if (type == TEP_EVENT_OP && strcmp(*tok, ":") != 0) {
- int prio;
-
- /* higher prios need to be closer to the root */
- prio = get_op_prio(*tok);
-
- if (prio > arg->op.prio)
- return process_op(event, arg, tok);
-
- return process_op(event, right, tok);
- }
-
- return type;
-
-out_warn_free:
- do_warning_event(event, "%s: not enough memory!", __func__);
-out_free:
- free_token(token);
- *tok = NULL;
- return TEP_EVENT_ERROR;
-}
-
-static enum tep_event_type
-process_entry(struct tep_event *event __maybe_unused, struct tep_print_arg *arg,
- char **tok)
-{
- enum tep_event_type type;
- char *field;
- char *token;
-
- if (read_expected(TEP_EVENT_OP, "->") < 0)
- goto out_err;
-
- if (read_expect_type(TEP_EVENT_ITEM, &token) < 0)
- goto out_free;
- field = token;
-
- arg->type = TEP_PRINT_FIELD;
- arg->field.name = field;
-
- if (is_flag_field) {
- arg->field.field = tep_find_any_field(event, arg->field.name);
- arg->field.field->flags |= TEP_FIELD_IS_FLAG;
- is_flag_field = 0;
- } else if (is_symbolic_field) {
- arg->field.field = tep_find_any_field(event, arg->field.name);
- arg->field.field->flags |= TEP_FIELD_IS_SYMBOLIC;
- is_symbolic_field = 0;
- }
-
- type = read_token(&token);
- *tok = token;
-
- return type;
-
- out_free:
- free_token(token);
- out_err:
- *tok = NULL;
- return TEP_EVENT_ERROR;
-}
-
-static int alloc_and_process_delim(struct tep_event *event, char *next_token,
- struct tep_print_arg **print_arg)
-{
- struct tep_print_arg *field;
- enum tep_event_type type;
- char *token;
- int ret = 0;
-
- field = alloc_arg();
- if (!field) {
- do_warning_event(event, "%s: not enough memory!", __func__);
- errno = ENOMEM;
- return -1;
- }
-
- type = process_arg(event, field, &token);
-
- if (test_type_token(type, token, TEP_EVENT_DELIM, next_token)) {
- errno = EINVAL;
- ret = -1;
- free_arg(field);
- goto out_free_token;
- }
-
- *print_arg = field;
-
-out_free_token:
- free_token(token);
-
- return ret;
-}
-
-static char *arg_eval (struct tep_print_arg *arg);
-
-static unsigned long long
-eval_type_str(unsigned long long val, const char *type, int pointer)
-{
- int sign = 0;
- char *ref;
- int len;
-
- len = strlen(type);
-
- if (pointer) {
-
- if (type[len-1] != '*') {
- do_warning("pointer expected with non pointer type");
- return val;
- }
-
- ref = malloc(len);
- if (!ref) {
- do_warning("%s: not enough memory!", __func__);
- return val;
- }
- memcpy(ref, type, len);
-
- /* chop off the " *" */
- ref[len - 2] = 0;
-
- val = eval_type_str(val, ref, 0);
- free(ref);
- return val;
- }
-
- /* check if this is a pointer */
- if (type[len - 1] == '*')
- return val;
-
- /* Try to figure out the arg size*/
- if (strncmp(type, "struct", 6) == 0)
- /* all bets off */
- return val;
-
- if (strcmp(type, "u8") == 0)
- return val & 0xff;
-
- if (strcmp(type, "u16") == 0)
- return val & 0xffff;
-
- if (strcmp(type, "u32") == 0)
- return val & 0xffffffff;
-
- if (strcmp(type, "u64") == 0 ||
- strcmp(type, "s64") == 0)
- return val;
-
- if (strcmp(type, "s8") == 0)
- return (unsigned long long)(char)val & 0xff;
-
- if (strcmp(type, "s16") == 0)
- return (unsigned long long)(short)val & 0xffff;
-
- if (strcmp(type, "s32") == 0)
- return (unsigned long long)(int)val & 0xffffffff;
-
- if (strncmp(type, "unsigned ", 9) == 0) {
- sign = 0;
- type += 9;
- }
-
- if (strcmp(type, "char") == 0) {
- if (sign)
- return (unsigned long long)(char)val & 0xff;
- else
- return val & 0xff;
- }
-
- if (strcmp(type, "short") == 0) {
- if (sign)
- return (unsigned long long)(short)val & 0xffff;
- else
- return val & 0xffff;
- }
-
- if (strcmp(type, "int") == 0) {
- if (sign)
- return (unsigned long long)(int)val & 0xffffffff;
- else
- return val & 0xffffffff;
- }
-
- return val;
-}
-
-/*
- * Try to figure out the type.
- */
-static unsigned long long
-eval_type(unsigned long long val, struct tep_print_arg *arg, int pointer)
-{
- if (arg->type != TEP_PRINT_TYPE) {
- do_warning("expected type argument");
- return 0;
- }
-
- return eval_type_str(val, arg->typecast.type, pointer);
-}
-
-static int arg_num_eval(struct tep_print_arg *arg, long long *val)
-{
- long long left, right;
- int ret = 1;
-
- switch (arg->type) {
- case TEP_PRINT_ATOM:
- *val = strtoll(arg->atom.atom, NULL, 0);
- break;
- case TEP_PRINT_TYPE:
- ret = arg_num_eval(arg->typecast.item, val);
- if (!ret)
- break;
- *val = eval_type(*val, arg, 0);
- break;
- case TEP_PRINT_OP:
- switch (arg->op.op[0]) {
- case '|':
- ret = arg_num_eval(arg->op.left, &left);
- if (!ret)
- break;
- ret = arg_num_eval(arg->op.right, &right);
- if (!ret)
- break;
- if (arg->op.op[1])
- *val = left || right;
- else
- *val = left | right;
- break;
- case '&':
- ret = arg_num_eval(arg->op.left, &left);
- if (!ret)
- break;
- ret = arg_num_eval(arg->op.right, &right);
- if (!ret)
- break;
- if (arg->op.op[1])
- *val = left && right;
- else
- *val = left & right;
- break;
- case '<':
- ret = arg_num_eval(arg->op.left, &left);
- if (!ret)
- break;
- ret = arg_num_eval(arg->op.right, &right);
- if (!ret)
- break;
- switch (arg->op.op[1]) {
- case 0:
- *val = left < right;
- break;
- case '<':
- *val = left << right;
- break;
- case '=':
- *val = left <= right;
- break;
- default:
- do_warning("unknown op '%s'", arg->op.op);
- ret = 0;
- }
- break;
- case '>':
- ret = arg_num_eval(arg->op.left, &left);
- if (!ret)
- break;
- ret = arg_num_eval(arg->op.right, &right);
- if (!ret)
- break;
- switch (arg->op.op[1]) {
- case 0:
- *val = left > right;
- break;
- case '>':
- *val = left >> right;
- break;
- case '=':
- *val = left >= right;
- break;
- default:
- do_warning("unknown op '%s'", arg->op.op);
- ret = 0;
- }
- break;
- case '=':
- ret = arg_num_eval(arg->op.left, &left);
- if (!ret)
- break;
- ret = arg_num_eval(arg->op.right, &right);
- if (!ret)
- break;
-
- if (arg->op.op[1] != '=') {
- do_warning("unknown op '%s'", arg->op.op);
- ret = 0;
- } else
- *val = left == right;
- break;
- case '!':
- ret = arg_num_eval(arg->op.left, &left);
- if (!ret)
- break;
- ret = arg_num_eval(arg->op.right, &right);
- if (!ret)
- break;
-
- switch (arg->op.op[1]) {
- case '=':
- *val = left != right;
- break;
- default:
- do_warning("unknown op '%s'", arg->op.op);
- ret = 0;
- }
- break;
- case '-':
- /* check for negative */
- if (arg->op.left->type == TEP_PRINT_NULL)
- left = 0;
- else
- ret = arg_num_eval(arg->op.left, &left);
- if (!ret)
- break;
- ret = arg_num_eval(arg->op.right, &right);
- if (!ret)
- break;
- *val = left - right;
- break;
- case '+':
- if (arg->op.left->type == TEP_PRINT_NULL)
- left = 0;
- else
- ret = arg_num_eval(arg->op.left, &left);
- if (!ret)
- break;
- ret = arg_num_eval(arg->op.right, &right);
- if (!ret)
- break;
- *val = left + right;
- break;
- case '~':
- ret = arg_num_eval(arg->op.right, &right);
- if (!ret)
- break;
- *val = ~right;
- break;
- default:
- do_warning("unknown op '%s'", arg->op.op);
- ret = 0;
- }
- break;
-
- case TEP_PRINT_NULL:
- case TEP_PRINT_FIELD ... TEP_PRINT_SYMBOL:
- case TEP_PRINT_STRING:
- case TEP_PRINT_BSTRING:
- case TEP_PRINT_BITMASK:
- default:
- do_warning("invalid eval type %d", arg->type);
- ret = 0;
-
- }
- return ret;
-}
-
-static char *arg_eval (struct tep_print_arg *arg)
-{
- long long val;
- static char buf[24];
-
- switch (arg->type) {
- case TEP_PRINT_ATOM:
- return arg->atom.atom;
- case TEP_PRINT_TYPE:
- return arg_eval(arg->typecast.item);
- case TEP_PRINT_OP:
- if (!arg_num_eval(arg, &val))
- break;
- sprintf(buf, "%lld", val);
- return buf;
-
- case TEP_PRINT_NULL:
- case TEP_PRINT_FIELD ... TEP_PRINT_SYMBOL:
- case TEP_PRINT_STRING:
- case TEP_PRINT_BSTRING:
- case TEP_PRINT_BITMASK:
- default:
- do_warning("invalid eval type %d", arg->type);
- break;
- }
-
- return NULL;
-}
-
-static enum tep_event_type
-process_fields(struct tep_event *event, struct tep_print_flag_sym **list, char **tok)
-{
- enum tep_event_type type;
- struct tep_print_arg *arg = NULL;
- struct tep_print_flag_sym *field;
- char *token = *tok;
- char *value;
-
- do {
- free_token(token);
- type = read_token_item(&token);
- if (test_type_token(type, token, TEP_EVENT_OP, "{"))
- break;
-
- arg = alloc_arg();
- if (!arg)
- goto out_free;
-
- free_token(token);
- type = process_arg(event, arg, &token);
-
- if (type == TEP_EVENT_OP)
- type = process_op(event, arg, &token);
-
- if (type == TEP_EVENT_ERROR)
- goto out_free;
-
- if (test_type_token(type, token, TEP_EVENT_DELIM, ","))
- goto out_free;
-
- field = calloc(1, sizeof(*field));
- if (!field)
- goto out_free;
-
- value = arg_eval(arg);
- if (value == NULL)
- goto out_free_field;
- field->value = strdup(value);
- if (field->value == NULL)
- goto out_free_field;
-
- free_arg(arg);
- arg = alloc_arg();
- if (!arg)
- goto out_free;
-
- free_token(token);
- type = process_arg(event, arg, &token);
- if (test_type_token(type, token, TEP_EVENT_OP, "}"))
- goto out_free_field;
-
- value = arg_eval(arg);
- if (value == NULL)
- goto out_free_field;
- field->str = strdup(value);
- if (field->str == NULL)
- goto out_free_field;
- free_arg(arg);
- arg = NULL;
-
- *list = field;
- list = &field->next;
-
- free_token(token);
- type = read_token_item(&token);
- } while (type == TEP_EVENT_DELIM && strcmp(token, ",") == 0);
-
- *tok = token;
- return type;
-
-out_free_field:
- free_flag_sym(field);
-out_free:
- free_arg(arg);
- free_token(token);
- *tok = NULL;
-
- return TEP_EVENT_ERROR;
-}
-
-static enum tep_event_type
-process_flags(struct tep_event *event, struct tep_print_arg *arg, char **tok)
-{
- struct tep_print_arg *field;
- enum tep_event_type type;
- char *token = NULL;
-
- memset(arg, 0, sizeof(*arg));
- arg->type = TEP_PRINT_FLAGS;
-
- field = alloc_arg();
- if (!field) {
- do_warning_event(event, "%s: not enough memory!", __func__);
- goto out_free;
- }
-
- type = process_field_arg(event, field, &token);
-
- /* Handle operations in the first argument */
- while (type == TEP_EVENT_OP)
- type = process_op(event, field, &token);
-
- if (test_type_token(type, token, TEP_EVENT_DELIM, ","))
- goto out_free_field;
- free_token(token);
-
- arg->flags.field = field;
-
- type = read_token_item(&token);
- if (event_item_type(type)) {
- arg->flags.delim = token;
- type = read_token_item(&token);
- }
-
- if (test_type_token(type, token, TEP_EVENT_DELIM, ","))
- goto out_free;
-
- type = process_fields(event, &arg->flags.flags, &token);
- if (test_type_token(type, token, TEP_EVENT_DELIM, ")"))
- goto out_free;
-
- free_token(token);
- type = read_token_item(tok);
- return type;
-
-out_free_field:
- free_arg(field);
-out_free:
- free_token(token);
- *tok = NULL;
- return TEP_EVENT_ERROR;
-}
-
-static enum tep_event_type
-process_symbols(struct tep_event *event, struct tep_print_arg *arg, char **tok)
-{
- struct tep_print_arg *field;
- enum tep_event_type type;
- char *token = NULL;
-
- memset(arg, 0, sizeof(*arg));
- arg->type = TEP_PRINT_SYMBOL;
-
- field = alloc_arg();
- if (!field) {
- do_warning_event(event, "%s: not enough memory!", __func__);
- goto out_free;
- }
-
- type = process_field_arg(event, field, &token);
-
- if (test_type_token(type, token, TEP_EVENT_DELIM, ","))
- goto out_free_field;
-
- arg->symbol.field = field;
-
- type = process_fields(event, &arg->symbol.symbols, &token);
- if (test_type_token(type, token, TEP_EVENT_DELIM, ")"))
- goto out_free;
-
- free_token(token);
- type = read_token_item(tok);
- return type;
-
-out_free_field:
- free_arg(field);
-out_free:
- free_token(token);
- *tok = NULL;
- return TEP_EVENT_ERROR;
-}
-
-static enum tep_event_type
-process_hex_common(struct tep_event *event, struct tep_print_arg *arg,
- char **tok, enum tep_print_arg_type type)
-{
- memset(arg, 0, sizeof(*arg));
- arg->type = type;
-
- if (alloc_and_process_delim(event, ",", &arg->hex.field))
- goto out;
-
- if (alloc_and_process_delim(event, ")", &arg->hex.size))
- goto free_field;
-
- return read_token_item(tok);
-
-free_field:
- free_arg(arg->hex.field);
- arg->hex.field = NULL;
-out:
- *tok = NULL;
- return TEP_EVENT_ERROR;
-}
-
-static enum tep_event_type
-process_hex(struct tep_event *event, struct tep_print_arg *arg, char **tok)
-{
- return process_hex_common(event, arg, tok, TEP_PRINT_HEX);
-}
-
-static enum tep_event_type
-process_hex_str(struct tep_event *event, struct tep_print_arg *arg,
- char **tok)
-{
- return process_hex_common(event, arg, tok, TEP_PRINT_HEX_STR);
-}
-
-static enum tep_event_type
-process_int_array(struct tep_event *event, struct tep_print_arg *arg, char **tok)
-{
- memset(arg, 0, sizeof(*arg));
- arg->type = TEP_PRINT_INT_ARRAY;
-
- if (alloc_and_process_delim(event, ",", &arg->int_array.field))
- goto out;
-
- if (alloc_and_process_delim(event, ",", &arg->int_array.count))
- goto free_field;
-
- if (alloc_and_process_delim(event, ")", &arg->int_array.el_size))
- goto free_size;
-
- return read_token_item(tok);
-
-free_size:
- free_arg(arg->int_array.count);
- arg->int_array.count = NULL;
-free_field:
- free_arg(arg->int_array.field);
- arg->int_array.field = NULL;
-out:
- *tok = NULL;
- return TEP_EVENT_ERROR;
-}
-
-static enum tep_event_type
-process_dynamic_array(struct tep_event *event, struct tep_print_arg *arg, char **tok)
-{
- struct tep_format_field *field;
- enum tep_event_type type;
- char *token;
-
- memset(arg, 0, sizeof(*arg));
- arg->type = TEP_PRINT_DYNAMIC_ARRAY;
-
- /*
- * The item within the parenthesis is another field that holds
- * the index into where the array starts.
- */
- type = read_token(&token);
- *tok = token;
- if (type != TEP_EVENT_ITEM)
- goto out_free;
-
- /* Find the field */
-
- field = tep_find_field(event, token);
- if (!field)
- goto out_free;
-
- arg->dynarray.field = field;
- arg->dynarray.index = 0;
-
- if (read_expected(TEP_EVENT_DELIM, ")") < 0)
- goto out_free;
-
- free_token(token);
- type = read_token_item(&token);
- *tok = token;
- if (type != TEP_EVENT_OP || strcmp(token, "[") != 0)
- return type;
-
- free_token(token);
- arg = alloc_arg();
- if (!arg) {
- do_warning_event(event, "%s: not enough memory!", __func__);
- *tok = NULL;
- return TEP_EVENT_ERROR;
- }
-
- type = process_arg(event, arg, &token);
- if (type == TEP_EVENT_ERROR)
- goto out_free_arg;
-
- if (!test_type_token(type, token, TEP_EVENT_OP, "]"))
- goto out_free_arg;
-
- free_token(token);
- type = read_token_item(tok);
- return type;
-
- out_free_arg:
- free_arg(arg);
- out_free:
- free_token(token);
- *tok = NULL;
- return TEP_EVENT_ERROR;
-}
-
-static enum tep_event_type
-process_dynamic_array_len(struct tep_event *event, struct tep_print_arg *arg,
- char **tok)
-{
- struct tep_format_field *field;
- enum tep_event_type type;
- char *token;
-
- if (read_expect_type(TEP_EVENT_ITEM, &token) < 0)
- goto out_free;
-
- arg->type = TEP_PRINT_DYNAMIC_ARRAY_LEN;
-
- /* Find the field */
- field = tep_find_field(event, token);
- if (!field)
- goto out_free;
-
- arg->dynarray.field = field;
- arg->dynarray.index = 0;
-
- if (read_expected(TEP_EVENT_DELIM, ")") < 0)
- goto out_err;
-
- free_token(token);
- type = read_token(&token);
- *tok = token;
-
- return type;
-
- out_free:
- free_token(token);
- out_err:
- *tok = NULL;
- return TEP_EVENT_ERROR;
-}
-
-static enum tep_event_type
-process_paren(struct tep_event *event, struct tep_print_arg *arg, char **tok)
-{
- struct tep_print_arg *item_arg;
- enum tep_event_type type;
- char *token;
-
- type = process_arg(event, arg, &token);
-
- if (type == TEP_EVENT_ERROR)
- goto out_free;
-
- if (type == TEP_EVENT_OP)
- type = process_op(event, arg, &token);
-
- if (type == TEP_EVENT_ERROR)
- goto out_free;
-
- if (test_type_token(type, token, TEP_EVENT_DELIM, ")"))
- goto out_free;
-
- free_token(token);
- type = read_token_item(&token);
-
- /*
- * If the next token is an item or another open paren, then
- * this was a typecast.
- */
- if (event_item_type(type) ||
- (type == TEP_EVENT_DELIM && strcmp(token, "(") == 0)) {
-
- /* make this a typecast and contine */
-
- /* prevous must be an atom */
- if (arg->type != TEP_PRINT_ATOM) {
- do_warning_event(event, "previous needed to be TEP_PRINT_ATOM");
- goto out_free;
- }
-
- item_arg = alloc_arg();
- if (!item_arg) {
- do_warning_event(event, "%s: not enough memory!",
- __func__);
- goto out_free;
- }
-
- arg->type = TEP_PRINT_TYPE;
- arg->typecast.type = arg->atom.atom;
- arg->typecast.item = item_arg;
- type = process_arg_token(event, item_arg, &token, type);
-
- }
-
- *tok = token;
- return type;
-
- out_free:
- free_token(token);
- *tok = NULL;
- return TEP_EVENT_ERROR;
-}
-
-
-static enum tep_event_type
-process_str(struct tep_event *event __maybe_unused, struct tep_print_arg *arg,
- char **tok)
-{
- enum tep_event_type type;
- char *token;
-
- if (read_expect_type(TEP_EVENT_ITEM, &token) < 0)
- goto out_free;
-
- arg->type = TEP_PRINT_STRING;
- arg->string.string = token;
- arg->string.field = NULL;
-
- if (read_expected(TEP_EVENT_DELIM, ")") < 0)
- goto out_err;
-
- type = read_token(&token);
- *tok = token;
-
- return type;
-
- out_free:
- free_token(token);
- out_err:
- *tok = NULL;
- return TEP_EVENT_ERROR;
-}
-
-static enum tep_event_type
-process_bitmask(struct tep_event *event __maybe_unused, struct tep_print_arg *arg,
- char **tok)
-{
- enum tep_event_type type;
- char *token;
-
- if (read_expect_type(TEP_EVENT_ITEM, &token) < 0)
- goto out_free;
-
- arg->type = TEP_PRINT_BITMASK;
- arg->bitmask.bitmask = token;
- arg->bitmask.field = NULL;
-
- if (read_expected(TEP_EVENT_DELIM, ")") < 0)
- goto out_err;
-
- type = read_token(&token);
- *tok = token;
-
- return type;
-
- out_free:
- free_token(token);
- out_err:
- *tok = NULL;
- return TEP_EVENT_ERROR;
-}
-
-static struct tep_function_handler *
-find_func_handler(struct tep_handle *tep, char *func_name)
-{
- struct tep_function_handler *func;
-
- if (!tep)
- return NULL;
-
- for (func = tep->func_handlers; func; func = func->next) {
- if (strcmp(func->name, func_name) == 0)
- break;
- }
-
- return func;
-}
-
-static void remove_func_handler(struct tep_handle *tep, char *func_name)
-{
- struct tep_function_handler *func;
- struct tep_function_handler **next;
-
- next = &tep->func_handlers;
- while ((func = *next)) {
- if (strcmp(func->name, func_name) == 0) {
- *next = func->next;
- free_func_handle(func);
- break;
- }
- next = &func->next;
- }
-}
-
-static enum tep_event_type
-process_func_handler(struct tep_event *event, struct tep_function_handler *func,
- struct tep_print_arg *arg, char **tok)
-{
- struct tep_print_arg **next_arg;
- struct tep_print_arg *farg;
- enum tep_event_type type;
- char *token;
- int i;
-
- arg->type = TEP_PRINT_FUNC;
- arg->func.func = func;
-
- *tok = NULL;
-
- next_arg = &(arg->func.args);
- for (i = 0; i < func->nr_args; i++) {
- farg = alloc_arg();
- if (!farg) {
- do_warning_event(event, "%s: not enough memory!",
- __func__);
- return TEP_EVENT_ERROR;
- }
-
- type = process_arg(event, farg, &token);
- if (i < (func->nr_args - 1)) {
- if (type != TEP_EVENT_DELIM || strcmp(token, ",") != 0) {
- do_warning_event(event,
- "Error: function '%s()' expects %d arguments but event %s only uses %d",
- func->name, func->nr_args,
- event->name, i + 1);
- goto err;
- }
- } else {
- if (type != TEP_EVENT_DELIM || strcmp(token, ")") != 0) {
- do_warning_event(event,
- "Error: function '%s()' only expects %d arguments but event %s has more",
- func->name, func->nr_args, event->name);
- goto err;
- }
- }
-
- *next_arg = farg;
- next_arg = &(farg->next);
- free_token(token);
- }
-
- type = read_token(&token);
- *tok = token;
-
- return type;
-
-err:
- free_arg(farg);
- free_token(token);
- return TEP_EVENT_ERROR;
-}
-
-static enum tep_event_type
-process_builtin_expect(struct tep_event *event, struct tep_print_arg *arg, char **tok)
-{
- enum tep_event_type type;
- char *token = NULL;
-
- /* Handle __builtin_expect( cond, #) */
- type = process_arg(event, arg, &token);
-
- if (type != TEP_EVENT_DELIM || token[0] != ',')
- goto out_free;
-
- free_token(token);
-
- /* We don't care what the second parameter is of the __builtin_expect() */
- if (read_expect_type(TEP_EVENT_ITEM, &token) < 0)
- goto out_free;
-
- if (read_expected(TEP_EVENT_DELIM, ")") < 0)
- goto out_free;
-
- free_token(token);
- type = read_token_item(tok);
- return type;
-
-out_free:
- free_token(token);
- *tok = NULL;
- return TEP_EVENT_ERROR;
-}
-
-static enum tep_event_type
-process_function(struct tep_event *event, struct tep_print_arg *arg,
- char *token, char **tok)
-{
- struct tep_function_handler *func;
-
- if (strcmp(token, "__print_flags") == 0) {
- free_token(token);
- is_flag_field = 1;
- return process_flags(event, arg, tok);
- }
- if (strcmp(token, "__print_symbolic") == 0) {
- free_token(token);
- is_symbolic_field = 1;
- return process_symbols(event, arg, tok);
- }
- if (strcmp(token, "__print_hex") == 0) {
- free_token(token);
- return process_hex(event, arg, tok);
- }
- if (strcmp(token, "__print_hex_str") == 0) {
- free_token(token);
- return process_hex_str(event, arg, tok);
- }
- if (strcmp(token, "__print_array") == 0) {
- free_token(token);
- return process_int_array(event, arg, tok);
- }
- if (strcmp(token, "__get_str") == 0 ||
- strcmp(token, "__get_rel_str") == 0) {
- free_token(token);
- return process_str(event, arg, tok);
- }
- if (strcmp(token, "__get_bitmask") == 0 ||
- strcmp(token, "__get_rel_bitmask") == 0) {
- free_token(token);
- return process_bitmask(event, arg, tok);
- }
- if (strcmp(token, "__get_dynamic_array") == 0 ||
- strcmp(token, "__get_rel_dynamic_array") == 0) {
- free_token(token);
- return process_dynamic_array(event, arg, tok);
- }
- if (strcmp(token, "__get_dynamic_array_len") == 0 ||
- strcmp(token, "__get_rel_dynamic_array_len") == 0) {
- free_token(token);
- return process_dynamic_array_len(event, arg, tok);
- }
- if (strcmp(token, "__builtin_expect") == 0) {
- free_token(token);
- return process_builtin_expect(event, arg, tok);
- }
-
- func = find_func_handler(event->tep, token);
- if (func) {
- free_token(token);
- return process_func_handler(event, func, arg, tok);
- }
-
- do_warning_event(event, "function %s not defined", token);
- free_token(token);
- return TEP_EVENT_ERROR;
-}
-
-static enum tep_event_type
-process_arg_token(struct tep_event *event, struct tep_print_arg *arg,
- char **tok, enum tep_event_type type)
-{
- char *token;
- char *atom;
-
- token = *tok;
-
- switch (type) {
- case TEP_EVENT_ITEM:
- if (strcmp(token, "REC") == 0) {
- free_token(token);
- type = process_entry(event, arg, &token);
- break;
- }
- atom = token;
- /* test the next token */
- type = read_token_item(&token);
-
- /*
- * If the next token is a parenthesis, then this
- * is a function.
- */
- if (type == TEP_EVENT_DELIM && strcmp(token, "(") == 0) {
- free_token(token);
- token = NULL;
- /* this will free atom. */
- type = process_function(event, arg, atom, &token);
- break;
- }
- /* atoms can be more than one token long */
- while (type == TEP_EVENT_ITEM) {
- int ret;
-
- ret = append(&atom, " ", token);
- if (ret < 0) {
- free(atom);
- *tok = NULL;
- free_token(token);
- return TEP_EVENT_ERROR;
- }
- free_token(token);
- type = read_token_item(&token);
- }
-
- arg->type = TEP_PRINT_ATOM;
- arg->atom.atom = atom;
- break;
-
- case TEP_EVENT_DQUOTE:
- case TEP_EVENT_SQUOTE:
- arg->type = TEP_PRINT_ATOM;
- arg->atom.atom = token;
- type = read_token_item(&token);
- break;
- case TEP_EVENT_DELIM:
- if (strcmp(token, "(") == 0) {
- free_token(token);
- type = process_paren(event, arg, &token);
- break;
- }
- case TEP_EVENT_OP:
- /* handle single ops */
- arg->type = TEP_PRINT_OP;
- arg->op.op = token;
- arg->op.left = NULL;
- type = process_op(event, arg, &token);
-
- /* On error, the op is freed */
- if (type == TEP_EVENT_ERROR)
- arg->op.op = NULL;
-
- /* return error type if errored */
- break;
-
- case TEP_EVENT_ERROR ... TEP_EVENT_NEWLINE:
- default:
- do_warning_event(event, "unexpected type %d", type);
- return TEP_EVENT_ERROR;
- }
- *tok = token;
-
- return type;
-}
-
-static int event_read_print_args(struct tep_event *event, struct tep_print_arg **list)
-{
- enum tep_event_type type = TEP_EVENT_ERROR;
- struct tep_print_arg *arg;
- char *token;
- int args = 0;
-
- do {
- if (type == TEP_EVENT_NEWLINE) {
- type = read_token_item(&token);
- continue;
- }
-
- arg = alloc_arg();
- if (!arg) {
- do_warning_event(event, "%s: not enough memory!",
- __func__);
- return -1;
- }
-
- type = process_arg(event, arg, &token);
-
- if (type == TEP_EVENT_ERROR) {
- free_token(token);
- free_arg(arg);
- return -1;
- }
-
- *list = arg;
- args++;
-
- if (type == TEP_EVENT_OP) {
- type = process_op(event, arg, &token);
- free_token(token);
- if (type == TEP_EVENT_ERROR) {
- *list = NULL;
- free_arg(arg);
- return -1;
- }
- list = &arg->next;
- continue;
- }
-
- if (type == TEP_EVENT_DELIM && strcmp(token, ",") == 0) {
- free_token(token);
- *list = arg;
- list = &arg->next;
- continue;
- }
- break;
- } while (type != TEP_EVENT_NONE);
-
- if (type != TEP_EVENT_NONE && type != TEP_EVENT_ERROR)
- free_token(token);
-
- return args;
-}
-
-static int event_read_print(struct tep_event *event)
-{
- enum tep_event_type type;
- char *token;
- int ret;
-
- if (read_expected_item(TEP_EVENT_ITEM, "print") < 0)
- return -1;
-
- if (read_expected(TEP_EVENT_ITEM, "fmt") < 0)
- return -1;
-
- if (read_expected(TEP_EVENT_OP, ":") < 0)
- return -1;
-
- if (read_expect_type(TEP_EVENT_DQUOTE, &token) < 0)
- goto fail;
-
- concat:
- event->print_fmt.format = token;
- event->print_fmt.args = NULL;
-
- /* ok to have no arg */
- type = read_token_item(&token);
-
- if (type == TEP_EVENT_NONE)
- return 0;
-
- /* Handle concatenation of print lines */
- if (type == TEP_EVENT_DQUOTE) {
- char *cat;
-
- if (asprintf(&cat, "%s%s", event->print_fmt.format, token) < 0)
- goto fail;
- free_token(token);
- free_token(event->print_fmt.format);
- event->print_fmt.format = NULL;
- token = cat;
- goto concat;
- }
-
- if (test_type_token(type, token, TEP_EVENT_DELIM, ","))
- goto fail;
-
- free_token(token);
-
- ret = event_read_print_args(event, &event->print_fmt.args);
- if (ret < 0)
- return -1;
-
- return ret;
-
- fail:
- free_token(token);
- return -1;
-}
-
-/**
- * tep_find_common_field - return a common field by event
- * @event: handle for the event
- * @name: the name of the common field to return
- *
- * Returns a common field from the event by the given @name.
- * This only searches the common fields and not all field.
- */
-struct tep_format_field *
-tep_find_common_field(struct tep_event *event, const char *name)
-{
- struct tep_format_field *format;
-
- for (format = event->format.common_fields;
- format; format = format->next) {
- if (strcmp(format->name, name) == 0)
- break;
- }
-
- return format;
-}
-
-/**
- * tep_find_field - find a non-common field
- * @event: handle for the event
- * @name: the name of the non-common field
- *
- * Returns a non-common field by the given @name.
- * This does not search common fields.
- */
-struct tep_format_field *
-tep_find_field(struct tep_event *event, const char *name)
-{
- struct tep_format_field *format;
-
- for (format = event->format.fields;
- format; format = format->next) {
- if (strcmp(format->name, name) == 0)
- break;
- }
-
- return format;
-}
-
-/**
- * tep_find_any_field - find any field by name
- * @event: handle for the event
- * @name: the name of the field
- *
- * Returns a field by the given @name.
- * This searches the common field names first, then
- * the non-common ones if a common one was not found.
- */
-struct tep_format_field *
-tep_find_any_field(struct tep_event *event, const char *name)
-{
- struct tep_format_field *format;
-
- format = tep_find_common_field(event, name);
- if (format)
- return format;
- return tep_find_field(event, name);
-}
-
-/**
- * tep_read_number - read a number from data
- * @tep: a handle to the trace event parser context
- * @ptr: the raw data
- * @size: the size of the data that holds the number
- *
- * Returns the number (converted to host) from the
- * raw data.
- */
-unsigned long long tep_read_number(struct tep_handle *tep,
- const void *ptr, int size)
-{
- unsigned long long val;
-
- switch (size) {
- case 1:
- return *(unsigned char *)ptr;
- case 2:
- return data2host2(tep, *(unsigned short *)ptr);
- case 4:
- return data2host4(tep, *(unsigned int *)ptr);
- case 8:
- memcpy(&val, (ptr), sizeof(unsigned long long));
- return data2host8(tep, val);
- default:
- /* BUG! */
- return 0;
- }
-}
-
-/**
- * tep_read_number_field - read a number from data
- * @field: a handle to the field
- * @data: the raw data to read
- * @value: the value to place the number in
- *
- * Reads raw data according to a field offset and size,
- * and translates it into @value.
- *
- * Returns 0 on success, -1 otherwise.
- */
-int tep_read_number_field(struct tep_format_field *field, const void *data,
- unsigned long long *value)
-{
- if (!field)
- return -1;
- switch (field->size) {
- case 1:
- case 2:
- case 4:
- case 8:
- *value = tep_read_number(field->event->tep,
- data + field->offset, field->size);
- return 0;
- default:
- return -1;
- }
-}
-
-static int get_common_info(struct tep_handle *tep,
- const char *type, int *offset, int *size)
-{
- struct tep_event *event;
- struct tep_format_field *field;
-
- /*
- * All events should have the same common elements.
- * Pick any event to find where the type is;
- */
- if (!tep->events) {
- do_warning("no event_list!");
- return -1;
- }
-
- event = tep->events[0];
- field = tep_find_common_field(event, type);
- if (!field)
- return -1;
-
- *offset = field->offset;
- *size = field->size;
-
- return 0;
-}
-
-static int __parse_common(struct tep_handle *tep, void *data,
- int *size, int *offset, const char *name)
-{
- int ret;
-
- if (!*size) {
- ret = get_common_info(tep, name, offset, size);
- if (ret < 0)
- return ret;
- }
- return tep_read_number(tep, data + *offset, *size);
-}
-
-static int trace_parse_common_type(struct tep_handle *tep, void *data)
-{
- return __parse_common(tep, data,
- &tep->type_size, &tep->type_offset,
- "common_type");
-}
-
-static int parse_common_pid(struct tep_handle *tep, void *data)
-{
- return __parse_common(tep, data,
- &tep->pid_size, &tep->pid_offset,
- "common_pid");
-}
-
-static int parse_common_pc(struct tep_handle *tep, void *data)
-{
- return __parse_common(tep, data,
- &tep->pc_size, &tep->pc_offset,
- "common_preempt_count");
-}
-
-static int parse_common_flags(struct tep_handle *tep, void *data)
-{
- return __parse_common(tep, data,
- &tep->flags_size, &tep->flags_offset,
- "common_flags");
-}
-
-static int parse_common_lock_depth(struct tep_handle *tep, void *data)
-{
- return __parse_common(tep, data,
- &tep->ld_size, &tep->ld_offset,
- "common_lock_depth");
-}
-
-static int parse_common_migrate_disable(struct tep_handle *tep, void *data)
-{
- return __parse_common(tep, data,
- &tep->ld_size, &tep->ld_offset,
- "common_migrate_disable");
-}
-
-static int events_id_cmp(const void *a, const void *b);
-
-/**
- * tep_find_event - find an event by given id
- * @tep: a handle to the trace event parser context
- * @id: the id of the event
- *
- * Returns an event that has a given @id.
- */
-struct tep_event *tep_find_event(struct tep_handle *tep, int id)
-{
- struct tep_event **eventptr;
- struct tep_event key;
- struct tep_event *pkey = &key;
-
- /* Check cache first */
- if (tep->last_event && tep->last_event->id == id)
- return tep->last_event;
-
- key.id = id;
-
- eventptr = bsearch(&pkey, tep->events, tep->nr_events,
- sizeof(*tep->events), events_id_cmp);
-
- if (eventptr) {
- tep->last_event = *eventptr;
- return *eventptr;
- }
-
- return NULL;
-}
-
-/**
- * tep_find_event_by_name - find an event by given name
- * @tep: a handle to the trace event parser context
- * @sys: the system name to search for
- * @name: the name of the event to search for
- *
- * This returns an event with a given @name and under the system
- * @sys. If @sys is NULL the first event with @name is returned.
- */
-struct tep_event *
-tep_find_event_by_name(struct tep_handle *tep,
- const char *sys, const char *name)
-{
- struct tep_event *event = NULL;
- int i;
-
- if (tep->last_event &&
- strcmp(tep->last_event->name, name) == 0 &&
- (!sys || strcmp(tep->last_event->system, sys) == 0))
- return tep->last_event;
-
- for (i = 0; i < tep->nr_events; i++) {
- event = tep->events[i];
- if (strcmp(event->name, name) == 0) {
- if (!sys)
- break;
- if (strcmp(event->system, sys) == 0)
- break;
- }
- }
- if (i == tep->nr_events)
- event = NULL;
-
- tep->last_event = event;
- return event;
-}
-
-static unsigned long long
-eval_num_arg(void *data, int size, struct tep_event *event, struct tep_print_arg *arg)
-{
- struct tep_handle *tep = event->tep;
- unsigned long long val = 0;
- unsigned long long left, right;
- struct tep_print_arg *typearg = NULL;
- struct tep_print_arg *larg;
- unsigned long offset;
- unsigned int field_size;
-
- switch (arg->type) {
- case TEP_PRINT_NULL:
- /* ?? */
- return 0;
- case TEP_PRINT_ATOM:
- return strtoull(arg->atom.atom, NULL, 0);
- case TEP_PRINT_FIELD:
- if (!arg->field.field) {
- arg->field.field = tep_find_any_field(event, arg->field.name);
- if (!arg->field.field)
- goto out_warning_field;
-
- }
- /* must be a number */
- val = tep_read_number(tep, data + arg->field.field->offset,
- arg->field.field->size);
- break;
- case TEP_PRINT_FLAGS:
- case TEP_PRINT_SYMBOL:
- case TEP_PRINT_INT_ARRAY:
- case TEP_PRINT_HEX:
- case TEP_PRINT_HEX_STR:
- break;
- case TEP_PRINT_TYPE:
- val = eval_num_arg(data, size, event, arg->typecast.item);
- return eval_type(val, arg, 0);
- case TEP_PRINT_STRING:
- case TEP_PRINT_BSTRING:
- case TEP_PRINT_BITMASK:
- return 0;
- case TEP_PRINT_FUNC: {
- struct trace_seq s;
- trace_seq_init(&s);
- val = process_defined_func(&s, data, size, event, arg);
- trace_seq_destroy(&s);
- return val;
- }
- case TEP_PRINT_OP:
- if (strcmp(arg->op.op, "[") == 0) {
- /*
- * Arrays are special, since we don't want
- * to read the arg as is.
- */
- right = eval_num_arg(data, size, event, arg->op.right);
-
- /* handle typecasts */
- larg = arg->op.left;
- while (larg->type == TEP_PRINT_TYPE) {
- if (!typearg)
- typearg = larg;
- larg = larg->typecast.item;
- }
-
- /* Default to long size */
- field_size = tep->long_size;
-
- switch (larg->type) {
- case TEP_PRINT_DYNAMIC_ARRAY:
- offset = tep_read_number(tep,
- data + larg->dynarray.field->offset,
- larg->dynarray.field->size);
- if (larg->dynarray.field->elementsize)
- field_size = larg->dynarray.field->elementsize;
- /*
- * The actual length of the dynamic array is stored
- * in the top half of the field, and the offset
- * is in the bottom half of the 32 bit field.
- */
- offset &= 0xffff;
- offset += right;
- break;
- case TEP_PRINT_FIELD:
- if (!larg->field.field) {
- larg->field.field =
- tep_find_any_field(event, larg->field.name);
- if (!larg->field.field) {
- arg = larg;
- goto out_warning_field;
- }
- }
- field_size = larg->field.field->elementsize;
- offset = larg->field.field->offset +
- right * larg->field.field->elementsize;
- break;
- default:
- goto default_op; /* oops, all bets off */
- }
- val = tep_read_number(tep,
- data + offset, field_size);
- if (typearg)
- val = eval_type(val, typearg, 1);
- break;
- } else if (strcmp(arg->op.op, "?") == 0) {
- left = eval_num_arg(data, size, event, arg->op.left);
- arg = arg->op.right;
- if (left)
- val = eval_num_arg(data, size, event, arg->op.left);
- else
- val = eval_num_arg(data, size, event, arg->op.right);
- break;
- }
- default_op:
- left = eval_num_arg(data, size, event, arg->op.left);
- right = eval_num_arg(data, size, event, arg->op.right);
- switch (arg->op.op[0]) {
- case '!':
- switch (arg->op.op[1]) {
- case 0:
- val = !right;
- break;
- case '=':
- val = left != right;
- break;
- default:
- goto out_warning_op;
- }
- break;
- case '~':
- val = ~right;
- break;
- case '|':
- if (arg->op.op[1])
- val = left || right;
- else
- val = left | right;
- break;
- case '&':
- if (arg->op.op[1])
- val = left && right;
- else
- val = left & right;
- break;
- case '<':
- switch (arg->op.op[1]) {
- case 0:
- val = left < right;
- break;
- case '<':
- val = left << right;
- break;
- case '=':
- val = left <= right;
- break;
- default:
- goto out_warning_op;
- }
- break;
- case '>':
- switch (arg->op.op[1]) {
- case 0:
- val = left > right;
- break;
- case '>':
- val = left >> right;
- break;
- case '=':
- val = left >= right;
- break;
- default:
- goto out_warning_op;
- }
- break;
- case '=':
- if (arg->op.op[1] != '=')
- goto out_warning_op;
-
- val = left == right;
- break;
- case '-':
- val = left - right;
- break;
- case '+':
- val = left + right;
- break;
- case '/':
- val = left / right;
- break;
- case '%':
- val = left % right;
- break;
- case '*':
- val = left * right;
- break;
- default:
- goto out_warning_op;
- }
- break;
- case TEP_PRINT_DYNAMIC_ARRAY_LEN:
- offset = tep_read_number(tep,
- data + arg->dynarray.field->offset,
- arg->dynarray.field->size);
- /*
- * The total allocated length of the dynamic array is
- * stored in the top half of the field, and the offset
- * is in the bottom half of the 32 bit field.
- */
- val = (unsigned long long)(offset >> 16);
- break;
- case TEP_PRINT_DYNAMIC_ARRAY:
- /* Without [], we pass the address to the dynamic data */
- offset = tep_read_number(tep,
- data + arg->dynarray.field->offset,
- arg->dynarray.field->size);
- /*
- * The total allocated length of the dynamic array is
- * stored in the top half of the field, and the offset
- * is in the bottom half of the 32 bit field.
- */
- offset &= 0xffff;
- val = (unsigned long long)((unsigned long)data + offset);
- break;
- default: /* not sure what to do there */
- return 0;
- }
- return val;
-
-out_warning_op:
- do_warning_event(event, "%s: unknown op '%s'", __func__, arg->op.op);
- return 0;
-
-out_warning_field:
- do_warning_event(event, "%s: field %s not found",
- __func__, arg->field.name);
- return 0;
-}
-
-struct flag {
- const char *name;
- unsigned long long value;
-};
-
-static const struct flag flags[] = {
- { "HI_SOFTIRQ", 0 },
- { "TIMER_SOFTIRQ", 1 },
- { "NET_TX_SOFTIRQ", 2 },
- { "NET_RX_SOFTIRQ", 3 },
- { "BLOCK_SOFTIRQ", 4 },
- { "IRQ_POLL_SOFTIRQ", 5 },
- { "TASKLET_SOFTIRQ", 6 },
- { "SCHED_SOFTIRQ", 7 },
- { "HRTIMER_SOFTIRQ", 8 },
- { "RCU_SOFTIRQ", 9 },
-
- { "HRTIMER_NORESTART", 0 },
- { "HRTIMER_RESTART", 1 },
-};
-
-static long long eval_flag(const char *flag)
-{
- int i;
-
- /*
- * Some flags in the format files do not get converted.
- * If the flag is not numeric, see if it is something that
- * we already know about.
- */
- if (isdigit(flag[0]))
- return strtoull(flag, NULL, 0);
-
- for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++)
- if (strcmp(flags[i].name, flag) == 0)
- return flags[i].value;
-
- return -1LL;
-}
-
-static void print_str_to_seq(struct trace_seq *s, const char *format,
- int len_arg, const char *str)
-{
- if (len_arg >= 0)
- trace_seq_printf(s, format, len_arg, str);
- else
- trace_seq_printf(s, format, str);
-}
-
-static void print_bitmask_to_seq(struct tep_handle *tep,
- struct trace_seq *s, const char *format,
- int len_arg, const void *data, int size)
-{
- int nr_bits = size * 8;
- int str_size = (nr_bits + 3) / 4;
- int len = 0;
- char buf[3];
- char *str;
- int index;
- int i;
-
- /*
- * The kernel likes to put in commas every 32 bits, we
- * can do the same.
- */
- str_size += (nr_bits - 1) / 32;
-
- str = malloc(str_size + 1);
- if (!str) {
- do_warning("%s: not enough memory!", __func__);
- return;
- }
- str[str_size] = 0;
-
- /* Start out with -2 for the two chars per byte */
- for (i = str_size - 2; i >= 0; i -= 2) {
- /*
- * data points to a bit mask of size bytes.
- * In the kernel, this is an array of long words, thus
- * endianness is very important.
- */
- if (tep->file_bigendian)
- index = size - (len + 1);
- else
- index = len;
-
- snprintf(buf, 3, "%02x", *((unsigned char *)data + index));
- memcpy(str + i, buf, 2);
- len++;
- if (!(len & 3) && i > 0) {
- i--;
- str[i] = ',';
- }
- }
-
- if (len_arg >= 0)
- trace_seq_printf(s, format, len_arg, str);
- else
- trace_seq_printf(s, format, str);
-
- free(str);
-}
-
-static void print_str_arg(struct trace_seq *s, void *data, int size,
- struct tep_event *event, const char *format,
- int len_arg, struct tep_print_arg *arg)
-{
- struct tep_handle *tep = event->tep;
- struct tep_print_flag_sym *flag;
- struct tep_format_field *field;
- struct printk_map *printk;
- long long val, fval;
- unsigned long long addr;
- char *str;
- unsigned char *hex;
- int print;
- int i, len;
-
- switch (arg->type) {
- case TEP_PRINT_NULL:
- /* ?? */
- return;
- case TEP_PRINT_ATOM:
- print_str_to_seq(s, format, len_arg, arg->atom.atom);
- return;
- case TEP_PRINT_FIELD:
- field = arg->field.field;
- if (!field) {
- field = tep_find_any_field(event, arg->field.name);
- if (!field) {
- str = arg->field.name;
- goto out_warning_field;
- }
- arg->field.field = field;
- }
- /* Zero sized fields, mean the rest of the data */
- len = field->size ? : size - field->offset;
-
- /*
- * Some events pass in pointers. If this is not an array
- * and the size is the same as long_size, assume that it
- * is a pointer.
- */
- if (!(field->flags & TEP_FIELD_IS_ARRAY) &&
- field->size == tep->long_size) {
-
- /* Handle heterogeneous recording and processing
- * architectures
- *
- * CASE I:
- * Traces recorded on 32-bit devices (32-bit
- * addressing) and processed on 64-bit devices:
- * In this case, only 32 bits should be read.
- *
- * CASE II:
- * Traces recorded on 64 bit devices and processed
- * on 32-bit devices:
- * In this case, 64 bits must be read.
- */
- addr = (tep->long_size == 8) ?
- *(unsigned long long *)(data + field->offset) :
- (unsigned long long)*(unsigned int *)(data + field->offset);
-
- /* Check if it matches a print format */
- printk = find_printk(tep, addr);
- if (printk)
- trace_seq_puts(s, printk->printk);
- else
- trace_seq_printf(s, "%llx", addr);
- break;
- }
- str = malloc(len + 1);
- if (!str) {
- do_warning_event(event, "%s: not enough memory!",
- __func__);
- return;
- }
- memcpy(str, data + field->offset, len);
- str[len] = 0;
- print_str_to_seq(s, format, len_arg, str);
- free(str);
- break;
- case TEP_PRINT_FLAGS:
- val = eval_num_arg(data, size, event, arg->flags.field);
- print = 0;
- for (flag = arg->flags.flags; flag; flag = flag->next) {
- fval = eval_flag(flag->value);
- if (!val && fval < 0) {
- print_str_to_seq(s, format, len_arg, flag->str);
- break;
- }
- if (fval > 0 && (val & fval) == fval) {
- if (print && arg->flags.delim)
- trace_seq_puts(s, arg->flags.delim);
- print_str_to_seq(s, format, len_arg, flag->str);
- print = 1;
- val &= ~fval;
- }
- }
- if (val) {
- if (print && arg->flags.delim)
- trace_seq_puts(s, arg->flags.delim);
- trace_seq_printf(s, "0x%llx", val);
- }
- break;
- case TEP_PRINT_SYMBOL:
- val = eval_num_arg(data, size, event, arg->symbol.field);
- for (flag = arg->symbol.symbols; flag; flag = flag->next) {
- fval = eval_flag(flag->value);
- if (val == fval) {
- print_str_to_seq(s, format, len_arg, flag->str);
- break;
- }
- }
- if (!flag)
- trace_seq_printf(s, "0x%llx", val);
- break;
- case TEP_PRINT_HEX:
- case TEP_PRINT_HEX_STR:
- if (arg->hex.field->type == TEP_PRINT_DYNAMIC_ARRAY) {
- unsigned long offset;
- offset = tep_read_number(tep,
- data + arg->hex.field->dynarray.field->offset,
- arg->hex.field->dynarray.field->size);
- hex = data + (offset & 0xffff);
- } else {
- field = arg->hex.field->field.field;
- if (!field) {
- str = arg->hex.field->field.name;
- field = tep_find_any_field(event, str);
- if (!field)
- goto out_warning_field;
- arg->hex.field->field.field = field;
- }
- hex = data + field->offset;
- }
- len = eval_num_arg(data, size, event, arg->hex.size);
- for (i = 0; i < len; i++) {
- if (i && arg->type == TEP_PRINT_HEX)
- trace_seq_putc(s, ' ');
- trace_seq_printf(s, "%02x", hex[i]);
- }
- break;
-
- case TEP_PRINT_INT_ARRAY: {
- void *num;
- int el_size;
-
- if (arg->int_array.field->type == TEP_PRINT_DYNAMIC_ARRAY) {
- unsigned long offset;
- struct tep_format_field *field =
- arg->int_array.field->dynarray.field;
- offset = tep_read_number(tep,
- data + field->offset,
- field->size);
- num = data + (offset & 0xffff);
- } else {
- field = arg->int_array.field->field.field;
- if (!field) {
- str = arg->int_array.field->field.name;
- field = tep_find_any_field(event, str);
- if (!field)
- goto out_warning_field;
- arg->int_array.field->field.field = field;
- }
- num = data + field->offset;
- }
- len = eval_num_arg(data, size, event, arg->int_array.count);
- el_size = eval_num_arg(data, size, event,
- arg->int_array.el_size);
- for (i = 0; i < len; i++) {
- if (i)
- trace_seq_putc(s, ' ');
-
- if (el_size == 1) {
- trace_seq_printf(s, "%u", *(uint8_t *)num);
- } else if (el_size == 2) {
- trace_seq_printf(s, "%u", *(uint16_t *)num);
- } else if (el_size == 4) {
- trace_seq_printf(s, "%u", *(uint32_t *)num);
- } else if (el_size == 8) {
- trace_seq_printf(s, "%"PRIu64, *(uint64_t *)num);
- } else {
- trace_seq_printf(s, "BAD SIZE:%d 0x%x",
- el_size, *(uint8_t *)num);
- el_size = 1;
- }
-
- num += el_size;
- }
- break;
- }
- case TEP_PRINT_TYPE:
- break;
- case TEP_PRINT_STRING: {
- int str_offset;
-
- if (!arg->string.field)
- arg->string.field = tep_find_any_field(event, arg->string.string);
- if (!arg->string.field)
- break;
-
- str_offset = data2host4(tep,
- *(unsigned int *)(data + arg->string.field->offset));
- str_offset &= 0xffff;
- if (arg->string.field->flags & TEP_FIELD_IS_RELATIVE)
- str_offset += arg->string.field->offset + arg->string.field->size;
- print_str_to_seq(s, format, len_arg, ((char *)data) + str_offset);
- break;
- }
- case TEP_PRINT_BSTRING:
- print_str_to_seq(s, format, len_arg, arg->string.string);
- break;
- case TEP_PRINT_BITMASK: {
- int bitmask_offset;
- int bitmask_size;
-
- if (!arg->bitmask.field)
- arg->bitmask.field = tep_find_any_field(event, arg->bitmask.bitmask);
- if (!arg->bitmask.field)
- break;
- bitmask_offset = data2host4(tep,
- *(unsigned int *)(data + arg->bitmask.field->offset));
- bitmask_size = bitmask_offset >> 16;
- bitmask_offset &= 0xffff;
- if (arg->bitmask.field->flags & TEP_FIELD_IS_RELATIVE)
- bitmask_offset += arg->bitmask.field->offset + arg->bitmask.field->size;
- print_bitmask_to_seq(tep, s, format, len_arg,
- data + bitmask_offset, bitmask_size);
- break;
- }
- case TEP_PRINT_OP:
- /*
- * The only op for string should be ? :
- */
- if (arg->op.op[0] != '?')
- return;
- val = eval_num_arg(data, size, event, arg->op.left);
- if (val)
- print_str_arg(s, data, size, event,
- format, len_arg, arg->op.right->op.left);
- else
- print_str_arg(s, data, size, event,
- format, len_arg, arg->op.right->op.right);
- break;
- case TEP_PRINT_FUNC:
- process_defined_func(s, data, size, event, arg);
- break;
- default:
- /* well... */
- break;
- }
-
- return;
-
-out_warning_field:
- do_warning_event(event, "%s: field %s not found",
- __func__, arg->field.name);
-}
-
-static unsigned long long
-process_defined_func(struct trace_seq *s, void *data, int size,
- struct tep_event *event, struct tep_print_arg *arg)
-{
- struct tep_function_handler *func_handle = arg->func.func;
- struct func_params *param;
- unsigned long long *args;
- unsigned long long ret;
- struct tep_print_arg *farg;
- struct trace_seq str;
- struct save_str {
- struct save_str *next;
- char *str;
- } *strings = NULL, *string;
- int i;
-
- if (!func_handle->nr_args) {
- ret = (*func_handle->func)(s, NULL);
- goto out;
- }
-
- farg = arg->func.args;
- param = func_handle->params;
-
- ret = ULLONG_MAX;
- args = malloc(sizeof(*args) * func_handle->nr_args);
- if (!args)
- goto out;
-
- for (i = 0; i < func_handle->nr_args; i++) {
- switch (param->type) {
- case TEP_FUNC_ARG_INT:
- case TEP_FUNC_ARG_LONG:
- case TEP_FUNC_ARG_PTR:
- args[i] = eval_num_arg(data, size, event, farg);
- break;
- case TEP_FUNC_ARG_STRING:
- trace_seq_init(&str);
- print_str_arg(&str, data, size, event, "%s", -1, farg);
- trace_seq_terminate(&str);
- string = malloc(sizeof(*string));
- if (!string) {
- do_warning_event(event, "%s(%d): malloc str",
- __func__, __LINE__);
- goto out_free;
- }
- string->next = strings;
- string->str = strdup(str.buffer);
- if (!string->str) {
- free(string);
- do_warning_event(event, "%s(%d): malloc str",
- __func__, __LINE__);
- goto out_free;
- }
- args[i] = (uintptr_t)string->str;
- strings = string;
- trace_seq_destroy(&str);
- break;
- default:
- /*
- * Something went totally wrong, this is not
- * an input error, something in this code broke.
- */
- do_warning_event(event, "Unexpected end of arguments\n");
- goto out_free;
- }
- farg = farg->next;
- param = param->next;
- }
-
- ret = (*func_handle->func)(s, args);
-out_free:
- free(args);
- while (strings) {
- string = strings;
- strings = string->next;
- free(string->str);
- free(string);
- }
-
- out:
- /* TBD : handle return type here */
- return ret;
-}
-
-static void free_args(struct tep_print_arg *args)
-{
- struct tep_print_arg *next;
-
- while (args) {
- next = args->next;
-
- free_arg(args);
- args = next;
- }
-}
-
-static struct tep_print_arg *make_bprint_args(char *fmt, void *data, int size, struct tep_event *event)
-{
- struct tep_handle *tep = event->tep;
- struct tep_format_field *field, *ip_field;
- struct tep_print_arg *args, *arg, **next;
- unsigned long long ip, val;
- char *ptr;
- void *bptr;
- int vsize = 0;
-
- field = tep->bprint_buf_field;
- ip_field = tep->bprint_ip_field;
-
- if (!field) {
- field = tep_find_field(event, "buf");
- if (!field) {
- do_warning_event(event, "can't find buffer field for binary printk");
- return NULL;
- }
- ip_field = tep_find_field(event, "ip");
- if (!ip_field) {
- do_warning_event(event, "can't find ip field for binary printk");
- return NULL;
- }
- tep->bprint_buf_field = field;
- tep->bprint_ip_field = ip_field;
- }
-
- ip = tep_read_number(tep, data + ip_field->offset, ip_field->size);
-
- /*
- * The first arg is the IP pointer.
- */
- args = alloc_arg();
- if (!args) {
- do_warning_event(event, "%s(%d): not enough memory!",
- __func__, __LINE__);
- return NULL;
- }
- arg = args;
- arg->next = NULL;
- next = &arg->next;
-
- arg->type = TEP_PRINT_ATOM;
-
- if (asprintf(&arg->atom.atom, "%lld", ip) < 0)
- goto out_free;
-
- /* skip the first "%ps: " */
- for (ptr = fmt + 5, bptr = data + field->offset;
- bptr < data + size && *ptr; ptr++) {
- int ls = 0;
-
- if (*ptr == '%') {
- process_again:
- ptr++;
- switch (*ptr) {
- case '%':
- break;
- case 'l':
- ls++;
- goto process_again;
- case 'L':
- ls = 2;
- goto process_again;
- case '0' ... '9':
- goto process_again;
- case '.':
- goto process_again;
- case 'z':
- case 'Z':
- ls = 1;
- goto process_again;
- case 'p':
- ls = 1;
- if (isalnum(ptr[1])) {
- ptr++;
- /* Check for special pointers */
- switch (*ptr) {
- case 's':
- case 'S':
- case 'x':
- break;
- case 'f':
- case 'F':
- /*
- * Pre-5.5 kernels use %pf and
- * %pF for printing symbols
- * while kernels since 5.5 use
- * %pfw for fwnodes. So check
- * %p[fF] isn't followed by 'w'.
- */
- if (ptr[1] != 'w')
- break;
- /* fall through */
- default:
- /*
- * Older kernels do not process
- * dereferenced pointers.
- * Only process if the pointer
- * value is a printable.
- */
- if (isprint(*(char *)bptr))
- goto process_string;
- }
- }
- /* fall through */
- case 'd':
- case 'u':
- case 'i':
- case 'x':
- case 'X':
- case 'o':
- switch (ls) {
- case 0:
- vsize = 4;
- break;
- case 1:
- vsize = tep->long_size;
- break;
- case 2:
- vsize = 8;
- break;
- default:
- vsize = ls; /* ? */
- break;
- }
- /* fall through */
- case '*':
- if (*ptr == '*')
- vsize = 4;
-
- /* the pointers are always 4 bytes aligned */
- bptr = (void *)(((unsigned long)bptr + 3) &
- ~3);
- val = tep_read_number(tep, bptr, vsize);
- bptr += vsize;
- arg = alloc_arg();
- if (!arg) {
- do_warning_event(event, "%s(%d): not enough memory!",
- __func__, __LINE__);
- goto out_free;
- }
- arg->next = NULL;
- arg->type = TEP_PRINT_ATOM;
- if (asprintf(&arg->atom.atom, "%lld", val) < 0) {
- free(arg);
- goto out_free;
- }
- *next = arg;
- next = &arg->next;
- /*
- * The '*' case means that an arg is used as the length.
- * We need to continue to figure out for what.
- */
- if (*ptr == '*')
- goto process_again;
-
- break;
- case 's':
- process_string:
- arg = alloc_arg();
- if (!arg) {
- do_warning_event(event, "%s(%d): not enough memory!",
- __func__, __LINE__);
- goto out_free;
- }
- arg->next = NULL;
- arg->type = TEP_PRINT_BSTRING;
- arg->string.string = strdup(bptr);
- if (!arg->string.string)
- goto out_free;
- bptr += strlen(bptr) + 1;
- *next = arg;
- next = &arg->next;
- default:
- break;
- }
- }
- }
-
- return args;
-
-out_free:
- free_args(args);
- return NULL;
-}
-
-static char *
-get_bprint_format(void *data, int size __maybe_unused,
- struct tep_event *event)
-{
- struct tep_handle *tep = event->tep;
- unsigned long long addr;
- struct tep_format_field *field;
- struct printk_map *printk;
- char *format;
-
- field = tep->bprint_fmt_field;
-
- if (!field) {
- field = tep_find_field(event, "fmt");
- if (!field) {
- do_warning_event(event, "can't find format field for binary printk");
- return NULL;
- }
- tep->bprint_fmt_field = field;
- }
-
- addr = tep_read_number(tep, data + field->offset, field->size);
-
- printk = find_printk(tep, addr);
- if (!printk) {
- if (asprintf(&format, "%%ps: (NO FORMAT FOUND at %llx)\n", addr) < 0)
- return NULL;
- return format;
- }
-
- if (asprintf(&format, "%s: %s", "%ps", printk->printk) < 0)
- return NULL;
-
- return format;
-}
-
-static int print_mac_arg(struct trace_seq *s, const char *format,
- void *data, int size, struct tep_event *event,
- struct tep_print_arg *arg)
-{
- const char *fmt = "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x";
- bool reverse = false;
- unsigned char *buf;
- int ret = 0;
-
- if (arg->type == TEP_PRINT_FUNC) {
- process_defined_func(s, data, size, event, arg);
- return 0;
- }
-
- if (arg->type != TEP_PRINT_FIELD) {
- trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d",
- arg->type);
- return 0;
- }
-
- if (format[0] == 'm') {
- fmt = "%.2x%.2x%.2x%.2x%.2x%.2x";
- } else if (format[0] == 'M' && format[1] == 'F') {
- fmt = "%.2x-%.2x-%.2x-%.2x-%.2x-%.2x";
- ret++;
- }
- if (format[1] == 'R') {
- reverse = true;
- ret++;
- }
-
- if (!arg->field.field) {
- arg->field.field =
- tep_find_any_field(event, arg->field.name);
- if (!arg->field.field) {
- do_warning_event(event, "%s: field %s not found",
- __func__, arg->field.name);
- return ret;
- }
- }
- if (arg->field.field->size != 6) {
- trace_seq_printf(s, "INVALIDMAC");
- return ret;
- }
-
- buf = data + arg->field.field->offset;
- if (reverse)
- trace_seq_printf(s, fmt, buf[5], buf[4], buf[3], buf[2], buf[1], buf[0]);
- else
- trace_seq_printf(s, fmt, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]);
-
- return ret;
-}
-
-static int parse_ip4_print_args(struct tep_handle *tep,
- const char *ptr, bool *reverse)
-{
- int ret = 0;
-
- *reverse = false;
-
- /* hnbl */
- switch (*ptr) {
- case 'h':
- if (tep->file_bigendian)
- *reverse = false;
- else
- *reverse = true;
- ret++;
- break;
- case 'l':
- *reverse = true;
- ret++;
- break;
- case 'n':
- case 'b':
- ret++;
- /* fall through */
- default:
- *reverse = false;
- break;
- }
-
- return ret;
-}
-
-static void print_ip4_addr(struct trace_seq *s, char i, bool reverse, unsigned char *buf)
-{
- const char *fmt;
-
- if (i == 'i')
- fmt = "%03d.%03d.%03d.%03d";
- else
- fmt = "%d.%d.%d.%d";
-
- if (reverse)
- trace_seq_printf(s, fmt, buf[3], buf[2], buf[1], buf[0]);
- else
- trace_seq_printf(s, fmt, buf[0], buf[1], buf[2], buf[3]);
-
-}
-
-static inline bool ipv6_addr_v4mapped(const struct in6_addr *a)
-{
- return ((unsigned long)(a->s6_addr32[0] | a->s6_addr32[1]) |
- (unsigned long)(a->s6_addr32[2] ^ htonl(0x0000ffff))) == 0UL;
-}
-
-static inline bool ipv6_addr_is_isatap(const struct in6_addr *addr)
-{
- return (addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE);
-}
-
-static void print_ip6c_addr(struct trace_seq *s, unsigned char *addr)
-{
- int i, j, range;
- unsigned char zerolength[8];
- int longest = 1;
- int colonpos = -1;
- uint16_t word;
- uint8_t hi, lo;
- bool needcolon = false;
- bool useIPv4;
- struct in6_addr in6;
-
- memcpy(&in6, addr, sizeof(struct in6_addr));
-
- useIPv4 = ipv6_addr_v4mapped(&in6) || ipv6_addr_is_isatap(&in6);
-
- memset(zerolength, 0, sizeof(zerolength));
-
- if (useIPv4)
- range = 6;
- else
- range = 8;
-
- /* find position of longest 0 run */
- for (i = 0; i < range; i++) {
- for (j = i; j < range; j++) {
- if (in6.s6_addr16[j] != 0)
- break;
- zerolength[i]++;
- }
- }
- for (i = 0; i < range; i++) {
- if (zerolength[i] > longest) {
- longest = zerolength[i];
- colonpos = i;
- }
- }
- if (longest == 1) /* don't compress a single 0 */
- colonpos = -1;
-
- /* emit address */
- for (i = 0; i < range; i++) {
- if (i == colonpos) {
- if (needcolon || i == 0)
- trace_seq_printf(s, ":");
- trace_seq_printf(s, ":");
- needcolon = false;
- i += longest - 1;
- continue;
- }
- if (needcolon) {
- trace_seq_printf(s, ":");
- needcolon = false;
- }
- /* hex u16 without leading 0s */
- word = ntohs(in6.s6_addr16[i]);
- hi = word >> 8;
- lo = word & 0xff;
- if (hi)
- trace_seq_printf(s, "%x%02x", hi, lo);
- else
- trace_seq_printf(s, "%x", lo);
-
- needcolon = true;
- }
-
- if (useIPv4) {
- if (needcolon)
- trace_seq_printf(s, ":");
- print_ip4_addr(s, 'I', false, &in6.s6_addr[12]);
- }
-
- return;
-}
-
-static void print_ip6_addr(struct trace_seq *s, char i, unsigned char *buf)
-{
- int j;
-
- for (j = 0; j < 16; j += 2) {
- trace_seq_printf(s, "%02x%02x", buf[j], buf[j+1]);
- if (i == 'I' && j < 14)
- trace_seq_printf(s, ":");
- }
-}
-
-/*
- * %pi4 print an IPv4 address with leading zeros
- * %pI4 print an IPv4 address without leading zeros
- * %pi6 print an IPv6 address without colons
- * %pI6 print an IPv6 address with colons
- * %pI6c print an IPv6 address in compressed form with colons
- * %pISpc print an IP address based on sockaddr; p adds port.
- */
-static int print_ipv4_arg(struct trace_seq *s, const char *ptr, char i,
- void *data, int size, struct tep_event *event,
- struct tep_print_arg *arg)
-{
- bool reverse = false;
- unsigned char *buf;
- int ret;
-
- ret = parse_ip4_print_args(event->tep, ptr, &reverse);
-
- if (arg->type == TEP_PRINT_FUNC) {
- process_defined_func(s, data, size, event, arg);
- return ret;
- }
-
- if (arg->type != TEP_PRINT_FIELD) {
- trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type);
- return ret;
- }
-
- if (!arg->field.field) {
- arg->field.field =
- tep_find_any_field(event, arg->field.name);
- if (!arg->field.field) {
- do_warning("%s: field %s not found",
- __func__, arg->field.name);
- return ret;
- }
- }
-
- buf = data + arg->field.field->offset;
-
- if (arg->field.field->size != 4) {
- trace_seq_printf(s, "INVALIDIPv4");
- return ret;
- }
-
- print_ip4_addr(s, i, reverse, buf);
- return ret;
-
-}
-
-static int print_ipv6_arg(struct trace_seq *s, const char *ptr, char i,
- void *data, int size, struct tep_event *event,
- struct tep_print_arg *arg)
-{
- char have_c = 0;
- unsigned char *buf;
- int rc = 0;
-
- /* pI6c */
- if (i == 'I' && *ptr == 'c') {
- have_c = 1;
- ptr++;
- rc++;
- }
-
- if (arg->type == TEP_PRINT_FUNC) {
- process_defined_func(s, data, size, event, arg);
- return rc;
- }
-
- if (arg->type != TEP_PRINT_FIELD) {
- trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type);
- return rc;
- }
-
- if (!arg->field.field) {
- arg->field.field =
- tep_find_any_field(event, arg->field.name);
- if (!arg->field.field) {
- do_warning("%s: field %s not found",
- __func__, arg->field.name);
- return rc;
- }
- }
-
- buf = data + arg->field.field->offset;
-
- if (arg->field.field->size != 16) {
- trace_seq_printf(s, "INVALIDIPv6");
- return rc;
- }
-
- if (have_c)
- print_ip6c_addr(s, buf);
- else
- print_ip6_addr(s, i, buf);
-
- return rc;
-}
-
-static int print_ipsa_arg(struct trace_seq *s, const char *ptr, char i,
- void *data, int size, struct tep_event *event,
- struct tep_print_arg *arg)
-{
- char have_c = 0, have_p = 0;
- unsigned char *buf;
- struct sockaddr_storage *sa;
- bool reverse = false;
- int rc = 0;
- int ret;
-
- /* pISpc */
- if (i == 'I') {
- if (*ptr == 'p') {
- have_p = 1;
- ptr++;
- rc++;
- }
- if (*ptr == 'c') {
- have_c = 1;
- ptr++;
- rc++;
- }
- }
- ret = parse_ip4_print_args(event->tep, ptr, &reverse);
- ptr += ret;
- rc += ret;
-
- if (arg->type == TEP_PRINT_FUNC) {
- process_defined_func(s, data, size, event, arg);
- return rc;
- }
-
- if (arg->type != TEP_PRINT_FIELD) {
- trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type);
- return rc;
- }
-
- if (!arg->field.field) {
- arg->field.field =
- tep_find_any_field(event, arg->field.name);
- if (!arg->field.field) {
- do_warning("%s: field %s not found",
- __func__, arg->field.name);
- return rc;
- }
- }
-
- sa = (struct sockaddr_storage *) (data + arg->field.field->offset);
-
- if (sa->ss_family == AF_INET) {
- struct sockaddr_in *sa4 = (struct sockaddr_in *) sa;
-
- if (arg->field.field->size < sizeof(struct sockaddr_in)) {
- trace_seq_printf(s, "INVALIDIPv4");
- return rc;
- }
-
- print_ip4_addr(s, i, reverse, (unsigned char *) &sa4->sin_addr);
- if (have_p)
- trace_seq_printf(s, ":%d", ntohs(sa4->sin_port));
-
-
- } else if (sa->ss_family == AF_INET6) {
- struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) sa;
-
- if (arg->field.field->size < sizeof(struct sockaddr_in6)) {
- trace_seq_printf(s, "INVALIDIPv6");
- return rc;
- }
-
- if (have_p)
- trace_seq_printf(s, "[");
-
- buf = (unsigned char *) &sa6->sin6_addr;
- if (have_c)
- print_ip6c_addr(s, buf);
- else
- print_ip6_addr(s, i, buf);
-
- if (have_p)
- trace_seq_printf(s, "]:%d", ntohs(sa6->sin6_port));
- }
-
- return rc;
-}
-
-static int print_ip_arg(struct trace_seq *s, const char *ptr,
- void *data, int size, struct tep_event *event,
- struct tep_print_arg *arg)
-{
- char i = *ptr; /* 'i' or 'I' */
- int rc = 1;
-
- /* IP version */
- ptr++;
-
- switch (*ptr) {
- case '4':
- rc += print_ipv4_arg(s, ptr + 1, i, data, size, event, arg);
- break;
- case '6':
- rc += print_ipv6_arg(s, ptr + 1, i, data, size, event, arg);
- break;
- case 'S':
- rc += print_ipsa_arg(s, ptr + 1, i, data, size, event, arg);
- break;
- default:
- return 0;
- }
-
- return rc;
-}
-
-static const int guid_index[16] = {3, 2, 1, 0, 5, 4, 7, 6, 8, 9, 10, 11, 12, 13, 14, 15};
-static const int uuid_index[16] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
-
-static int print_uuid_arg(struct trace_seq *s, const char *ptr,
- void *data, int size, struct tep_event *event,
- struct tep_print_arg *arg)
-{
- const int *index = uuid_index;
- char *format = "%02x";
- int ret = 0;
- char *buf;
- int i;
-
- switch (*(ptr + 1)) {
- case 'L':
- format = "%02X";
- /* fall through */
- case 'l':
- index = guid_index;
- ret++;
- break;
- case 'B':
- format = "%02X";
- /* fall through */
- case 'b':
- ret++;
- break;
- }
-
- if (arg->type == TEP_PRINT_FUNC) {
- process_defined_func(s, data, size, event, arg);
- return ret;
- }
-
- if (arg->type != TEP_PRINT_FIELD) {
- trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type);
- return ret;
- }
-
- if (!arg->field.field) {
- arg->field.field =
- tep_find_any_field(event, arg->field.name);
- if (!arg->field.field) {
- do_warning("%s: field %s not found",
- __func__, arg->field.name);
- return ret;
- }
- }
-
- if (arg->field.field->size != 16) {
- trace_seq_printf(s, "INVALIDUUID");
- return ret;
- }
-
- buf = data + arg->field.field->offset;
-
- for (i = 0; i < 16; i++) {
- trace_seq_printf(s, format, buf[index[i]] & 0xff);
- switch (i) {
- case 3:
- case 5:
- case 7:
- case 9:
- trace_seq_printf(s, "-");
- break;
- }
- }
-
- return ret;
-}
-
-static int print_raw_buff_arg(struct trace_seq *s, const char *ptr,
- void *data, int size, struct tep_event *event,
- struct tep_print_arg *arg, int print_len)
-{
- int plen = print_len;
- char *delim = " ";
- int ret = 0;
- char *buf;
- int i;
- unsigned long offset;
- int arr_len;
-
- switch (*(ptr + 1)) {
- case 'C':
- delim = ":";
- ret++;
- break;
- case 'D':
- delim = "-";
- ret++;
- break;
- case 'N':
- delim = "";
- ret++;
- break;
- }
-
- if (arg->type == TEP_PRINT_FUNC) {
- process_defined_func(s, data, size, event, arg);
- return ret;
- }
-
- if (arg->type != TEP_PRINT_DYNAMIC_ARRAY) {
- trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type);
- return ret;
- }
-
- offset = tep_read_number(event->tep,
- data + arg->dynarray.field->offset,
- arg->dynarray.field->size);
- arr_len = (unsigned long long)(offset >> 16);
- buf = data + (offset & 0xffff);
-
- if (arr_len < plen)
- plen = arr_len;
-
- if (plen < 1)
- return ret;
-
- trace_seq_printf(s, "%02x", buf[0] & 0xff);
- for (i = 1; i < plen; i++)
- trace_seq_printf(s, "%s%02x", delim, buf[i] & 0xff);
-
- return ret;
-}
-
-static int is_printable_array(char *p, unsigned int len)
-{
- unsigned int i;
-
- for (i = 0; i < len && p[i]; i++)
- if (!isprint(p[i]) && !isspace(p[i]))
- return 0;
- return 1;
-}
-
-void tep_print_field(struct trace_seq *s, void *data,
- struct tep_format_field *field)
-{
- unsigned long long val;
- unsigned int offset, len, i;
- struct tep_handle *tep = field->event->tep;
-
- if (field->flags & TEP_FIELD_IS_ARRAY) {
- offset = field->offset;
- len = field->size;
- if (field->flags & TEP_FIELD_IS_DYNAMIC) {
- val = tep_read_number(tep, data + offset, len);
- offset = val;
- len = offset >> 16;
- offset &= 0xffff;
- if (field->flags & TEP_FIELD_IS_RELATIVE)
- offset += field->offset + field->size;
- }
- if (field->flags & TEP_FIELD_IS_STRING &&
- is_printable_array(data + offset, len)) {
- trace_seq_printf(s, "%s", (char *)data + offset);
- } else {
- trace_seq_puts(s, "ARRAY[");
- for (i = 0; i < len; i++) {
- if (i)
- trace_seq_puts(s, ", ");
- trace_seq_printf(s, "%02x",
- *((unsigned char *)data + offset + i));
- }
- trace_seq_putc(s, ']');
- field->flags &= ~TEP_FIELD_IS_STRING;
- }
- } else {
- val = tep_read_number(tep, data + field->offset,
- field->size);
- if (field->flags & TEP_FIELD_IS_POINTER) {
- trace_seq_printf(s, "0x%llx", val);
- } else if (field->flags & TEP_FIELD_IS_SIGNED) {
- switch (field->size) {
- case 4:
- /*
- * If field is long then print it in hex.
- * A long usually stores pointers.
- */
- if (field->flags & TEP_FIELD_IS_LONG)
- trace_seq_printf(s, "0x%x", (int)val);
- else
- trace_seq_printf(s, "%d", (int)val);
- break;
- case 2:
- trace_seq_printf(s, "%2d", (short)val);
- break;
- case 1:
- trace_seq_printf(s, "%1d", (char)val);
- break;
- default:
- trace_seq_printf(s, "%lld", val);
- }
- } else {
- if (field->flags & TEP_FIELD_IS_LONG)
- trace_seq_printf(s, "0x%llx", val);
- else
- trace_seq_printf(s, "%llu", val);
- }
- }
-}
-
-void tep_print_fields(struct trace_seq *s, void *data,
- int size __maybe_unused, struct tep_event *event)
-{
- struct tep_format_field *field;
-
- field = event->format.fields;
- while (field) {
- trace_seq_printf(s, " %s=", field->name);
- tep_print_field(s, data, field);
- field = field->next;
- }
-}
-
-static int print_function(struct trace_seq *s, const char *format,
- void *data, int size, struct tep_event *event,
- struct tep_print_arg *arg)
-{
- struct func_map *func;
- unsigned long long val;
-
- val = eval_num_arg(data, size, event, arg);
- func = find_func(event->tep, val);
- if (func) {
- trace_seq_puts(s, func->func);
- if (*format == 'F' || *format == 'S')
- trace_seq_printf(s, "+0x%llx", val - func->addr);
- } else {
- if (event->tep->long_size == 4)
- trace_seq_printf(s, "0x%lx", (long)val);
- else
- trace_seq_printf(s, "0x%llx", (long long)val);
- }
-
- return 0;
-}
-
-static int print_arg_pointer(struct trace_seq *s, const char *format, int plen,
- void *data, int size,
- struct tep_event *event, struct tep_print_arg *arg)
-{
- unsigned long long val;
- int ret = 1;
-
- if (arg->type == TEP_PRINT_BSTRING) {
- trace_seq_puts(s, arg->string.string);
- return 0;
- }
- while (*format) {
- if (*format == 'p') {
- format++;
- break;
- }
- format++;
- }
-
- switch (*format) {
- case 'F':
- case 'f':
- case 'S':
- case 's':
- ret += print_function(s, format, data, size, event, arg);
- break;
- case 'M':
- case 'm':
- ret += print_mac_arg(s, format, data, size, event, arg);
- break;
- case 'I':
- case 'i':
- ret += print_ip_arg(s, format, data, size, event, arg);
- break;
- case 'U':
- ret += print_uuid_arg(s, format, data, size, event, arg);
- break;
- case 'h':
- ret += print_raw_buff_arg(s, format, data, size, event, arg, plen);
- break;
- default:
- ret = 0;
- val = eval_num_arg(data, size, event, arg);
- trace_seq_printf(s, "%p", (void *)(intptr_t)val);
- break;
- }
-
- return ret;
-
-}
-
-static int print_arg_number(struct trace_seq *s, const char *format, int plen,
- void *data, int size, int ls,
- struct tep_event *event, struct tep_print_arg *arg)
-{
- unsigned long long val;
-
- val = eval_num_arg(data, size, event, arg);
-
- switch (ls) {
- case -2:
- if (plen >= 0)
- trace_seq_printf(s, format, plen, (char)val);
- else
- trace_seq_printf(s, format, (char)val);
- break;
- case -1:
- if (plen >= 0)
- trace_seq_printf(s, format, plen, (short)val);
- else
- trace_seq_printf(s, format, (short)val);
- break;
- case 0:
- if (plen >= 0)
- trace_seq_printf(s, format, plen, (int)val);
- else
- trace_seq_printf(s, format, (int)val);
- break;
- case 1:
- if (plen >= 0)
- trace_seq_printf(s, format, plen, (long)val);
- else
- trace_seq_printf(s, format, (long)val);
- break;
- case 2:
- if (plen >= 0)
- trace_seq_printf(s, format, plen, (long long)val);
- else
- trace_seq_printf(s, format, (long long)val);
- break;
- default:
- do_warning_event(event, "bad count (%d)", ls);
- event->flags |= TEP_EVENT_FL_FAILED;
- }
- return 0;
-}
-
-
-static void print_arg_string(struct trace_seq *s, const char *format, int plen,
- void *data, int size,
- struct tep_event *event, struct tep_print_arg *arg)
-{
- struct trace_seq p;
-
- /* Use helper trace_seq */
- trace_seq_init(&p);
- print_str_arg(&p, data, size, event,
- format, plen, arg);
- trace_seq_terminate(&p);
- trace_seq_puts(s, p.buffer);
- trace_seq_destroy(&p);
-}
-
-static int parse_arg_format_pointer(const char *format)
-{
- int ret = 0;
- int index;
- int loop;
-
- switch (*format) {
- case 'F':
- case 'S':
- case 'f':
- case 's':
- ret++;
- break;
- case 'M':
- case 'm':
- /* [mM]R , [mM]F */
- switch (format[1]) {
- case 'R':
- case 'F':
- ret++;
- break;
- }
- ret++;
- break;
- case 'I':
- case 'i':
- index = 2;
- loop = 1;
- switch (format[1]) {
- case 'S':
- /*[S][pfs]*/
- while (loop) {
- switch (format[index]) {
- case 'p':
- case 'f':
- case 's':
- ret++;
- index++;
- break;
- default:
- loop = 0;
- break;
- }
- }
- /* fall through */
- case '4':
- /* [4S][hnbl] */
- switch (format[index]) {
- case 'h':
- case 'n':
- case 'l':
- case 'b':
- ret++;
- index++;
- break;
- }
- if (format[1] == '4') {
- ret++;
- break;
- }
- /* fall through */
- case '6':
- /* [6S]c */
- if (format[index] == 'c')
- ret++;
- ret++;
- break;
- }
- ret++;
- break;
- case 'U':
- switch (format[1]) {
- case 'L':
- case 'l':
- case 'B':
- case 'b':
- ret++;
- break;
- }
- ret++;
- break;
- case 'h':
- switch (format[1]) {
- case 'C':
- case 'D':
- case 'N':
- ret++;
- break;
- }
- ret++;
- break;
- default:
- break;
- }
-
- return ret;
-}
-
-static void free_parse_args(struct tep_print_parse *arg)
-{
- struct tep_print_parse *del;
-
- while (arg) {
- del = arg;
- arg = del->next;
- free(del->format);
- free(del);
- }
-}
-
-static int parse_arg_add(struct tep_print_parse **parse, char *format,
- enum tep_print_parse_type type,
- struct tep_print_arg *arg,
- struct tep_print_arg *len_as_arg,
- int ls)
-{
- struct tep_print_parse *parg = NULL;
-
- parg = calloc(1, sizeof(*parg));
- if (!parg)
- goto error;
- parg->format = strdup(format);
- if (!parg->format)
- goto error;
- parg->type = type;
- parg->arg = arg;
- parg->len_as_arg = len_as_arg;
- parg->ls = ls;
- *parse = parg;
- return 0;
-error:
- if (parg) {
- free(parg->format);
- free(parg);
- }
- return -1;
-}
-
-static int parse_arg_format(struct tep_print_parse **parse,
- struct tep_event *event,
- const char *format, struct tep_print_arg **arg)
-{
- struct tep_print_arg *len_arg = NULL;
- char print_format[32];
- const char *start = format;
- int ret = 0;
- int ls = 0;
- int res;
- int len;
-
- format++;
- ret++;
- for (; *format; format++) {
- switch (*format) {
- case '#':
- /* FIXME: need to handle properly */
- break;
- case 'h':
- ls--;
- break;
- case 'l':
- ls++;
- break;
- case 'L':
- ls = 2;
- break;
- case '.':
- case 'z':
- case 'Z':
- case '0' ... '9':
- case '-':
- break;
- case '*':
- /* The argument is the length. */
- if (!*arg) {
- do_warning_event(event, "no argument match");
- event->flags |= TEP_EVENT_FL_FAILED;
- goto out_failed;
- }
- if (len_arg) {
- do_warning_event(event, "argument already matched");
- event->flags |= TEP_EVENT_FL_FAILED;
- goto out_failed;
- }
- len_arg = *arg;
- *arg = (*arg)->next;
- break;
- case 'p':
- if (!*arg) {
- do_warning_event(event, "no argument match");
- event->flags |= TEP_EVENT_FL_FAILED;
- goto out_failed;
- }
- res = parse_arg_format_pointer(format + 1);
- if (res > 0) {
- format += res;
- ret += res;
- }
- len = ((unsigned long)format + 1) -
- (unsigned long)start;
- /* should never happen */
- if (len > 31) {
- do_warning_event(event, "bad format!");
- event->flags |= TEP_EVENT_FL_FAILED;
- len = 31;
- }
- memcpy(print_format, start, len);
- print_format[len] = 0;
-
- parse_arg_add(parse, print_format,
- PRINT_FMT_ARG_POINTER, *arg, len_arg, ls);
- *arg = (*arg)->next;
- ret++;
- return ret;
- case 'd':
- case 'u':
- case 'i':
- case 'x':
- case 'X':
- case 'o':
- if (!*arg) {
- do_warning_event(event, "no argument match");
- event->flags |= TEP_EVENT_FL_FAILED;
- goto out_failed;
- }
-
- len = ((unsigned long)format + 1) -
- (unsigned long)start;
-
- /* should never happen */
- if (len > 30) {
- do_warning_event(event, "bad format!");
- event->flags |= TEP_EVENT_FL_FAILED;
- len = 31;
- }
- memcpy(print_format, start, len);
- print_format[len] = 0;
-
- if (event->tep->long_size == 8 && ls == 1 &&
- sizeof(long) != 8) {
- char *p;
-
- /* make %l into %ll */
- if (ls == 1 && (p = strchr(print_format, 'l')))
- memmove(p+1, p, strlen(p)+1);
- ls = 2;
- }
- if (ls < -2 || ls > 2) {
- do_warning_event(event, "bad count (%d)", ls);
- event->flags |= TEP_EVENT_FL_FAILED;
- }
- parse_arg_add(parse, print_format,
- PRINT_FMT_ARG_DIGIT, *arg, len_arg, ls);
- *arg = (*arg)->next;
- ret++;
- return ret;
- case 's':
- if (!*arg) {
- do_warning_event(event, "no matching argument");
- event->flags |= TEP_EVENT_FL_FAILED;
- goto out_failed;
- }
-
- len = ((unsigned long)format + 1) -
- (unsigned long)start;
-
- /* should never happen */
- if (len > 31) {
- do_warning_event(event, "bad format!");
- event->flags |= TEP_EVENT_FL_FAILED;
- len = 31;
- }
-
- memcpy(print_format, start, len);
- print_format[len] = 0;
-
- parse_arg_add(parse, print_format,
- PRINT_FMT_ARG_STRING, *arg, len_arg, 0);
- *arg = (*arg)->next;
- ret++;
- return ret;
- default:
- snprintf(print_format, 32, ">%c<", *format);
- parse_arg_add(parse, print_format,
- PRINT_FMT_STRING, NULL, NULL, 0);
- ret++;
- return ret;
- }
- ret++;
- }
-
-out_failed:
- return ret;
-
-}
-
-static int parse_arg_string(struct tep_print_parse **parse, const char *format)
-{
- struct trace_seq s;
- int ret = 0;
-
- trace_seq_init(&s);
- for (; *format; format++) {
- if (*format == '\\') {
- format++;
- ret++;
- switch (*format) {
- case 'n':
- trace_seq_putc(&s, '\n');
- break;
- case 't':
- trace_seq_putc(&s, '\t');
- break;
- case 'r':
- trace_seq_putc(&s, '\r');
- break;
- case '\\':
- trace_seq_putc(&s, '\\');
- break;
- default:
- trace_seq_putc(&s, *format);
- break;
- }
- } else if (*format == '%') {
- if (*(format + 1) == '%') {
- trace_seq_putc(&s, '%');
- format++;
- ret++;
- } else
- break;
- } else
- trace_seq_putc(&s, *format);
-
- ret++;
- }
- trace_seq_terminate(&s);
- parse_arg_add(parse, s.buffer, PRINT_FMT_STRING, NULL, NULL, 0);
- trace_seq_destroy(&s);
-
- return ret;
-}
-
-static struct tep_print_parse *
-parse_args(struct tep_event *event, const char *format, struct tep_print_arg *arg)
-{
- struct tep_print_parse *parse_ret = NULL;
- struct tep_print_parse **parse = NULL;
- int ret;
- int len;
-
- len = strlen(format);
- while (*format) {
- if (!parse_ret)
- parse = &parse_ret;
- if (*format == '%' && *(format + 1) != '%')
- ret = parse_arg_format(parse, event, format, &arg);
- else
- ret = parse_arg_string(parse, format);
- if (*parse)
- parse = &((*parse)->next);
-
- len -= ret;
- if (len > 0)
- format += ret;
- else
- break;
- }
- return parse_ret;
-}
-
-static void print_event_cache(struct tep_print_parse *parse, struct trace_seq *s,
- void *data, int size, struct tep_event *event)
-{
- int len_arg;
-
- while (parse) {
- if (parse->len_as_arg)
- len_arg = eval_num_arg(data, size, event, parse->len_as_arg);
- switch (parse->type) {
- case PRINT_FMT_ARG_DIGIT:
- print_arg_number(s, parse->format,
- parse->len_as_arg ? len_arg : -1, data,
- size, parse->ls, event, parse->arg);
- break;
- case PRINT_FMT_ARG_POINTER:
- print_arg_pointer(s, parse->format,
- parse->len_as_arg ? len_arg : 1,
- data, size, event, parse->arg);
- break;
- case PRINT_FMT_ARG_STRING:
- print_arg_string(s, parse->format,
- parse->len_as_arg ? len_arg : -1,
- data, size, event, parse->arg);
- break;
- case PRINT_FMT_STRING:
- default:
- trace_seq_printf(s, "%s", parse->format);
- break;
- }
- parse = parse->next;
- }
-}
-
-static void pretty_print(struct trace_seq *s, void *data, int size, struct tep_event *event)
-{
- struct tep_print_parse *parse = event->print_fmt.print_cache;
- struct tep_print_arg *args = NULL;
- char *bprint_fmt = NULL;
-
- if (event->flags & TEP_EVENT_FL_FAILED) {
- trace_seq_printf(s, "[FAILED TO PARSE]");
- tep_print_fields(s, data, size, event);
- return;
- }
-
- if (event->flags & TEP_EVENT_FL_ISBPRINT) {
- bprint_fmt = get_bprint_format(data, size, event);
- args = make_bprint_args(bprint_fmt, data, size, event);
- parse = parse_args(event, bprint_fmt, args);
- }
-
- print_event_cache(parse, s, data, size, event);
-
- if (event->flags & TEP_EVENT_FL_ISBPRINT) {
- free_parse_args(parse);
- free_args(args);
- free(bprint_fmt);
- }
-}
-
-/*
- * This parses out the Latency format (interrupts disabled,
- * need rescheduling, in hard/soft interrupt, preempt count
- * and lock depth) and places it into the trace_seq.
- */
-static void data_latency_format(struct tep_handle *tep, struct trace_seq *s,
- char *format, struct tep_record *record)
-{
- static int check_lock_depth = 1;
- static int check_migrate_disable = 1;
- static int lock_depth_exists;
- static int migrate_disable_exists;
- unsigned int lat_flags;
- struct trace_seq sq;
- unsigned int pc;
- int lock_depth = 0;
- int migrate_disable = 0;
- int hardirq;
- int softirq;
- void *data = record->data;
-
- trace_seq_init(&sq);
- lat_flags = parse_common_flags(tep, data);
- pc = parse_common_pc(tep, data);
- /* lock_depth may not always exist */
- if (lock_depth_exists)
- lock_depth = parse_common_lock_depth(tep, data);
- else if (check_lock_depth) {
- lock_depth = parse_common_lock_depth(tep, data);
- if (lock_depth < 0)
- check_lock_depth = 0;
- else
- lock_depth_exists = 1;
- }
-
- /* migrate_disable may not always exist */
- if (migrate_disable_exists)
- migrate_disable = parse_common_migrate_disable(tep, data);
- else if (check_migrate_disable) {
- migrate_disable = parse_common_migrate_disable(tep, data);
- if (migrate_disable < 0)
- check_migrate_disable = 0;
- else
- migrate_disable_exists = 1;
- }
-
- hardirq = lat_flags & TRACE_FLAG_HARDIRQ;
- softirq = lat_flags & TRACE_FLAG_SOFTIRQ;
-
- trace_seq_printf(&sq, "%c%c%c",
- (lat_flags & TRACE_FLAG_IRQS_OFF) ? 'd' :
- (lat_flags & TRACE_FLAG_IRQS_NOSUPPORT) ?
- 'X' : '.',
- (lat_flags & TRACE_FLAG_NEED_RESCHED) ?
- 'N' : '.',
- (hardirq && softirq) ? 'H' :
- hardirq ? 'h' : softirq ? 's' : '.');
-
- if (pc)
- trace_seq_printf(&sq, "%x", pc);
- else
- trace_seq_printf(&sq, ".");
-
- if (migrate_disable_exists) {
- if (migrate_disable < 0)
- trace_seq_printf(&sq, ".");
- else
- trace_seq_printf(&sq, "%d", migrate_disable);
- }
-
- if (lock_depth_exists) {
- if (lock_depth < 0)
- trace_seq_printf(&sq, ".");
- else
- trace_seq_printf(&sq, "%d", lock_depth);
- }
-
- if (sq.state == TRACE_SEQ__MEM_ALLOC_FAILED) {
- s->state = TRACE_SEQ__MEM_ALLOC_FAILED;
- return;
- }
-
- trace_seq_terminate(&sq);
- trace_seq_puts(s, sq.buffer);
- trace_seq_destroy(&sq);
- trace_seq_terminate(s);
-}
-
-/**
- * tep_data_type - parse out the given event type
- * @tep: a handle to the trace event parser context
- * @rec: the record to read from
- *
- * This returns the event id from the @rec.
- */
-int tep_data_type(struct tep_handle *tep, struct tep_record *rec)
-{
- return trace_parse_common_type(tep, rec->data);
-}
-
-/**
- * tep_data_pid - parse the PID from record
- * @tep: a handle to the trace event parser context
- * @rec: the record to parse
- *
- * This returns the PID from a record.
- */
-int tep_data_pid(struct tep_handle *tep, struct tep_record *rec)
-{
- return parse_common_pid(tep, rec->data);
-}
-
-/**
- * tep_data_preempt_count - parse the preempt count from the record
- * @tep: a handle to the trace event parser context
- * @rec: the record to parse
- *
- * This returns the preempt count from a record.
- */
-int tep_data_preempt_count(struct tep_handle *tep, struct tep_record *rec)
-{
- return parse_common_pc(tep, rec->data);
-}
-
-/**
- * tep_data_flags - parse the latency flags from the record
- * @tep: a handle to the trace event parser context
- * @rec: the record to parse
- *
- * This returns the latency flags from a record.
- *
- * Use trace_flag_type enum for the flags (see event-parse.h).
- */
-int tep_data_flags(struct tep_handle *tep, struct tep_record *rec)
-{
- return parse_common_flags(tep, rec->data);
-}
-
-/**
- * tep_data_comm_from_pid - return the command line from PID
- * @tep: a handle to the trace event parser context
- * @pid: the PID of the task to search for
- *
- * This returns a pointer to the command line that has the given
- * @pid.
- */
-const char *tep_data_comm_from_pid(struct tep_handle *tep, int pid)
-{
- const char *comm;
-
- comm = find_cmdline(tep, pid);
- return comm;
-}
-
-static struct tep_cmdline *
-pid_from_cmdlist(struct tep_handle *tep, const char *comm, struct tep_cmdline *next)
-{
- struct cmdline_list *cmdlist = (struct cmdline_list *)next;
-
- if (cmdlist)
- cmdlist = cmdlist->next;
- else
- cmdlist = tep->cmdlist;
-
- while (cmdlist && strcmp(cmdlist->comm, comm) != 0)
- cmdlist = cmdlist->next;
-
- return (struct tep_cmdline *)cmdlist;
-}
-
-/**
- * tep_data_pid_from_comm - return the pid from a given comm
- * @tep: a handle to the trace event parser context
- * @comm: the cmdline to find the pid from
- * @next: the cmdline structure to find the next comm
- *
- * This returns the cmdline structure that holds a pid for a given
- * comm, or NULL if none found. As there may be more than one pid for
- * a given comm, the result of this call can be passed back into
- * a recurring call in the @next parameter, and then it will find the
- * next pid.
- * Also, it does a linear search, so it may be slow.
- */
-struct tep_cmdline *tep_data_pid_from_comm(struct tep_handle *tep, const char *comm,
- struct tep_cmdline *next)
-{
- struct tep_cmdline *cmdline;
-
- /*
- * If the cmdlines have not been converted yet, then use
- * the list.
- */
- if (!tep->cmdlines)
- return pid_from_cmdlist(tep, comm, next);
-
- if (next) {
- /*
- * The next pointer could have been still from
- * a previous call before cmdlines were created
- */
- if (next < tep->cmdlines ||
- next >= tep->cmdlines + tep->cmdline_count)
- next = NULL;
- else
- cmdline = next++;
- }
-
- if (!next)
- cmdline = tep->cmdlines;
-
- while (cmdline < tep->cmdlines + tep->cmdline_count) {
- if (strcmp(cmdline->comm, comm) == 0)
- return cmdline;
- cmdline++;
- }
- return NULL;
-}
-
-/**
- * tep_cmdline_pid - return the pid associated to a given cmdline
- * @tep: a handle to the trace event parser context
- * @cmdline: The cmdline structure to get the pid from
- *
- * Returns the pid for a give cmdline. If @cmdline is NULL, then
- * -1 is returned.
- */
-int tep_cmdline_pid(struct tep_handle *tep, struct tep_cmdline *cmdline)
-{
- struct cmdline_list *cmdlist = (struct cmdline_list *)cmdline;
-
- if (!cmdline)
- return -1;
-
- /*
- * If cmdlines have not been created yet, or cmdline is
- * not part of the array, then treat it as a cmdlist instead.
- */
- if (!tep->cmdlines ||
- cmdline < tep->cmdlines ||
- cmdline >= tep->cmdlines + tep->cmdline_count)
- return cmdlist->pid;
-
- return cmdline->pid;
-}
-
-/*
- * This parses the raw @data using the given @event information and
- * writes the print format into the trace_seq.
- */
-static void print_event_info(struct trace_seq *s, char *format, bool raw,
- struct tep_event *event, struct tep_record *record)
-{
- int print_pretty = 1;
-
- if (raw || (event->flags & TEP_EVENT_FL_PRINTRAW))
- tep_print_fields(s, record->data, record->size, event);
- else {
-
- if (event->handler && !(event->flags & TEP_EVENT_FL_NOHANDLE))
- print_pretty = event->handler(s, record, event,
- event->context);
-
- if (print_pretty)
- pretty_print(s, record->data, record->size, event);
- }
-
- trace_seq_terminate(s);
-}
-
-/**
- * tep_find_event_by_record - return the event from a given record
- * @tep: a handle to the trace event parser context
- * @record: The record to get the event from
- *
- * Returns the associated event for a given record, or NULL if non is
- * is found.
- */
-struct tep_event *
-tep_find_event_by_record(struct tep_handle *tep, struct tep_record *record)
-{
- int type;
-
- if (record->size < 0) {
- do_warning("ug! negative record size %d", record->size);
- return NULL;
- }
-
- type = trace_parse_common_type(tep, record->data);
-
- return tep_find_event(tep, type);
-}
-
-/*
- * Writes the timestamp of the record into @s. Time divisor and precision can be
- * specified as part of printf @format string. Example:
- * "%3.1000d" - divide the time by 1000 and print the first 3 digits
- * before the dot. Thus, the timestamp "123456000" will be printed as
- * "123.456"
- */
-static void print_event_time(struct tep_handle *tep, struct trace_seq *s,
- char *format, struct tep_event *event,
- struct tep_record *record)
-{
- unsigned long long time;
- char *divstr;
- int prec = 0, pr;
- int div = 0;
- int p10 = 1;
-
- if (isdigit(*(format + 1)))
- prec = atoi(format + 1);
- divstr = strchr(format, '.');
- if (divstr && isdigit(*(divstr + 1)))
- div = atoi(divstr + 1);
- time = record->ts;
- if (div) {
- time += div / 2;
- time /= div;
- }
- pr = prec;
- while (pr--)
- p10 *= 10;
-
- if (p10 > 1 && p10 < time)
- trace_seq_printf(s, "%5llu.%0*llu", time / p10, prec, time % p10);
- else
- trace_seq_printf(s, "%12llu", time);
-}
-
-struct print_event_type {
- enum {
- EVENT_TYPE_INT = 1,
- EVENT_TYPE_STRING,
- EVENT_TYPE_UNKNOWN,
- } type;
- char format[32];
-};
-
-static void print_string(struct tep_handle *tep, struct trace_seq *s,
- struct tep_record *record, struct tep_event *event,
- const char *arg, struct print_event_type *type)
-{
- const char *comm;
- int pid;
-
- if (strncmp(arg, TEP_PRINT_LATENCY, strlen(TEP_PRINT_LATENCY)) == 0) {
- data_latency_format(tep, s, type->format, record);
- } else if (strncmp(arg, TEP_PRINT_COMM, strlen(TEP_PRINT_COMM)) == 0) {
- pid = parse_common_pid(tep, record->data);
- comm = find_cmdline(tep, pid);
- trace_seq_printf(s, type->format, comm);
- } else if (strncmp(arg, TEP_PRINT_INFO_RAW, strlen(TEP_PRINT_INFO_RAW)) == 0) {
- print_event_info(s, type->format, true, event, record);
- } else if (strncmp(arg, TEP_PRINT_INFO, strlen(TEP_PRINT_INFO)) == 0) {
- print_event_info(s, type->format, false, event, record);
- } else if (strncmp(arg, TEP_PRINT_NAME, strlen(TEP_PRINT_NAME)) == 0) {
- trace_seq_printf(s, type->format, event->name);
- } else {
- trace_seq_printf(s, "[UNKNOWN TEP TYPE %s]", arg);
- }
-
-}
-
-static void print_int(struct tep_handle *tep, struct trace_seq *s,
- struct tep_record *record, struct tep_event *event,
- int arg, struct print_event_type *type)
-{
- int param;
-
- switch (arg) {
- case TEP_PRINT_CPU:
- param = record->cpu;
- break;
- case TEP_PRINT_PID:
- param = parse_common_pid(tep, record->data);
- break;
- case TEP_PRINT_TIME:
- return print_event_time(tep, s, type->format, event, record);
- default:
- return;
- }
- trace_seq_printf(s, type->format, param);
-}
-
-static int tep_print_event_param_type(char *format,
- struct print_event_type *type)
-{
- char *str = format + 1;
- int i = 1;
-
- type->type = EVENT_TYPE_UNKNOWN;
- while (*str) {
- switch (*str) {
- case 'd':
- case 'u':
- case 'i':
- case 'x':
- case 'X':
- case 'o':
- type->type = EVENT_TYPE_INT;
- break;
- case 's':
- type->type = EVENT_TYPE_STRING;
- break;
- }
- str++;
- i++;
- if (type->type != EVENT_TYPE_UNKNOWN)
- break;
- }
- memset(type->format, 0, 32);
- memcpy(type->format, format, i < 32 ? i : 31);
- return i;
-}
-
-/**
- * tep_print_event - Write various event information
- * @tep: a handle to the trace event parser context
- * @s: the trace_seq to write to
- * @record: The record to get the event from
- * @format: a printf format string. Supported event fileds:
- * TEP_PRINT_PID, "%d" - event PID
- * TEP_PRINT_CPU, "%d" - event CPU
- * TEP_PRINT_COMM, "%s" - event command string
- * TEP_PRINT_NAME, "%s" - event name
- * TEP_PRINT_LATENCY, "%s" - event latency
- * TEP_PRINT_TIME, %d - event time stamp. A divisor and precision
- * can be specified as part of this format string:
- * "%precision.divisord". Example:
- * "%3.1000d" - divide the time by 1000 and print the first
- * 3 digits before the dot. Thus, the time stamp
- * "123456000" will be printed as "123.456"
- * TEP_PRINT_INFO, "%s" - event information. If any width is specified in
- * the format string, the event information will be printed
- * in raw format.
- * Writes the specified event information into @s.
- */
-void tep_print_event(struct tep_handle *tep, struct trace_seq *s,
- struct tep_record *record, const char *fmt, ...)
-{
- struct print_event_type type;
- char *format = strdup(fmt);
- char *current = format;
- char *str = format;
- int offset;
- va_list args;
- struct tep_event *event;
-
- if (!format)
- return;
-
- event = tep_find_event_by_record(tep, record);
- va_start(args, fmt);
- while (*current) {
- current = strchr(str, '%');
- if (!current) {
- trace_seq_puts(s, str);
- break;
- }
- memset(&type, 0, sizeof(type));
- offset = tep_print_event_param_type(current, &type);
- *current = '\0';
- trace_seq_puts(s, str);
- current += offset;
- switch (type.type) {
- case EVENT_TYPE_STRING:
- print_string(tep, s, record, event,
- va_arg(args, char*), &type);
- break;
- case EVENT_TYPE_INT:
- print_int(tep, s, record, event,
- va_arg(args, int), &type);
- break;
- case EVENT_TYPE_UNKNOWN:
- default:
- trace_seq_printf(s, "[UNKNOWN TYPE]");
- break;
- }
- str = current;
-
- }
- va_end(args);
- free(format);
-}
-
-static int events_id_cmp(const void *a, const void *b)
-{
- struct tep_event * const * ea = a;
- struct tep_event * const * eb = b;
-
- if ((*ea)->id < (*eb)->id)
- return -1;
-
- if ((*ea)->id > (*eb)->id)
- return 1;
-
- return 0;
-}
-
-static int events_name_cmp(const void *a, const void *b)
-{
- struct tep_event * const * ea = a;
- struct tep_event * const * eb = b;
- int res;
-
- res = strcmp((*ea)->name, (*eb)->name);
- if (res)
- return res;
-
- res = strcmp((*ea)->system, (*eb)->system);
- if (res)
- return res;
-
- return events_id_cmp(a, b);
-}
-
-static int events_system_cmp(const void *a, const void *b)
-{
- struct tep_event * const * ea = a;
- struct tep_event * const * eb = b;
- int res;
-
- res = strcmp((*ea)->system, (*eb)->system);
- if (res)
- return res;
-
- res = strcmp((*ea)->name, (*eb)->name);
- if (res)
- return res;
-
- return events_id_cmp(a, b);
-}
-
-static struct tep_event **list_events_copy(struct tep_handle *tep)
-{
- struct tep_event **events;
-
- if (!tep)
- return NULL;
-
- events = malloc(sizeof(*events) * (tep->nr_events + 1));
- if (!events)
- return NULL;
-
- memcpy(events, tep->events, sizeof(*events) * tep->nr_events);
- events[tep->nr_events] = NULL;
- return events;
-}
-
-static void list_events_sort(struct tep_event **events, int nr_events,
- enum tep_event_sort_type sort_type)
-{
- int (*sort)(const void *a, const void *b);
-
- switch (sort_type) {
- case TEP_EVENT_SORT_ID:
- sort = events_id_cmp;
- break;
- case TEP_EVENT_SORT_NAME:
- sort = events_name_cmp;
- break;
- case TEP_EVENT_SORT_SYSTEM:
- sort = events_system_cmp;
- break;
- default:
- sort = NULL;
- }
-
- if (sort)
- qsort(events, nr_events, sizeof(*events), sort);
-}
-
-/**
- * tep_list_events - Get events, sorted by given criteria.
- * @tep: a handle to the tep context
- * @sort_type: desired sort order of the events in the array
- *
- * Returns an array of pointers to all events, sorted by the given
- * @sort_type criteria. The last element of the array is NULL. The returned
- * memory must not be freed, it is managed by the library.
- * The function is not thread safe.
- */
-struct tep_event **tep_list_events(struct tep_handle *tep,
- enum tep_event_sort_type sort_type)
-{
- struct tep_event **events;
-
- if (!tep)
- return NULL;
-
- events = tep->sort_events;
- if (events && tep->last_type == sort_type)
- return events;
-
- if (!events) {
- events = list_events_copy(tep);
- if (!events)
- return NULL;
-
- tep->sort_events = events;
-
- /* the internal events are sorted by id */
- if (sort_type == TEP_EVENT_SORT_ID) {
- tep->last_type = sort_type;
- return events;
- }
- }
-
- list_events_sort(events, tep->nr_events, sort_type);
- tep->last_type = sort_type;
-
- return events;
-}
-
-
-/**
- * tep_list_events_copy - Thread safe version of tep_list_events()
- * @tep: a handle to the tep context
- * @sort_type: desired sort order of the events in the array
- *
- * Returns an array of pointers to all events, sorted by the given
- * @sort_type criteria. The last element of the array is NULL. The returned
- * array is newly allocated inside the function and must be freed by the caller
- */
-struct tep_event **tep_list_events_copy(struct tep_handle *tep,
- enum tep_event_sort_type sort_type)
-{
- struct tep_event **events;
-
- if (!tep)
- return NULL;
-
- events = list_events_copy(tep);
- if (!events)
- return NULL;
-
- /* the internal events are sorted by id */
- if (sort_type == TEP_EVENT_SORT_ID)
- return events;
-
- list_events_sort(events, tep->nr_events, sort_type);
-
- return events;
-}
-
-static struct tep_format_field **
-get_event_fields(const char *type, const char *name,
- int count, struct tep_format_field *list)
-{
- struct tep_format_field **fields;
- struct tep_format_field *field;
- int i = 0;
-
- fields = malloc(sizeof(*fields) * (count + 1));
- if (!fields)
- return NULL;
-
- for (field = list; field; field = field->next) {
- fields[i++] = field;
- if (i == count + 1) {
- do_warning("event %s has more %s fields than specified",
- name, type);
- i--;
- break;
- }
- }
-
- if (i != count)
- do_warning("event %s has less %s fields than specified",
- name, type);
-
- fields[i] = NULL;
-
- return fields;
-}
-
-/**
- * tep_event_common_fields - return a list of common fields for an event
- * @event: the event to return the common fields of.
- *
- * Returns an allocated array of fields. The last item in the array is NULL.
- * The array must be freed with free().
- */
-struct tep_format_field **tep_event_common_fields(struct tep_event *event)
-{
- return get_event_fields("common", event->name,
- event->format.nr_common,
- event->format.common_fields);
-}
-
-/**
- * tep_event_fields - return a list of event specific fields for an event
- * @event: the event to return the fields of.
- *
- * Returns an allocated array of fields. The last item in the array is NULL.
- * The array must be freed with free().
- */
-struct tep_format_field **tep_event_fields(struct tep_event *event)
-{
- return get_event_fields("event", event->name,
- event->format.nr_fields,
- event->format.fields);
-}
-
-static void print_fields(struct trace_seq *s, struct tep_print_flag_sym *field)
-{
- trace_seq_printf(s, "{ %s, %s }", field->value, field->str);
- if (field->next) {
- trace_seq_puts(s, ", ");
- print_fields(s, field->next);
- }
-}
-
-/* for debugging */
-static void print_args(struct tep_print_arg *args)
-{
- int print_paren = 1;
- struct trace_seq s;
-
- switch (args->type) {
- case TEP_PRINT_NULL:
- printf("null");
- break;
- case TEP_PRINT_ATOM:
- printf("%s", args->atom.atom);
- break;
- case TEP_PRINT_FIELD:
- printf("REC->%s", args->field.name);
- break;
- case TEP_PRINT_FLAGS:
- printf("__print_flags(");
- print_args(args->flags.field);
- printf(", %s, ", args->flags.delim);
- trace_seq_init(&s);
- print_fields(&s, args->flags.flags);
- trace_seq_do_printf(&s);
- trace_seq_destroy(&s);
- printf(")");
- break;
- case TEP_PRINT_SYMBOL:
- printf("__print_symbolic(");
- print_args(args->symbol.field);
- printf(", ");
- trace_seq_init(&s);
- print_fields(&s, args->symbol.symbols);
- trace_seq_do_printf(&s);
- trace_seq_destroy(&s);
- printf(")");
- break;
- case TEP_PRINT_HEX:
- printf("__print_hex(");
- print_args(args->hex.field);
- printf(", ");
- print_args(args->hex.size);
- printf(")");
- break;
- case TEP_PRINT_HEX_STR:
- printf("__print_hex_str(");
- print_args(args->hex.field);
- printf(", ");
- print_args(args->hex.size);
- printf(")");
- break;
- case TEP_PRINT_INT_ARRAY:
- printf("__print_array(");
- print_args(args->int_array.field);
- printf(", ");
- print_args(args->int_array.count);
- printf(", ");
- print_args(args->int_array.el_size);
- printf(")");
- break;
- case TEP_PRINT_STRING:
- case TEP_PRINT_BSTRING:
- printf("__get_str(%s)", args->string.string);
- break;
- case TEP_PRINT_BITMASK:
- printf("__get_bitmask(%s)", args->bitmask.bitmask);
- break;
- case TEP_PRINT_TYPE:
- printf("(%s)", args->typecast.type);
- print_args(args->typecast.item);
- break;
- case TEP_PRINT_OP:
- if (strcmp(args->op.op, ":") == 0)
- print_paren = 0;
- if (print_paren)
- printf("(");
- print_args(args->op.left);
- printf(" %s ", args->op.op);
- print_args(args->op.right);
- if (print_paren)
- printf(")");
- break;
- default:
- /* we should warn... */
- return;
- }
- if (args->next) {
- printf("\n");
- print_args(args->next);
- }
-}
-
-static void parse_header_field(const char *field,
- int *offset, int *size, int mandatory)
-{
- unsigned long long save_input_buf_ptr;
- unsigned long long save_input_buf_siz;
- char *token;
- int type;
-
- save_input_buf_ptr = input_buf_ptr;
- save_input_buf_siz = input_buf_siz;
-
- if (read_expected(TEP_EVENT_ITEM, "field") < 0)
- return;
- if (read_expected(TEP_EVENT_OP, ":") < 0)
- return;
-
- /* type */
- if (read_expect_type(TEP_EVENT_ITEM, &token) < 0)
- goto fail;
- free_token(token);
-
- /*
- * If this is not a mandatory field, then test it first.
- */
- if (mandatory) {
- if (read_expected(TEP_EVENT_ITEM, field) < 0)
- return;
- } else {
- if (read_expect_type(TEP_EVENT_ITEM, &token) < 0)
- goto fail;
- if (strcmp(token, field) != 0)
- goto discard;
- free_token(token);
- }
-
- if (read_expected(TEP_EVENT_OP, ";") < 0)
- return;
- if (read_expected(TEP_EVENT_ITEM, "offset") < 0)
- return;
- if (read_expected(TEP_EVENT_OP, ":") < 0)
- return;
- if (read_expect_type(TEP_EVENT_ITEM, &token) < 0)
- goto fail;
- *offset = atoi(token);
- free_token(token);
- if (read_expected(TEP_EVENT_OP, ";") < 0)
- return;
- if (read_expected(TEP_EVENT_ITEM, "size") < 0)
- return;
- if (read_expected(TEP_EVENT_OP, ":") < 0)
- return;
- if (read_expect_type(TEP_EVENT_ITEM, &token) < 0)
- goto fail;
- *size = atoi(token);
- free_token(token);
- if (read_expected(TEP_EVENT_OP, ";") < 0)
- return;
- type = read_token(&token);
- if (type != TEP_EVENT_NEWLINE) {
- /* newer versions of the kernel have a "signed" type */
- if (type != TEP_EVENT_ITEM)
- goto fail;
-
- if (strcmp(token, "signed") != 0)
- goto fail;
-
- free_token(token);
-
- if (read_expected(TEP_EVENT_OP, ":") < 0)
- return;
-
- if (read_expect_type(TEP_EVENT_ITEM, &token))
- goto fail;
-
- free_token(token);
- if (read_expected(TEP_EVENT_OP, ";") < 0)
- return;
-
- if (read_expect_type(TEP_EVENT_NEWLINE, &token))
- goto fail;
- }
- fail:
- free_token(token);
- return;
-
- discard:
- input_buf_ptr = save_input_buf_ptr;
- input_buf_siz = save_input_buf_siz;
- *offset = 0;
- *size = 0;
- free_token(token);
-}
-
-/**
- * tep_parse_header_page - parse the data stored in the header page
- * @tep: a handle to the trace event parser context
- * @buf: the buffer storing the header page format string
- * @size: the size of @buf
- * @long_size: the long size to use if there is no header
- *
- * This parses the header page format for information on the
- * ring buffer used. The @buf should be copied from
- *
- * /sys/kernel/debug/tracing/events/header_page
- */
-int tep_parse_header_page(struct tep_handle *tep, char *buf, unsigned long size,
- int long_size)
-{
- int ignore;
-
- if (!size) {
- /*
- * Old kernels did not have header page info.
- * Sorry but we just use what we find here in user space.
- */
- tep->header_page_ts_size = sizeof(long long);
- tep->header_page_size_size = long_size;
- tep->header_page_data_offset = sizeof(long long) + long_size;
- tep->old_format = 1;
- return -1;
- }
- init_input_buf(buf, size);
-
- parse_header_field("timestamp", &tep->header_page_ts_offset,
- &tep->header_page_ts_size, 1);
- parse_header_field("commit", &tep->header_page_size_offset,
- &tep->header_page_size_size, 1);
- parse_header_field("overwrite", &tep->header_page_overwrite,
- &ignore, 0);
- parse_header_field("data", &tep->header_page_data_offset,
- &tep->header_page_data_size, 1);
-
- return 0;
-}
-
-static int event_matches(struct tep_event *event,
- int id, const char *sys_name,
- const char *event_name)
-{
- if (id >= 0 && id != event->id)
- return 0;
-
- if (event_name && (strcmp(event_name, event->name) != 0))
- return 0;
-
- if (sys_name && (strcmp(sys_name, event->system) != 0))
- return 0;
-
- return 1;
-}
-
-static void free_handler(struct event_handler *handle)
-{
- free((void *)handle->sys_name);
- free((void *)handle->event_name);
- free(handle);
-}
-
-static int find_event_handle(struct tep_handle *tep, struct tep_event *event)
-{
- struct event_handler *handle, **next;
-
- for (next = &tep->handlers; *next;
- next = &(*next)->next) {
- handle = *next;
- if (event_matches(event, handle->id,
- handle->sys_name,
- handle->event_name))
- break;
- }
-
- if (!(*next))
- return 0;
-
- pr_stat("overriding event (%d) %s:%s with new print handler",
- event->id, event->system, event->name);
-
- event->handler = handle->func;
- event->context = handle->context;
-
- *next = handle->next;
- free_handler(handle);
-
- return 1;
-}
-
-/**
- * parse_format - parse the event format
- * @buf: the buffer storing the event format string
- * @size: the size of @buf
- * @sys: the system the event belongs to
- *
- * This parses the event format and creates an event structure
- * to quickly parse raw data for a given event.
- *
- * These files currently come from:
- *
- * /sys/kernel/debug/tracing/events/.../.../format
- */
-static enum tep_errno parse_format(struct tep_event **eventp,
- struct tep_handle *tep, const char *buf,
- unsigned long size, const char *sys)
-{
- struct tep_event *event;
- int ret;
-
- init_input_buf(buf, size);
-
- *eventp = event = alloc_event();
- if (!event)
- return TEP_ERRNO__MEM_ALLOC_FAILED;
-
- event->name = event_read_name();
- if (!event->name) {
- /* Bad event? */
- ret = TEP_ERRNO__MEM_ALLOC_FAILED;
- goto event_alloc_failed;
- }
-
- if (strcmp(sys, "ftrace") == 0) {
- event->flags |= TEP_EVENT_FL_ISFTRACE;
-
- if (strcmp(event->name, "bprint") == 0)
- event->flags |= TEP_EVENT_FL_ISBPRINT;
- }
-
- event->id = event_read_id();
- if (event->id < 0) {
- ret = TEP_ERRNO__READ_ID_FAILED;
- /*
- * This isn't an allocation error actually.
- * But as the ID is critical, just bail out.
- */
- goto event_alloc_failed;
- }
-
- event->system = strdup(sys);
- if (!event->system) {
- ret = TEP_ERRNO__MEM_ALLOC_FAILED;
- goto event_alloc_failed;
- }
-
- /* Add tep to event so that it can be referenced */
- event->tep = tep;
-
- ret = event_read_format(event);
- if (ret < 0) {
- ret = TEP_ERRNO__READ_FORMAT_FAILED;
- goto event_parse_failed;
- }
-
- /*
- * If the event has an override, don't print warnings if the event
- * print format fails to parse.
- */
- if (tep && find_event_handle(tep, event))
- show_warning = 0;
-
- ret = event_read_print(event);
- show_warning = 1;
-
- if (ret < 0) {
- ret = TEP_ERRNO__READ_PRINT_FAILED;
- goto event_parse_failed;
- }
-
- if (!ret && (event->flags & TEP_EVENT_FL_ISFTRACE)) {
- struct tep_format_field *field;
- struct tep_print_arg *arg, **list;
-
- /* old ftrace had no args */
- list = &event->print_fmt.args;
- for (field = event->format.fields; field; field = field->next) {
- arg = alloc_arg();
- if (!arg) {
- event->flags |= TEP_EVENT_FL_FAILED;
- return TEP_ERRNO__OLD_FTRACE_ARG_FAILED;
- }
- arg->type = TEP_PRINT_FIELD;
- arg->field.name = strdup(field->name);
- if (!arg->field.name) {
- event->flags |= TEP_EVENT_FL_FAILED;
- free_arg(arg);
- return TEP_ERRNO__OLD_FTRACE_ARG_FAILED;
- }
- arg->field.field = field;
- *list = arg;
- list = &arg->next;
- }
- }
-
- if (!(event->flags & TEP_EVENT_FL_ISBPRINT))
- event->print_fmt.print_cache = parse_args(event,
- event->print_fmt.format,
- event->print_fmt.args);
-
- return 0;
-
- event_parse_failed:
- event->flags |= TEP_EVENT_FL_FAILED;
- return ret;
-
- event_alloc_failed:
- free(event->system);
- free(event->name);
- free(event);
- *eventp = NULL;
- return ret;
-}
-
-static enum tep_errno
-__parse_event(struct tep_handle *tep,
- struct tep_event **eventp,
- const char *buf, unsigned long size,
- const char *sys)
-{
- int ret = parse_format(eventp, tep, buf, size, sys);
- struct tep_event *event = *eventp;
-
- if (event == NULL)
- return ret;
-
- if (tep && add_event(tep, event)) {
- ret = TEP_ERRNO__MEM_ALLOC_FAILED;
- goto event_add_failed;
- }
-
-#define PRINT_ARGS 0
- if (PRINT_ARGS && event->print_fmt.args)
- print_args(event->print_fmt.args);
-
- return 0;
-
-event_add_failed:
- free_tep_event(event);
- return ret;
-}
-
-/**
- * tep_parse_format - parse the event format
- * @tep: a handle to the trace event parser context
- * @eventp: returned format
- * @buf: the buffer storing the event format string
- * @size: the size of @buf
- * @sys: the system the event belongs to
- *
- * This parses the event format and creates an event structure
- * to quickly parse raw data for a given event.
- *
- * These files currently come from:
- *
- * /sys/kernel/debug/tracing/events/.../.../format
- */
-enum tep_errno tep_parse_format(struct tep_handle *tep,
- struct tep_event **eventp,
- const char *buf,
- unsigned long size, const char *sys)
-{
- return __parse_event(tep, eventp, buf, size, sys);
-}
-
-/**
- * tep_parse_event - parse the event format
- * @tep: a handle to the trace event parser context
- * @buf: the buffer storing the event format string
- * @size: the size of @buf
- * @sys: the system the event belongs to
- *
- * This parses the event format and creates an event structure
- * to quickly parse raw data for a given event.
- *
- * These files currently come from:
- *
- * /sys/kernel/debug/tracing/events/.../.../format
- */
-enum tep_errno tep_parse_event(struct tep_handle *tep, const char *buf,
- unsigned long size, const char *sys)
-{
- struct tep_event *event = NULL;
- return __parse_event(tep, &event, buf, size, sys);
-}
-
-int get_field_val(struct trace_seq *s, struct tep_format_field *field,
- const char *name, struct tep_record *record,
- unsigned long long *val, int err)
-{
- if (!field) {
- if (err)
- trace_seq_printf(s, "<CANT FIND FIELD %s>", name);
- return -1;
- }
-
- if (tep_read_number_field(field, record->data, val)) {
- if (err)
- trace_seq_printf(s, " %s=INVALID", name);
- return -1;
- }
-
- return 0;
-}
-
-/**
- * tep_get_field_raw - return the raw pointer into the data field
- * @s: The seq to print to on error
- * @event: the event that the field is for
- * @name: The name of the field
- * @record: The record with the field name.
- * @len: place to store the field length.
- * @err: print default error if failed.
- *
- * Returns a pointer into record->data of the field and places
- * the length of the field in @len.
- *
- * On failure, it returns NULL.
- */
-void *tep_get_field_raw(struct trace_seq *s, struct tep_event *event,
- const char *name, struct tep_record *record,
- int *len, int err)
-{
- struct tep_format_field *field;
- void *data = record->data;
- unsigned offset;
- int dummy;
-
- if (!event)
- return NULL;
-
- field = tep_find_field(event, name);
-
- if (!field) {
- if (err)
- trace_seq_printf(s, "<CANT FIND FIELD %s>", name);
- return NULL;
- }
-
- /* Allow @len to be NULL */
- if (!len)
- len = &dummy;
-
- offset = field->offset;
- if (field->flags & TEP_FIELD_IS_DYNAMIC) {
- offset = tep_read_number(event->tep,
- data + offset, field->size);
- *len = offset >> 16;
- offset &= 0xffff;
- if (field->flags & TEP_FIELD_IS_RELATIVE)
- offset += field->offset + field->size;
- } else
- *len = field->size;
-
- return data + offset;
-}
-
-/**
- * tep_get_field_val - find a field and return its value
- * @s: The seq to print to on error
- * @event: the event that the field is for
- * @name: The name of the field
- * @record: The record with the field name.
- * @val: place to store the value of the field.
- * @err: print default error if failed.
- *
- * Returns 0 on success -1 on field not found.
- */
-int tep_get_field_val(struct trace_seq *s, struct tep_event *event,
- const char *name, struct tep_record *record,
- unsigned long long *val, int err)
-{
- struct tep_format_field *field;
-
- if (!event)
- return -1;
-
- field = tep_find_field(event, name);
-
- return get_field_val(s, field, name, record, val, err);
-}
-
-/**
- * tep_get_common_field_val - find a common field and return its value
- * @s: The seq to print to on error
- * @event: the event that the field is for
- * @name: The name of the field
- * @record: The record with the field name.
- * @val: place to store the value of the field.
- * @err: print default error if failed.
- *
- * Returns 0 on success -1 on field not found.
- */
-int tep_get_common_field_val(struct trace_seq *s, struct tep_event *event,
- const char *name, struct tep_record *record,
- unsigned long long *val, int err)
-{
- struct tep_format_field *field;
-
- if (!event)
- return -1;
-
- field = tep_find_common_field(event, name);
-
- return get_field_val(s, field, name, record, val, err);
-}
-
-/**
- * tep_get_any_field_val - find a any field and return its value
- * @s: The seq to print to on error
- * @event: the event that the field is for
- * @name: The name of the field
- * @record: The record with the field name.
- * @val: place to store the value of the field.
- * @err: print default error if failed.
- *
- * Returns 0 on success -1 on field not found.
- */
-int tep_get_any_field_val(struct trace_seq *s, struct tep_event *event,
- const char *name, struct tep_record *record,
- unsigned long long *val, int err)
-{
- struct tep_format_field *field;
-
- if (!event)
- return -1;
-
- field = tep_find_any_field(event, name);
-
- return get_field_val(s, field, name, record, val, err);
-}
-
-/**
- * tep_print_num_field - print a field and a format
- * @s: The seq to print to
- * @fmt: The printf format to print the field with.
- * @event: the event that the field is for
- * @name: The name of the field
- * @record: The record with the field name.
- * @err: print default error if failed.
- *
- * Returns positive value on success, negative in case of an error,
- * or 0 if buffer is full.
- */
-int tep_print_num_field(struct trace_seq *s, const char *fmt,
- struct tep_event *event, const char *name,
- struct tep_record *record, int err)
-{
- struct tep_format_field *field = tep_find_field(event, name);
- unsigned long long val;
-
- if (!field)
- goto failed;
-
- if (tep_read_number_field(field, record->data, &val))
- goto failed;
-
- return trace_seq_printf(s, fmt, val);
-
- failed:
- if (err)
- trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name);
- return -1;
-}
-
-/**
- * tep_print_func_field - print a field and a format for function pointers
- * @s: The seq to print to
- * @fmt: The printf format to print the field with.
- * @event: the event that the field is for
- * @name: The name of the field
- * @record: The record with the field name.
- * @err: print default error if failed.
- *
- * Returns positive value on success, negative in case of an error,
- * or 0 if buffer is full.
- */
-int tep_print_func_field(struct trace_seq *s, const char *fmt,
- struct tep_event *event, const char *name,
- struct tep_record *record, int err)
-{
- struct tep_format_field *field = tep_find_field(event, name);
- struct tep_handle *tep = event->tep;
- unsigned long long val;
- struct func_map *func;
- char tmp[128];
-
- if (!field)
- goto failed;
-
- if (tep_read_number_field(field, record->data, &val))
- goto failed;
-
- func = find_func(tep, val);
-
- if (func)
- snprintf(tmp, 128, "%s/0x%llx", func->func, func->addr - val);
- else
- sprintf(tmp, "0x%08llx", val);
-
- return trace_seq_printf(s, fmt, tmp);
-
- failed:
- if (err)
- trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name);
- return -1;
-}
-
-static void free_func_handle(struct tep_function_handler *func)
-{
- struct func_params *params;
-
- free(func->name);
-
- while (func->params) {
- params = func->params;
- func->params = params->next;
- free(params);
- }
-
- free(func);
-}
-
-/**
- * tep_register_print_function - register a helper function
- * @tep: a handle to the trace event parser context
- * @func: the function to process the helper function
- * @ret_type: the return type of the helper function
- * @name: the name of the helper function
- * @parameters: A list of enum tep_func_arg_type
- *
- * Some events may have helper functions in the print format arguments.
- * This allows a plugin to dynamically create a way to process one
- * of these functions.
- *
- * The @parameters is a variable list of tep_func_arg_type enums that
- * must end with TEP_FUNC_ARG_VOID.
- */
-int tep_register_print_function(struct tep_handle *tep,
- tep_func_handler func,
- enum tep_func_arg_type ret_type,
- char *name, ...)
-{
- struct tep_function_handler *func_handle;
- struct func_params **next_param;
- struct func_params *param;
- enum tep_func_arg_type type;
- va_list ap;
- int ret;
-
- func_handle = find_func_handler(tep, name);
- if (func_handle) {
- /*
- * This is most like caused by the users own
- * plugins updating the function. This overrides the
- * system defaults.
- */
- pr_stat("override of function helper '%s'", name);
- remove_func_handler(tep, name);
- }
-
- func_handle = calloc(1, sizeof(*func_handle));
- if (!func_handle) {
- do_warning("Failed to allocate function handler");
- return TEP_ERRNO__MEM_ALLOC_FAILED;
- }
-
- func_handle->ret_type = ret_type;
- func_handle->name = strdup(name);
- func_handle->func = func;
- if (!func_handle->name) {
- do_warning("Failed to allocate function name");
- free(func_handle);
- return TEP_ERRNO__MEM_ALLOC_FAILED;
- }
-
- next_param = &(func_handle->params);
- va_start(ap, name);
- for (;;) {
- type = va_arg(ap, enum tep_func_arg_type);
- if (type == TEP_FUNC_ARG_VOID)
- break;
-
- if (type >= TEP_FUNC_ARG_MAX_TYPES) {
- do_warning("Invalid argument type %d", type);
- ret = TEP_ERRNO__INVALID_ARG_TYPE;
- goto out_free;
- }
-
- param = malloc(sizeof(*param));
- if (!param) {
- do_warning("Failed to allocate function param");
- ret = TEP_ERRNO__MEM_ALLOC_FAILED;
- goto out_free;
- }
- param->type = type;
- param->next = NULL;
-
- *next_param = param;
- next_param = &(param->next);
-
- func_handle->nr_args++;
- }
- va_end(ap);
-
- func_handle->next = tep->func_handlers;
- tep->func_handlers = func_handle;
-
- return 0;
- out_free:
- va_end(ap);
- free_func_handle(func_handle);
- return ret;
-}
-
-/**
- * tep_unregister_print_function - unregister a helper function
- * @tep: a handle to the trace event parser context
- * @func: the function to process the helper function
- * @name: the name of the helper function
- *
- * This function removes existing print handler for function @name.
- *
- * Returns 0 if the handler was removed successully, -1 otherwise.
- */
-int tep_unregister_print_function(struct tep_handle *tep,
- tep_func_handler func, char *name)
-{
- struct tep_function_handler *func_handle;
-
- func_handle = find_func_handler(tep, name);
- if (func_handle && func_handle->func == func) {
- remove_func_handler(tep, name);
- return 0;
- }
- return -1;
-}
-
-static struct tep_event *search_event(struct tep_handle *tep, int id,
- const char *sys_name,
- const char *event_name)
-{
- struct tep_event *event;
-
- if (id >= 0) {
- /* search by id */
- event = tep_find_event(tep, id);
- if (!event)
- return NULL;
- if (event_name && (strcmp(event_name, event->name) != 0))
- return NULL;
- if (sys_name && (strcmp(sys_name, event->system) != 0))
- return NULL;
- } else {
- event = tep_find_event_by_name(tep, sys_name, event_name);
- if (!event)
- return NULL;
- }
- return event;
-}
-
-/**
- * tep_register_event_handler - register a way to parse an event
- * @tep: a handle to the trace event parser context
- * @id: the id of the event to register
- * @sys_name: the system name the event belongs to
- * @event_name: the name of the event
- * @func: the function to call to parse the event information
- * @context: the data to be passed to @func
- *
- * This function allows a developer to override the parsing of
- * a given event. If for some reason the default print format
- * is not sufficient, this function will register a function
- * for an event to be used to parse the data instead.
- *
- * If @id is >= 0, then it is used to find the event.
- * else @sys_name and @event_name are used.
- *
- * Returns:
- * TEP_REGISTER_SUCCESS_OVERWRITE if an existing handler is overwritten
- * TEP_REGISTER_SUCCESS if a new handler is registered successfully
- * negative TEP_ERRNO_... in case of an error
- *
- */
-int tep_register_event_handler(struct tep_handle *tep, int id,
- const char *sys_name, const char *event_name,
- tep_event_handler_func func, void *context)
-{
- struct tep_event *event;
- struct event_handler *handle;
-
- event = search_event(tep, id, sys_name, event_name);
- if (event == NULL)
- goto not_found;
-
- pr_stat("overriding event (%d) %s:%s with new print handler",
- event->id, event->system, event->name);
-
- event->handler = func;
- event->context = context;
- return TEP_REGISTER_SUCCESS_OVERWRITE;
-
- not_found:
- /* Save for later use. */
- handle = calloc(1, sizeof(*handle));
- if (!handle) {
- do_warning("Failed to allocate event handler");
- return TEP_ERRNO__MEM_ALLOC_FAILED;
- }
-
- handle->id = id;
- if (event_name)
- handle->event_name = strdup(event_name);
- if (sys_name)
- handle->sys_name = strdup(sys_name);
-
- if ((event_name && !handle->event_name) ||
- (sys_name && !handle->sys_name)) {
- do_warning("Failed to allocate event/sys name");
- free((void *)handle->event_name);
- free((void *)handle->sys_name);
- free(handle);
- return TEP_ERRNO__MEM_ALLOC_FAILED;
- }
-
- handle->func = func;
- handle->next = tep->handlers;
- tep->handlers = handle;
- handle->context = context;
-
- return TEP_REGISTER_SUCCESS;
-}
-
-static int handle_matches(struct event_handler *handler, int id,
- const char *sys_name, const char *event_name,
- tep_event_handler_func func, void *context)
-{
- if (id >= 0 && id != handler->id)
- return 0;
-
- if (event_name && (strcmp(event_name, handler->event_name) != 0))
- return 0;
-
- if (sys_name && (strcmp(sys_name, handler->sys_name) != 0))
- return 0;
-
- if (func != handler->func || context != handler->context)
- return 0;
-
- return 1;
-}
-
-/**
- * tep_unregister_event_handler - unregister an existing event handler
- * @tep: a handle to the trace event parser context
- * @id: the id of the event to unregister
- * @sys_name: the system name the handler belongs to
- * @event_name: the name of the event handler
- * @func: the function to call to parse the event information
- * @context: the data to be passed to @func
- *
- * This function removes existing event handler (parser).
- *
- * If @id is >= 0, then it is used to find the event.
- * else @sys_name and @event_name are used.
- *
- * Returns 0 if handler was removed successfully, -1 if event was not found.
- */
-int tep_unregister_event_handler(struct tep_handle *tep, int id,
- const char *sys_name, const char *event_name,
- tep_event_handler_func func, void *context)
-{
- struct tep_event *event;
- struct event_handler *handle;
- struct event_handler **next;
-
- event = search_event(tep, id, sys_name, event_name);
- if (event == NULL)
- goto not_found;
-
- if (event->handler == func && event->context == context) {
- pr_stat("removing override handler for event (%d) %s:%s. Going back to default handler.",
- event->id, event->system, event->name);
-
- event->handler = NULL;
- event->context = NULL;
- return 0;
- }
-
-not_found:
- for (next = &tep->handlers; *next; next = &(*next)->next) {
- handle = *next;
- if (handle_matches(handle, id, sys_name, event_name,
- func, context))
- break;
- }
-
- if (!(*next))
- return -1;
-
- *next = handle->next;
- free_handler(handle);
-
- return 0;
-}
-
-/**
- * tep_alloc - create a tep handle
- */
-struct tep_handle *tep_alloc(void)
-{
- struct tep_handle *tep = calloc(1, sizeof(*tep));
-
- if (tep) {
- tep->ref_count = 1;
- tep->host_bigendian = tep_is_bigendian();
- }
-
- return tep;
-}
-
-void tep_ref(struct tep_handle *tep)
-{
- tep->ref_count++;
-}
-
-int tep_get_ref(struct tep_handle *tep)
-{
- if (tep)
- return tep->ref_count;
- return 0;
-}
-
-__hidden void free_tep_format_field(struct tep_format_field *field)
-{
- free(field->type);
- if (field->alias != field->name)
- free(field->alias);
- free(field->name);
- free(field);
-}
-
-static void free_format_fields(struct tep_format_field *field)
-{
- struct tep_format_field *next;
-
- while (field) {
- next = field->next;
- free_tep_format_field(field);
- field = next;
- }
-}
-
-static void free_formats(struct tep_format *format)
-{
- free_format_fields(format->common_fields);
- free_format_fields(format->fields);
-}
-
-__hidden void free_tep_event(struct tep_event *event)
-{
- free(event->name);
- free(event->system);
-
- free_formats(&event->format);
-
- free(event->print_fmt.format);
- free_args(event->print_fmt.args);
- free_parse_args(event->print_fmt.print_cache);
- free(event);
-}
-
-/**
- * tep_free - free a tep handle
- * @tep: the tep handle to free
- */
-void tep_free(struct tep_handle *tep)
-{
- struct cmdline_list *cmdlist, *cmdnext;
- struct func_list *funclist, *funcnext;
- struct printk_list *printklist, *printknext;
- struct tep_function_handler *func_handler;
- struct event_handler *handle;
- int i;
-
- if (!tep)
- return;
-
- cmdlist = tep->cmdlist;
- funclist = tep->funclist;
- printklist = tep->printklist;
-
- tep->ref_count--;
- if (tep->ref_count)
- return;
-
- if (tep->cmdlines) {
- for (i = 0; i < tep->cmdline_count; i++)
- free(tep->cmdlines[i].comm);
- free(tep->cmdlines);
- }
-
- while (cmdlist) {
- cmdnext = cmdlist->next;
- free(cmdlist->comm);
- free(cmdlist);
- cmdlist = cmdnext;
- }
-
- if (tep->func_map) {
- for (i = 0; i < (int)tep->func_count; i++) {
- free(tep->func_map[i].func);
- free(tep->func_map[i].mod);
- }
- free(tep->func_map);
- }
-
- while (funclist) {
- funcnext = funclist->next;
- free(funclist->func);
- free(funclist->mod);
- free(funclist);
- funclist = funcnext;
- }
-
- while (tep->func_handlers) {
- func_handler = tep->func_handlers;
- tep->func_handlers = func_handler->next;
- free_func_handle(func_handler);
- }
-
- if (tep->printk_map) {
- for (i = 0; i < (int)tep->printk_count; i++)
- free(tep->printk_map[i].printk);
- free(tep->printk_map);
- }
-
- while (printklist) {
- printknext = printklist->next;
- free(printklist->printk);
- free(printklist);
- printklist = printknext;
- }
-
- for (i = 0; i < tep->nr_events; i++)
- free_tep_event(tep->events[i]);
-
- while (tep->handlers) {
- handle = tep->handlers;
- tep->handlers = handle->next;
- free_handler(handle);
- }
-
- free(tep->events);
- free(tep->sort_events);
- free(tep->func_resolver);
- free_tep_plugin_paths(tep);
-
- free(tep);
-}
-
-void tep_unref(struct tep_handle *tep)
-{
- tep_free(tep);
-}
+++ /dev/null
-/* SPDX-License-Identifier: LGPL-2.1 */
-/*
- * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
- *
- */
-#ifndef _PARSE_EVENTS_H
-#define _PARSE_EVENTS_H
-
-#include <stdbool.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <regex.h>
-#include <string.h>
-
-#include "trace-seq.h"
-
-#ifndef __maybe_unused
-#define __maybe_unused __attribute__((unused))
-#endif
-
-#ifndef DEBUG_RECORD
-#define DEBUG_RECORD 0
-#endif
-
-struct tep_record {
- unsigned long long ts;
- unsigned long long offset;
- long long missed_events; /* buffer dropped events before */
- int record_size; /* size of binary record */
- int size; /* size of data */
- void *data;
- int cpu;
- int ref_count;
- int locked; /* Do not free, even if ref_count is zero */
- void *priv;
-#if DEBUG_RECORD
- struct tep_record *prev;
- struct tep_record *next;
- long alloc_addr;
-#endif
-};
-
-/* ----------------------- tep ----------------------- */
-
-struct tep_handle;
-struct tep_event;
-
-typedef int (*tep_event_handler_func)(struct trace_seq *s,
- struct tep_record *record,
- struct tep_event *event,
- void *context);
-
-typedef int (*tep_plugin_load_func)(struct tep_handle *tep);
-typedef int (*tep_plugin_unload_func)(struct tep_handle *tep);
-
-struct tep_plugin_option {
- struct tep_plugin_option *next;
- void *handle;
- char *file;
- char *name;
- char *plugin_alias;
- char *description;
- const char *value;
- void *priv;
- int set;
-};
-
-/*
- * Plugin hooks that can be called:
- *
- * TEP_PLUGIN_LOADER: (required)
- * The function name to initialized the plugin.
- *
- * int TEP_PLUGIN_LOADER(struct tep_handle *tep)
- *
- * TEP_PLUGIN_UNLOADER: (optional)
- * The function called just before unloading
- *
- * int TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
- *
- * TEP_PLUGIN_OPTIONS: (optional)
- * Plugin options that can be set before loading
- *
- * struct tep_plugin_option TEP_PLUGIN_OPTIONS[] = {
- * {
- * .name = "option-name",
- * .plugin_alias = "override-file-name", (optional)
- * .description = "description of option to show users",
- * },
- * {
- * .name = NULL,
- * },
- * };
- *
- * Array must end with .name = NULL;
- *
- *
- * .plugin_alias is used to give a shorter name to access
- * the vairable. Useful if a plugin handles more than one event.
- *
- * If .value is not set, then it is considered a boolean and only
- * .set will be processed. If .value is defined, then it is considered
- * a string option and .set will be ignored.
- *
- * TEP_PLUGIN_ALIAS: (optional)
- * The name to use for finding options (uses filename if not defined)
- */
-#define TEP_PLUGIN_LOADER tep_plugin_loader
-#define TEP_PLUGIN_UNLOADER tep_plugin_unloader
-#define TEP_PLUGIN_OPTIONS tep_plugin_options
-#define TEP_PLUGIN_ALIAS tep_plugin_alias
-#define _MAKE_STR(x) #x
-#define MAKE_STR(x) _MAKE_STR(x)
-#define TEP_PLUGIN_LOADER_NAME MAKE_STR(TEP_PLUGIN_LOADER)
-#define TEP_PLUGIN_UNLOADER_NAME MAKE_STR(TEP_PLUGIN_UNLOADER)
-#define TEP_PLUGIN_OPTIONS_NAME MAKE_STR(TEP_PLUGIN_OPTIONS)
-#define TEP_PLUGIN_ALIAS_NAME MAKE_STR(TEP_PLUGIN_ALIAS)
-
-enum tep_format_flags {
- TEP_FIELD_IS_ARRAY = 1,
- TEP_FIELD_IS_POINTER = 2,
- TEP_FIELD_IS_SIGNED = 4,
- TEP_FIELD_IS_STRING = 8,
- TEP_FIELD_IS_DYNAMIC = 16,
- TEP_FIELD_IS_LONG = 32,
- TEP_FIELD_IS_FLAG = 64,
- TEP_FIELD_IS_SYMBOLIC = 128,
- TEP_FIELD_IS_RELATIVE = 256,
-};
-
-struct tep_format_field {
- struct tep_format_field *next;
- struct tep_event *event;
- char *type;
- char *name;
- char *alias;
- int offset;
- int size;
- unsigned int arraylen;
- unsigned int elementsize;
- unsigned long flags;
-};
-
-struct tep_format {
- int nr_common;
- int nr_fields;
- struct tep_format_field *common_fields;
- struct tep_format_field *fields;
-};
-
-struct tep_print_arg_atom {
- char *atom;
-};
-
-struct tep_print_arg_string {
- char *string;
- struct tep_format_field *field;
-};
-
-struct tep_print_arg_bitmask {
- char *bitmask;
- struct tep_format_field *field;
-};
-
-struct tep_print_arg_field {
- char *name;
- struct tep_format_field *field;
-};
-
-struct tep_print_flag_sym {
- struct tep_print_flag_sym *next;
- char *value;
- char *str;
-};
-
-struct tep_print_arg_typecast {
- char *type;
- struct tep_print_arg *item;
-};
-
-struct tep_print_arg_flags {
- struct tep_print_arg *field;
- char *delim;
- struct tep_print_flag_sym *flags;
-};
-
-struct tep_print_arg_symbol {
- struct tep_print_arg *field;
- struct tep_print_flag_sym *symbols;
-};
-
-struct tep_print_arg_hex {
- struct tep_print_arg *field;
- struct tep_print_arg *size;
-};
-
-struct tep_print_arg_int_array {
- struct tep_print_arg *field;
- struct tep_print_arg *count;
- struct tep_print_arg *el_size;
-};
-
-struct tep_print_arg_dynarray {
- struct tep_format_field *field;
- struct tep_print_arg *index;
-};
-
-struct tep_print_arg;
-
-struct tep_print_arg_op {
- char *op;
- int prio;
- struct tep_print_arg *left;
- struct tep_print_arg *right;
-};
-
-struct tep_function_handler;
-
-struct tep_print_arg_func {
- struct tep_function_handler *func;
- struct tep_print_arg *args;
-};
-
-enum tep_print_arg_type {
- TEP_PRINT_NULL,
- TEP_PRINT_ATOM,
- TEP_PRINT_FIELD,
- TEP_PRINT_FLAGS,
- TEP_PRINT_SYMBOL,
- TEP_PRINT_HEX,
- TEP_PRINT_INT_ARRAY,
- TEP_PRINT_TYPE,
- TEP_PRINT_STRING,
- TEP_PRINT_BSTRING,
- TEP_PRINT_DYNAMIC_ARRAY,
- TEP_PRINT_OP,
- TEP_PRINT_FUNC,
- TEP_PRINT_BITMASK,
- TEP_PRINT_DYNAMIC_ARRAY_LEN,
- TEP_PRINT_HEX_STR,
-};
-
-struct tep_print_arg {
- struct tep_print_arg *next;
- enum tep_print_arg_type type;
- union {
- struct tep_print_arg_atom atom;
- struct tep_print_arg_field field;
- struct tep_print_arg_typecast typecast;
- struct tep_print_arg_flags flags;
- struct tep_print_arg_symbol symbol;
- struct tep_print_arg_hex hex;
- struct tep_print_arg_int_array int_array;
- struct tep_print_arg_func func;
- struct tep_print_arg_string string;
- struct tep_print_arg_bitmask bitmask;
- struct tep_print_arg_op op;
- struct tep_print_arg_dynarray dynarray;
- };
-};
-
-struct tep_print_parse;
-
-struct tep_print_fmt {
- char *format;
- struct tep_print_arg *args;
- struct tep_print_parse *print_cache;
-};
-
-struct tep_event {
- struct tep_handle *tep;
- char *name;
- int id;
- int flags;
- struct tep_format format;
- struct tep_print_fmt print_fmt;
- char *system;
- tep_event_handler_func handler;
- void *context;
-};
-
-enum {
- TEP_EVENT_FL_ISFTRACE = 0x01,
- TEP_EVENT_FL_ISPRINT = 0x02,
- TEP_EVENT_FL_ISBPRINT = 0x04,
- TEP_EVENT_FL_ISFUNCENT = 0x10,
- TEP_EVENT_FL_ISFUNCRET = 0x20,
- TEP_EVENT_FL_NOHANDLE = 0x40,
- TEP_EVENT_FL_PRINTRAW = 0x80,
-
- TEP_EVENT_FL_FAILED = 0x80000000
-};
-
-enum tep_event_sort_type {
- TEP_EVENT_SORT_ID,
- TEP_EVENT_SORT_NAME,
- TEP_EVENT_SORT_SYSTEM,
-};
-
-enum tep_event_type {
- TEP_EVENT_ERROR,
- TEP_EVENT_NONE,
- TEP_EVENT_SPACE,
- TEP_EVENT_NEWLINE,
- TEP_EVENT_OP,
- TEP_EVENT_DELIM,
- TEP_EVENT_ITEM,
- TEP_EVENT_DQUOTE,
- TEP_EVENT_SQUOTE,
-};
-
-typedef unsigned long long (*tep_func_handler)(struct trace_seq *s,
- unsigned long long *args);
-
-enum tep_func_arg_type {
- TEP_FUNC_ARG_VOID,
- TEP_FUNC_ARG_INT,
- TEP_FUNC_ARG_LONG,
- TEP_FUNC_ARG_STRING,
- TEP_FUNC_ARG_PTR,
- TEP_FUNC_ARG_MAX_TYPES
-};
-
-enum tep_flag {
- TEP_NSEC_OUTPUT = 1, /* output in NSECS */
- TEP_DISABLE_SYS_PLUGINS = 1 << 1,
- TEP_DISABLE_PLUGINS = 1 << 2,
-};
-
-#define TEP_ERRORS \
- _PE(MEM_ALLOC_FAILED, "failed to allocate memory"), \
- _PE(PARSE_EVENT_FAILED, "failed to parse event"), \
- _PE(READ_ID_FAILED, "failed to read event id"), \
- _PE(READ_FORMAT_FAILED, "failed to read event format"), \
- _PE(READ_PRINT_FAILED, "failed to read event print fmt"), \
- _PE(OLD_FTRACE_ARG_FAILED,"failed to allocate field name for ftrace"),\
- _PE(INVALID_ARG_TYPE, "invalid argument type"), \
- _PE(INVALID_EXP_TYPE, "invalid expression type"), \
- _PE(INVALID_OP_TYPE, "invalid operator type"), \
- _PE(INVALID_EVENT_NAME, "invalid event name"), \
- _PE(EVENT_NOT_FOUND, "no event found"), \
- _PE(SYNTAX_ERROR, "syntax error"), \
- _PE(ILLEGAL_RVALUE, "illegal rvalue"), \
- _PE(ILLEGAL_LVALUE, "illegal lvalue for string comparison"), \
- _PE(INVALID_REGEX, "regex did not compute"), \
- _PE(ILLEGAL_STRING_CMP, "illegal comparison for string"), \
- _PE(ILLEGAL_INTEGER_CMP,"illegal comparison for integer"), \
- _PE(REPARENT_NOT_OP, "cannot reparent other than OP"), \
- _PE(REPARENT_FAILED, "failed to reparent filter OP"), \
- _PE(BAD_FILTER_ARG, "bad arg in filter tree"), \
- _PE(UNEXPECTED_TYPE, "unexpected type (not a value)"), \
- _PE(ILLEGAL_TOKEN, "illegal token"), \
- _PE(INVALID_PAREN, "open parenthesis cannot come here"), \
- _PE(UNBALANCED_PAREN, "unbalanced number of parenthesis"), \
- _PE(UNKNOWN_TOKEN, "unknown token"), \
- _PE(FILTER_NOT_FOUND, "no filter found"), \
- _PE(NOT_A_NUMBER, "must have number field"), \
- _PE(NO_FILTER, "no filters exists"), \
- _PE(FILTER_MISS, "record does not match to filter")
-
-#undef _PE
-#define _PE(__code, __str) TEP_ERRNO__ ## __code
-enum tep_errno {
- TEP_ERRNO__SUCCESS = 0,
- TEP_ERRNO__FILTER_MATCH = TEP_ERRNO__SUCCESS,
-
- /*
- * Choose an arbitrary negative big number not to clash with standard
- * errno since SUS requires the errno has distinct positive values.
- * See 'Issue 6' in the link below.
- *
- * https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
- */
- __TEP_ERRNO__START = -100000,
-
- TEP_ERRORS,
-
- __TEP_ERRNO__END,
-};
-#undef _PE
-
-struct tep_plugin_list;
-
-#define INVALID_PLUGIN_LIST_OPTION ((char **)((unsigned long)-1))
-
-enum tep_plugin_load_priority {
- TEP_PLUGIN_FIRST,
- TEP_PLUGIN_LAST,
-};
-
-int tep_add_plugin_path(struct tep_handle *tep, char *path,
- enum tep_plugin_load_priority prio);
-struct tep_plugin_list *tep_load_plugins(struct tep_handle *tep);
-void tep_unload_plugins(struct tep_plugin_list *plugin_list,
- struct tep_handle *tep);
-void tep_load_plugins_hook(struct tep_handle *tep, const char *suffix,
- void (*load_plugin)(struct tep_handle *tep,
- const char *path,
- const char *name,
- void *data),
- void *data);
-char **tep_plugin_list_options(void);
-void tep_plugin_free_options_list(char **list);
-int tep_plugin_add_options(const char *name,
- struct tep_plugin_option *options);
-int tep_plugin_add_option(const char *name, const char *val);
-void tep_plugin_remove_options(struct tep_plugin_option *options);
-void tep_plugin_print_options(struct trace_seq *s);
-void tep_print_plugins(struct trace_seq *s,
- const char *prefix, const char *suffix,
- const struct tep_plugin_list *list);
-
-/* tep_handle */
-typedef char *(tep_func_resolver_t)(void *priv,
- unsigned long long *addrp, char **modp);
-void tep_set_flag(struct tep_handle *tep, int flag);
-void tep_clear_flag(struct tep_handle *tep, enum tep_flag flag);
-bool tep_test_flag(struct tep_handle *tep, enum tep_flag flags);
-
-static inline int tep_is_bigendian(void)
-{
- unsigned char str[] = { 0x1, 0x2, 0x3, 0x4 };
- unsigned int val;
-
- memcpy(&val, str, 4);
- return val == 0x01020304;
-}
-
-/* taken from kernel/trace/trace.h */
-enum trace_flag_type {
- TRACE_FLAG_IRQS_OFF = 0x01,
- TRACE_FLAG_IRQS_NOSUPPORT = 0x02,
- TRACE_FLAG_NEED_RESCHED = 0x04,
- TRACE_FLAG_HARDIRQ = 0x08,
- TRACE_FLAG_SOFTIRQ = 0x10,
-};
-
-int tep_set_function_resolver(struct tep_handle *tep,
- tep_func_resolver_t *func, void *priv);
-void tep_reset_function_resolver(struct tep_handle *tep);
-int tep_register_comm(struct tep_handle *tep, const char *comm, int pid);
-int tep_override_comm(struct tep_handle *tep, const char *comm, int pid);
-int tep_register_function(struct tep_handle *tep, char *name,
- unsigned long long addr, char *mod);
-int tep_register_print_string(struct tep_handle *tep, const char *fmt,
- unsigned long long addr);
-bool tep_is_pid_registered(struct tep_handle *tep, int pid);
-
-struct tep_event *tep_get_event(struct tep_handle *tep, int index);
-
-#define TEP_PRINT_INFO "INFO"
-#define TEP_PRINT_INFO_RAW "INFO_RAW"
-#define TEP_PRINT_COMM "COMM"
-#define TEP_PRINT_LATENCY "LATENCY"
-#define TEP_PRINT_NAME "NAME"
-#define TEP_PRINT_PID 1U
-#define TEP_PRINT_TIME 2U
-#define TEP_PRINT_CPU 3U
-
-void tep_print_event(struct tep_handle *tep, struct trace_seq *s,
- struct tep_record *record, const char *fmt, ...)
- __attribute__ ((format (printf, 4, 5)));
-
-int tep_parse_header_page(struct tep_handle *tep, char *buf, unsigned long size,
- int long_size);
-
-enum tep_errno tep_parse_event(struct tep_handle *tep, const char *buf,
- unsigned long size, const char *sys);
-enum tep_errno tep_parse_format(struct tep_handle *tep,
- struct tep_event **eventp,
- const char *buf,
- unsigned long size, const char *sys);
-
-void *tep_get_field_raw(struct trace_seq *s, struct tep_event *event,
- const char *name, struct tep_record *record,
- int *len, int err);
-
-int tep_get_field_val(struct trace_seq *s, struct tep_event *event,
- const char *name, struct tep_record *record,
- unsigned long long *val, int err);
-int tep_get_common_field_val(struct trace_seq *s, struct tep_event *event,
- const char *name, struct tep_record *record,
- unsigned long long *val, int err);
-int tep_get_any_field_val(struct trace_seq *s, struct tep_event *event,
- const char *name, struct tep_record *record,
- unsigned long long *val, int err);
-
-int tep_print_num_field(struct trace_seq *s, const char *fmt,
- struct tep_event *event, const char *name,
- struct tep_record *record, int err);
-
-int tep_print_func_field(struct trace_seq *s, const char *fmt,
- struct tep_event *event, const char *name,
- struct tep_record *record, int err);
-
-enum tep_reg_handler {
- TEP_REGISTER_SUCCESS = 0,
- TEP_REGISTER_SUCCESS_OVERWRITE,
-};
-
-int tep_register_event_handler(struct tep_handle *tep, int id,
- const char *sys_name, const char *event_name,
- tep_event_handler_func func, void *context);
-int tep_unregister_event_handler(struct tep_handle *tep, int id,
- const char *sys_name, const char *event_name,
- tep_event_handler_func func, void *context);
-int tep_register_print_function(struct tep_handle *tep,
- tep_func_handler func,
- enum tep_func_arg_type ret_type,
- char *name, ...);
-int tep_unregister_print_function(struct tep_handle *tep,
- tep_func_handler func, char *name);
-
-struct tep_format_field *tep_find_common_field(struct tep_event *event, const char *name);
-struct tep_format_field *tep_find_field(struct tep_event *event, const char *name);
-struct tep_format_field *tep_find_any_field(struct tep_event *event, const char *name);
-
-const char *tep_find_function(struct tep_handle *tep, unsigned long long addr);
-unsigned long long
-tep_find_function_address(struct tep_handle *tep, unsigned long long addr);
-unsigned long long tep_read_number(struct tep_handle *tep, const void *ptr, int size);
-int tep_read_number_field(struct tep_format_field *field, const void *data,
- unsigned long long *value);
-
-struct tep_event *tep_get_first_event(struct tep_handle *tep);
-int tep_get_events_count(struct tep_handle *tep);
-struct tep_event *tep_find_event(struct tep_handle *tep, int id);
-
-struct tep_event *
-tep_find_event_by_name(struct tep_handle *tep, const char *sys, const char *name);
-struct tep_event *
-tep_find_event_by_record(struct tep_handle *tep, struct tep_record *record);
-
-int tep_data_type(struct tep_handle *tep, struct tep_record *rec);
-int tep_data_pid(struct tep_handle *tep, struct tep_record *rec);
-int tep_data_preempt_count(struct tep_handle *tep, struct tep_record *rec);
-int tep_data_flags(struct tep_handle *tep, struct tep_record *rec);
-const char *tep_data_comm_from_pid(struct tep_handle *tep, int pid);
-struct tep_cmdline;
-struct tep_cmdline *tep_data_pid_from_comm(struct tep_handle *tep, const char *comm,
- struct tep_cmdline *next);
-int tep_cmdline_pid(struct tep_handle *tep, struct tep_cmdline *cmdline);
-
-void tep_print_field(struct trace_seq *s, void *data,
- struct tep_format_field *field);
-void tep_print_fields(struct trace_seq *s, void *data,
- int size __maybe_unused, struct tep_event *event);
-int tep_strerror(struct tep_handle *tep, enum tep_errno errnum,
- char *buf, size_t buflen);
-
-struct tep_event **tep_list_events(struct tep_handle *tep, enum tep_event_sort_type);
-struct tep_event **tep_list_events_copy(struct tep_handle *tep,
- enum tep_event_sort_type);
-struct tep_format_field **tep_event_common_fields(struct tep_event *event);
-struct tep_format_field **tep_event_fields(struct tep_event *event);
-
-enum tep_endian {
- TEP_LITTLE_ENDIAN = 0,
- TEP_BIG_ENDIAN
-};
-int tep_get_cpus(struct tep_handle *tep);
-void tep_set_cpus(struct tep_handle *tep, int cpus);
-int tep_get_long_size(struct tep_handle *tep);
-void tep_set_long_size(struct tep_handle *tep, int long_size);
-int tep_get_page_size(struct tep_handle *tep);
-void tep_set_page_size(struct tep_handle *tep, int _page_size);
-bool tep_is_file_bigendian(struct tep_handle *tep);
-void tep_set_file_bigendian(struct tep_handle *tep, enum tep_endian endian);
-bool tep_is_local_bigendian(struct tep_handle *tep);
-void tep_set_local_bigendian(struct tep_handle *tep, enum tep_endian endian);
-int tep_get_header_page_size(struct tep_handle *tep);
-int tep_get_header_timestamp_size(struct tep_handle *tep);
-bool tep_is_old_format(struct tep_handle *tep);
-void tep_set_test_filters(struct tep_handle *tep, int test_filters);
-
-struct tep_handle *tep_alloc(void);
-void tep_free(struct tep_handle *tep);
-void tep_ref(struct tep_handle *tep);
-void tep_unref(struct tep_handle *tep);
-int tep_get_ref(struct tep_handle *tep);
-
-/* for debugging */
-void tep_print_funcs(struct tep_handle *tep);
-void tep_print_printk(struct tep_handle *tep);
-
-/* ----------------------- filtering ----------------------- */
-
-enum tep_filter_boolean_type {
- TEP_FILTER_FALSE,
- TEP_FILTER_TRUE,
-};
-
-enum tep_filter_op_type {
- TEP_FILTER_OP_AND = 1,
- TEP_FILTER_OP_OR,
- TEP_FILTER_OP_NOT,
-};
-
-enum tep_filter_cmp_type {
- TEP_FILTER_CMP_NONE,
- TEP_FILTER_CMP_EQ,
- TEP_FILTER_CMP_NE,
- TEP_FILTER_CMP_GT,
- TEP_FILTER_CMP_LT,
- TEP_FILTER_CMP_GE,
- TEP_FILTER_CMP_LE,
- TEP_FILTER_CMP_MATCH,
- TEP_FILTER_CMP_NOT_MATCH,
- TEP_FILTER_CMP_REGEX,
- TEP_FILTER_CMP_NOT_REGEX,
-};
-
-enum tep_filter_exp_type {
- TEP_FILTER_EXP_NONE,
- TEP_FILTER_EXP_ADD,
- TEP_FILTER_EXP_SUB,
- TEP_FILTER_EXP_MUL,
- TEP_FILTER_EXP_DIV,
- TEP_FILTER_EXP_MOD,
- TEP_FILTER_EXP_RSHIFT,
- TEP_FILTER_EXP_LSHIFT,
- TEP_FILTER_EXP_AND,
- TEP_FILTER_EXP_OR,
- TEP_FILTER_EXP_XOR,
- TEP_FILTER_EXP_NOT,
-};
-
-enum tep_filter_arg_type {
- TEP_FILTER_ARG_NONE,
- TEP_FILTER_ARG_BOOLEAN,
- TEP_FILTER_ARG_VALUE,
- TEP_FILTER_ARG_FIELD,
- TEP_FILTER_ARG_EXP,
- TEP_FILTER_ARG_OP,
- TEP_FILTER_ARG_NUM,
- TEP_FILTER_ARG_STR,
-};
-
-enum tep_filter_value_type {
- TEP_FILTER_NUMBER,
- TEP_FILTER_STRING,
- TEP_FILTER_CHAR
-};
-
-struct tep_filter_arg;
-
-struct tep_filter_arg_boolean {
- enum tep_filter_boolean_type value;
-};
-
-struct tep_filter_arg_field {
- struct tep_format_field *field;
-};
-
-struct tep_filter_arg_value {
- enum tep_filter_value_type type;
- union {
- char *str;
- unsigned long long val;
- };
-};
-
-struct tep_filter_arg_op {
- enum tep_filter_op_type type;
- struct tep_filter_arg *left;
- struct tep_filter_arg *right;
-};
-
-struct tep_filter_arg_exp {
- enum tep_filter_exp_type type;
- struct tep_filter_arg *left;
- struct tep_filter_arg *right;
-};
-
-struct tep_filter_arg_num {
- enum tep_filter_cmp_type type;
- struct tep_filter_arg *left;
- struct tep_filter_arg *right;
-};
-
-struct tep_filter_arg_str {
- enum tep_filter_cmp_type type;
- struct tep_format_field *field;
- char *val;
- char *buffer;
- regex_t reg;
-};
-
-struct tep_filter_arg {
- enum tep_filter_arg_type type;
- union {
- struct tep_filter_arg_boolean boolean;
- struct tep_filter_arg_field field;
- struct tep_filter_arg_value value;
- struct tep_filter_arg_op op;
- struct tep_filter_arg_exp exp;
- struct tep_filter_arg_num num;
- struct tep_filter_arg_str str;
- };
-};
-
-struct tep_filter_type {
- int event_id;
- struct tep_event *event;
- struct tep_filter_arg *filter;
-};
-
-#define TEP_FILTER_ERROR_BUFSZ 1024
-
-struct tep_event_filter {
- struct tep_handle *tep;
- int filters;
- struct tep_filter_type *event_filters;
- char error_buffer[TEP_FILTER_ERROR_BUFSZ];
-};
-
-struct tep_event_filter *tep_filter_alloc(struct tep_handle *tep);
-
-/* for backward compatibility */
-#define FILTER_NONE TEP_ERRNO__NO_FILTER
-#define FILTER_NOEXIST TEP_ERRNO__FILTER_NOT_FOUND
-#define FILTER_MISS TEP_ERRNO__FILTER_MISS
-#define FILTER_MATCH TEP_ERRNO__FILTER_MATCH
-
-enum tep_errno tep_filter_add_filter_str(struct tep_event_filter *filter,
- const char *filter_str);
-
-enum tep_errno tep_filter_match(struct tep_event_filter *filter,
- struct tep_record *record);
-
-int tep_filter_strerror(struct tep_event_filter *filter, enum tep_errno err,
- char *buf, size_t buflen);
-
-int tep_event_filtered(struct tep_event_filter *filter,
- int event_id);
-
-void tep_filter_reset(struct tep_event_filter *filter);
-
-void tep_filter_free(struct tep_event_filter *filter);
-
-char *tep_filter_make_string(struct tep_event_filter *filter, int event_id);
-
-int tep_filter_remove_event(struct tep_event_filter *filter,
- int event_id);
-
-int tep_filter_copy(struct tep_event_filter *dest, struct tep_event_filter *source);
-
-int tep_filter_compare(struct tep_event_filter *filter1, struct tep_event_filter *filter2);
-
-#endif /* _PARSE_EVENTS_H */
+++ /dev/null
-// SPDX-License-Identifier: LGPL-2.1
-/*
- * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
- *
- */
-
-#include <ctype.h>
-#include <stdio.h>
-#include <string.h>
-#include <dlfcn.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <dirent.h>
-#include <errno.h>
-#include "event-parse.h"
-#include "event-parse-local.h"
-#include "event-utils.h"
-#include "trace-seq.h"
-
-#define LOCAL_PLUGIN_DIR ".local/lib/traceevent/plugins/"
-
-static struct registered_plugin_options {
- struct registered_plugin_options *next;
- struct tep_plugin_option *options;
-} *registered_options;
-
-static struct trace_plugin_options {
- struct trace_plugin_options *next;
- char *plugin;
- char *option;
- char *value;
-} *trace_plugin_options;
-
-struct tep_plugin_list {
- struct tep_plugin_list *next;
- char *name;
- void *handle;
-};
-
-struct tep_plugins_dir {
- struct tep_plugins_dir *next;
- char *path;
- enum tep_plugin_load_priority prio;
-};
-
-static void lower_case(char *str)
-{
- if (!str)
- return;
- for (; *str; str++)
- *str = tolower(*str);
-}
-
-static int update_option_value(struct tep_plugin_option *op, const char *val)
-{
- char *op_val;
-
- if (!val) {
- /* toggle, only if option is boolean */
- if (op->value)
- /* Warn? */
- return 0;
- op->set ^= 1;
- return 0;
- }
-
- /*
- * If the option has a value then it takes a string
- * otherwise the option is a boolean.
- */
- if (op->value) {
- op->value = val;
- return 0;
- }
-
- /* Option is boolean, must be either "1", "0", "true" or "false" */
-
- op_val = strdup(val);
- if (!op_val)
- return -1;
- lower_case(op_val);
-
- if (strcmp(val, "1") == 0 || strcmp(val, "true") == 0)
- op->set = 1;
- else if (strcmp(val, "0") == 0 || strcmp(val, "false") == 0)
- op->set = 0;
- free(op_val);
-
- return 0;
-}
-
-/**
- * tep_plugin_list_options - get list of plugin options
- *
- * Returns an array of char strings that list the currently registered
- * plugin options in the format of <plugin>:<option>. This list can be
- * used by toggling the option.
- *
- * Returns NULL if there's no options registered. On error it returns
- * INVALID_PLUGIN_LIST_OPTION
- *
- * Must be freed with tep_plugin_free_options_list().
- */
-char **tep_plugin_list_options(void)
-{
- struct registered_plugin_options *reg;
- struct tep_plugin_option *op;
- char **list = NULL;
- char *name;
- int count = 0;
-
- for (reg = registered_options; reg; reg = reg->next) {
- for (op = reg->options; op->name; op++) {
- char *alias = op->plugin_alias ? op->plugin_alias : op->file;
- char **temp = list;
- int ret;
-
- ret = asprintf(&name, "%s:%s", alias, op->name);
- if (ret < 0)
- goto err;
-
- list = realloc(list, count + 2);
- if (!list) {
- list = temp;
- free(name);
- goto err;
- }
- list[count++] = name;
- list[count] = NULL;
- }
- }
- return list;
-
- err:
- while (--count >= 0)
- free(list[count]);
- free(list);
-
- return INVALID_PLUGIN_LIST_OPTION;
-}
-
-void tep_plugin_free_options_list(char **list)
-{
- int i;
-
- if (!list)
- return;
-
- if (list == INVALID_PLUGIN_LIST_OPTION)
- return;
-
- for (i = 0; list[i]; i++)
- free(list[i]);
-
- free(list);
-}
-
-static int
-update_option(const char *file, struct tep_plugin_option *option)
-{
- struct trace_plugin_options *op;
- char *plugin;
- int ret = 0;
-
- if (option->plugin_alias) {
- plugin = strdup(option->plugin_alias);
- if (!plugin)
- return -1;
- } else {
- char *p;
- plugin = strdup(file);
- if (!plugin)
- return -1;
- p = strstr(plugin, ".");
- if (p)
- *p = '\0';
- }
-
- /* first look for named options */
- for (op = trace_plugin_options; op; op = op->next) {
- if (!op->plugin)
- continue;
- if (strcmp(op->plugin, plugin) != 0)
- continue;
- if (strcmp(op->option, option->name) != 0)
- continue;
-
- ret = update_option_value(option, op->value);
- if (ret)
- goto out;
- break;
- }
-
- /* first look for unnamed options */
- for (op = trace_plugin_options; op; op = op->next) {
- if (op->plugin)
- continue;
- if (strcmp(op->option, option->name) != 0)
- continue;
-
- ret = update_option_value(option, op->value);
- break;
- }
-
- out:
- free(plugin);
- return ret;
-}
-
-/**
- * tep_plugin_add_options - Add a set of options by a plugin
- * @name: The name of the plugin adding the options
- * @options: The set of options being loaded
- *
- * Sets the options with the values that have been added by user.
- */
-int tep_plugin_add_options(const char *name,
- struct tep_plugin_option *options)
-{
- struct registered_plugin_options *reg;
-
- reg = malloc(sizeof(*reg));
- if (!reg)
- return -1;
- reg->next = registered_options;
- reg->options = options;
- registered_options = reg;
-
- while (options->name) {
- update_option(name, options);
- options++;
- }
- return 0;
-}
-
-/**
- * tep_plugin_remove_options - remove plugin options that were registered
- * @options: Options to removed that were registered with tep_plugin_add_options
- */
-void tep_plugin_remove_options(struct tep_plugin_option *options)
-{
- struct registered_plugin_options **last;
- struct registered_plugin_options *reg;
-
- for (last = ®istered_options; *last; last = &(*last)->next) {
- if ((*last)->options == options) {
- reg = *last;
- *last = reg->next;
- free(reg);
- return;
- }
- }
-}
-
-static int parse_option_name(char **option, char **plugin)
-{
- char *p;
-
- *plugin = NULL;
-
- if ((p = strstr(*option, ":"))) {
- *plugin = *option;
- *p = '\0';
- *option = strdup(p + 1);
- if (!*option)
- return -1;
- }
- return 0;
-}
-
-static struct tep_plugin_option *
-find_registered_option(const char *plugin, const char *option)
-{
- struct registered_plugin_options *reg;
- struct tep_plugin_option *op;
- const char *op_plugin;
-
- for (reg = registered_options; reg; reg = reg->next) {
- for (op = reg->options; op->name; op++) {
- if (op->plugin_alias)
- op_plugin = op->plugin_alias;
- else
- op_plugin = op->file;
-
- if (plugin && strcmp(plugin, op_plugin) != 0)
- continue;
- if (strcmp(option, op->name) != 0)
- continue;
-
- return op;
- }
- }
-
- return NULL;
-}
-
-static int process_option(const char *plugin, const char *option, const char *val)
-{
- struct tep_plugin_option *op;
-
- op = find_registered_option(plugin, option);
- if (!op)
- return 0;
-
- return update_option_value(op, val);
-}
-
-/**
- * tep_plugin_add_option - add an option/val pair to set plugin options
- * @name: The name of the option (format: <plugin>:<option> or just <option>)
- * @val: (optional) the value for the option
- *
- * Modify a plugin option. If @val is given than the value of the option
- * is set (note, some options just take a boolean, so @val must be either
- * "1" or "0" or "true" or "false").
- */
-int tep_plugin_add_option(const char *name, const char *val)
-{
- struct trace_plugin_options *op;
- char *option_str;
- char *plugin;
-
- option_str = strdup(name);
- if (!option_str)
- return -ENOMEM;
-
- if (parse_option_name(&option_str, &plugin) < 0)
- return -ENOMEM;
-
- /* If the option exists, update the val */
- for (op = trace_plugin_options; op; op = op->next) {
- /* Both must be NULL or not NULL */
- if ((!plugin || !op->plugin) && plugin != op->plugin)
- continue;
- if (plugin && strcmp(plugin, op->plugin) != 0)
- continue;
- if (strcmp(op->option, option_str) != 0)
- continue;
-
- /* update option */
- free(op->value);
- if (val) {
- op->value = strdup(val);
- if (!op->value)
- goto out_free;
- } else
- op->value = NULL;
-
- /* plugin and option_str don't get freed at the end */
- free(plugin);
- free(option_str);
-
- plugin = op->plugin;
- option_str = op->option;
- break;
- }
-
- /* If not found, create */
- if (!op) {
- op = malloc(sizeof(*op));
- if (!op)
- goto out_free;
- memset(op, 0, sizeof(*op));
- op->plugin = plugin;
- op->option = option_str;
- if (val) {
- op->value = strdup(val);
- if (!op->value) {
- free(op);
- goto out_free;
- }
- }
- op->next = trace_plugin_options;
- trace_plugin_options = op;
- }
-
- return process_option(plugin, option_str, val);
-
-out_free:
- free(plugin);
- free(option_str);
- return -ENOMEM;
-}
-
-static void print_op_data(struct trace_seq *s, const char *name,
- const char *op)
-{
- if (op)
- trace_seq_printf(s, "%8s:\t%s\n", name, op);
-}
-
-/**
- * tep_plugin_print_options - print out the registered plugin options
- * @s: The trace_seq descriptor to write the plugin options into
- *
- * Writes a list of options into trace_seq @s.
- */
-void tep_plugin_print_options(struct trace_seq *s)
-{
- struct registered_plugin_options *reg;
- struct tep_plugin_option *op;
-
- for (reg = registered_options; reg; reg = reg->next) {
- if (reg != registered_options)
- trace_seq_printf(s, "============\n");
- for (op = reg->options; op->name; op++) {
- if (op != reg->options)
- trace_seq_printf(s, "------------\n");
- print_op_data(s, "file", op->file);
- print_op_data(s, "plugin", op->plugin_alias);
- print_op_data(s, "option", op->name);
- print_op_data(s, "desc", op->description);
- print_op_data(s, "value", op->value);
- trace_seq_printf(s, "%8s:\t%d\n", "set", op->set);
- }
- }
-}
-
-/**
- * tep_print_plugins - print out the list of plugins loaded
- * @s: the trace_seq descripter to write to
- * @prefix: The prefix string to add before listing the option name
- * @suffix: The suffix string ot append after the option name
- * @list: The list of plugins (usually returned by tep_load_plugins()
- *
- * Writes to the trace_seq @s the list of plugins (files) that is
- * returned by tep_load_plugins(). Use @prefix and @suffix for formating:
- * @prefix = " ", @suffix = "\n".
- */
-void tep_print_plugins(struct trace_seq *s,
- const char *prefix, const char *suffix,
- const struct tep_plugin_list *list)
-{
- while (list) {
- trace_seq_printf(s, "%s%s%s", prefix, list->name, suffix);
- list = list->next;
- }
-}
-
-static void
-load_plugin(struct tep_handle *tep, const char *path,
- const char *file, void *data)
-{
- struct tep_plugin_list **plugin_list = data;
- struct tep_plugin_option *options;
- tep_plugin_load_func func;
- struct tep_plugin_list *list;
- const char *alias;
- char *plugin;
- void *handle;
- int ret;
-
- ret = asprintf(&plugin, "%s/%s", path, file);
- if (ret < 0) {
- warning("could not allocate plugin memory\n");
- return;
- }
-
- handle = dlopen(plugin, RTLD_NOW | RTLD_GLOBAL);
- if (!handle) {
- warning("could not load plugin '%s'\n%s\n",
- plugin, dlerror());
- goto out_free;
- }
-
- alias = dlsym(handle, TEP_PLUGIN_ALIAS_NAME);
- if (!alias)
- alias = file;
-
- options = dlsym(handle, TEP_PLUGIN_OPTIONS_NAME);
- if (options) {
- while (options->name) {
- ret = update_option(alias, options);
- if (ret < 0)
- goto out_free;
- options++;
- }
- }
-
- func = dlsym(handle, TEP_PLUGIN_LOADER_NAME);
- if (!func) {
- warning("could not find func '%s' in plugin '%s'\n%s\n",
- TEP_PLUGIN_LOADER_NAME, plugin, dlerror());
- goto out_free;
- }
-
- list = malloc(sizeof(*list));
- if (!list) {
- warning("could not allocate plugin memory\n");
- goto out_free;
- }
-
- list->next = *plugin_list;
- list->handle = handle;
- list->name = plugin;
- *plugin_list = list;
-
- pr_stat("registering plugin: %s", plugin);
- func(tep);
- return;
-
- out_free:
- free(plugin);
-}
-
-static void
-load_plugins_dir(struct tep_handle *tep, const char *suffix,
- const char *path,
- void (*load_plugin)(struct tep_handle *tep,
- const char *path,
- const char *name,
- void *data),
- void *data)
-{
- struct dirent *dent;
- struct stat st;
- DIR *dir;
- int ret;
-
- ret = stat(path, &st);
- if (ret < 0)
- return;
-
- if (!S_ISDIR(st.st_mode))
- return;
-
- dir = opendir(path);
- if (!dir)
- return;
-
- while ((dent = readdir(dir))) {
- const char *name = dent->d_name;
-
- if (strcmp(name, ".") == 0 ||
- strcmp(name, "..") == 0)
- continue;
-
- /* Only load plugins that end in suffix */
- if (strcmp(name + (strlen(name) - strlen(suffix)), suffix) != 0)
- continue;
-
- load_plugin(tep, path, name, data);
- }
-
- closedir(dir);
-}
-
-/**
- * tep_load_plugins_hook - call a user specified callback to load a plugin
- * @tep: handler to traceevent context
- * @suffix: filter only plugin files with given suffix
- * @load_plugin: user specified callback, called for each plugin file
- * @data: custom context, passed to @load_plugin
- *
- * Searches for traceevent plugin files and calls @load_plugin for each
- * The order of plugins search is:
- * - Directories, specified in @tep->plugins_dir and priority TEP_PLUGIN_FIRST
- * - Directory, specified at compile time with PLUGIN_TRACEEVENT_DIR
- * - Directory, specified by environment variable TRACEEVENT_PLUGIN_DIR
- * - In user's home: ~/.local/lib/traceevent/plugins/
- * - Directories, specified in @tep->plugins_dir and priority TEP_PLUGIN_LAST
- *
- */
-void tep_load_plugins_hook(struct tep_handle *tep, const char *suffix,
- void (*load_plugin)(struct tep_handle *tep,
- const char *path,
- const char *name,
- void *data),
- void *data)
-{
- struct tep_plugins_dir *dir = NULL;
- char *home;
- char *path;
- char *envdir;
- int ret;
-
- if (tep && tep->flags & TEP_DISABLE_PLUGINS)
- return;
-
- if (tep)
- dir = tep->plugins_dir;
- while (dir) {
- if (dir->prio == TEP_PLUGIN_FIRST)
- load_plugins_dir(tep, suffix, dir->path,
- load_plugin, data);
- dir = dir->next;
- }
-
- /*
- * If a system plugin directory was defined,
- * check that first.
- */
-#ifdef PLUGIN_DIR
- if (!tep || !(tep->flags & TEP_DISABLE_SYS_PLUGINS))
- load_plugins_dir(tep, suffix, PLUGIN_DIR,
- load_plugin, data);
-#endif
-
- /*
- * Next let the environment-set plugin directory
- * override the system defaults.
- */
- envdir = getenv("TRACEEVENT_PLUGIN_DIR");
- if (envdir)
- load_plugins_dir(tep, suffix, envdir, load_plugin, data);
-
- /*
- * Now let the home directory override the environment
- * or system defaults.
- */
- home = getenv("HOME");
- if (!home)
- return;
-
- ret = asprintf(&path, "%s/%s", home, LOCAL_PLUGIN_DIR);
- if (ret < 0) {
- warning("could not allocate plugin memory\n");
- return;
- }
-
- load_plugins_dir(tep, suffix, path, load_plugin, data);
-
- if (tep)
- dir = tep->plugins_dir;
- while (dir) {
- if (dir->prio == TEP_PLUGIN_LAST)
- load_plugins_dir(tep, suffix, dir->path,
- load_plugin, data);
- dir = dir->next;
- }
-
- free(path);
-}
-
-struct tep_plugin_list*
-tep_load_plugins(struct tep_handle *tep)
-{
- struct tep_plugin_list *list = NULL;
-
- tep_load_plugins_hook(tep, ".so", load_plugin, &list);
- return list;
-}
-
-/**
- * tep_add_plugin_path - Add a new plugin directory.
- * @tep: Trace event handler.
- * @path: Path to a directory. All plugin files in that
- * directory will be loaded.
- *@prio: Load priority of the plugins in that directory.
- *
- * Returns -1 in case of an error, 0 otherwise.
- */
-int tep_add_plugin_path(struct tep_handle *tep, char *path,
- enum tep_plugin_load_priority prio)
-{
- struct tep_plugins_dir *dir;
-
- if (!tep || !path)
- return -1;
-
- dir = calloc(1, sizeof(*dir));
- if (!dir)
- return -1;
-
- dir->path = strdup(path);
- if (!dir->path) {
- free(dir);
- return -1;
- }
- dir->prio = prio;
- dir->next = tep->plugins_dir;
- tep->plugins_dir = dir;
-
- return 0;
-}
-
-__hidden void free_tep_plugin_paths(struct tep_handle *tep)
-{
- struct tep_plugins_dir *dir;
-
- if (!tep)
- return;
-
- dir = tep->plugins_dir;
- while (dir) {
- tep->plugins_dir = tep->plugins_dir->next;
- free(dir->path);
- free(dir);
- dir = tep->plugins_dir;
- }
-}
-
-void
-tep_unload_plugins(struct tep_plugin_list *plugin_list, struct tep_handle *tep)
-{
- tep_plugin_unload_func func;
- struct tep_plugin_list *list;
-
- while (plugin_list) {
- list = plugin_list;
- plugin_list = list->next;
- func = dlsym(list->handle, TEP_PLUGIN_UNLOADER_NAME);
- if (func)
- func(tep);
- dlclose(list->handle);
- free(list->name);
- free(list);
- }
-}
+++ /dev/null
-/* SPDX-License-Identifier: LGPL-2.1 */
-/*
- * Copyright (C) 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
- *
- */
-#ifndef __UTIL_H
-#define __UTIL_H
-
-#include <ctype.h>
-
-/* Can be overridden */
-void warning(const char *fmt, ...);
-void pr_stat(const char *fmt, ...);
-void vpr_stat(const char *fmt, va_list ap);
-
-/* Always available */
-void __warning(const char *fmt, ...);
-void __pr_stat(const char *fmt, ...);
-
-void __vwarning(const char *fmt, ...);
-void __vpr_stat(const char *fmt, ...);
-
-#define min(x, y) ({ \
- typeof(x) _min1 = (x); \
- typeof(y) _min2 = (y); \
- (void) (&_min1 == &_min2); \
- _min1 < _min2 ? _min1 : _min2; })
-
-static inline char *strim(char *string)
-{
- char *ret;
-
- if (!string)
- return NULL;
- while (*string) {
- if (!isspace(*string))
- break;
- string++;
- }
- ret = string;
-
- string = ret + strlen(ret) - 1;
- while (string > ret) {
- if (!isspace(*string))
- break;
- string--;
- }
- string[1] = 0;
-
- return ret;
-}
-
-static inline int has_text(const char *text)
-{
- if (!text)
- return 0;
-
- while (*text) {
- if (!isspace(*text))
- return 1;
- text++;
- }
-
- return 0;
-}
-
-#endif
+++ /dev/null
-// SPDX-License-Identifier: LGPL-2.1
-/*
- * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
- *
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "kbuffer.h"
-
-#define MISSING_EVENTS (1UL << 31)
-#define MISSING_STORED (1UL << 30)
-
-#define COMMIT_MASK ((1 << 27) - 1)
-
-enum {
- KBUFFER_FL_HOST_BIG_ENDIAN = (1<<0),
- KBUFFER_FL_BIG_ENDIAN = (1<<1),
- KBUFFER_FL_LONG_8 = (1<<2),
- KBUFFER_FL_OLD_FORMAT = (1<<3),
-};
-
-#define ENDIAN_MASK (KBUFFER_FL_HOST_BIG_ENDIAN | KBUFFER_FL_BIG_ENDIAN)
-
-/** kbuffer
- * @timestamp - timestamp of current event
- * @lost_events - # of lost events between this subbuffer and previous
- * @flags - special flags of the kbuffer
- * @subbuffer - pointer to the sub-buffer page
- * @data - pointer to the start of data on the sub-buffer page
- * @index - index from @data to the @curr event data
- * @curr - offset from @data to the start of current event
- * (includes metadata)
- * @next - offset from @data to the start of next event
- * @size - The size of data on @data
- * @start - The offset from @subbuffer where @data lives
- *
- * @read_4 - Function to read 4 raw bytes (may swap)
- * @read_8 - Function to read 8 raw bytes (may swap)
- * @read_long - Function to read a long word (4 or 8 bytes with needed swap)
- */
-struct kbuffer {
- unsigned long long timestamp;
- long long lost_events;
- unsigned long flags;
- void *subbuffer;
- void *data;
- unsigned int index;
- unsigned int curr;
- unsigned int next;
- unsigned int size;
- unsigned int start;
-
- unsigned int (*read_4)(void *ptr);
- unsigned long long (*read_8)(void *ptr);
- unsigned long long (*read_long)(struct kbuffer *kbuf, void *ptr);
- int (*next_event)(struct kbuffer *kbuf);
-};
-
-static void *zmalloc(size_t size)
-{
- return calloc(1, size);
-}
-
-static int host_is_bigendian(void)
-{
- unsigned char str[] = { 0x1, 0x2, 0x3, 0x4 };
- unsigned int *ptr;
-
- ptr = (unsigned int *)str;
- return *ptr == 0x01020304;
-}
-
-static int do_swap(struct kbuffer *kbuf)
-{
- return ((kbuf->flags & KBUFFER_FL_HOST_BIG_ENDIAN) + kbuf->flags) &
- ENDIAN_MASK;
-}
-
-static unsigned long long __read_8(void *ptr)
-{
- unsigned long long data = *(unsigned long long *)ptr;
-
- return data;
-}
-
-static unsigned long long __read_8_sw(void *ptr)
-{
- unsigned long long data = *(unsigned long long *)ptr;
- unsigned long long swap;
-
- swap = ((data & 0xffULL) << 56) |
- ((data & (0xffULL << 8)) << 40) |
- ((data & (0xffULL << 16)) << 24) |
- ((data & (0xffULL << 24)) << 8) |
- ((data & (0xffULL << 32)) >> 8) |
- ((data & (0xffULL << 40)) >> 24) |
- ((data & (0xffULL << 48)) >> 40) |
- ((data & (0xffULL << 56)) >> 56);
-
- return swap;
-}
-
-static unsigned int __read_4(void *ptr)
-{
- unsigned int data = *(unsigned int *)ptr;
-
- return data;
-}
-
-static unsigned int __read_4_sw(void *ptr)
-{
- unsigned int data = *(unsigned int *)ptr;
- unsigned int swap;
-
- swap = ((data & 0xffULL) << 24) |
- ((data & (0xffULL << 8)) << 8) |
- ((data & (0xffULL << 16)) >> 8) |
- ((data & (0xffULL << 24)) >> 24);
-
- return swap;
-}
-
-static unsigned long long read_8(struct kbuffer *kbuf, void *ptr)
-{
- return kbuf->read_8(ptr);
-}
-
-static unsigned int read_4(struct kbuffer *kbuf, void *ptr)
-{
- return kbuf->read_4(ptr);
-}
-
-static unsigned long long __read_long_8(struct kbuffer *kbuf, void *ptr)
-{
- return kbuf->read_8(ptr);
-}
-
-static unsigned long long __read_long_4(struct kbuffer *kbuf, void *ptr)
-{
- return kbuf->read_4(ptr);
-}
-
-static unsigned long long read_long(struct kbuffer *kbuf, void *ptr)
-{
- return kbuf->read_long(kbuf, ptr);
-}
-
-static int calc_index(struct kbuffer *kbuf, void *ptr)
-{
- return (unsigned long)ptr - (unsigned long)kbuf->data;
-}
-
-static int __next_event(struct kbuffer *kbuf);
-
-/**
- * kbuffer_alloc - allocat a new kbuffer
- * @size; enum to denote size of word
- * @endian: enum to denote endianness
- *
- * Allocates and returns a new kbuffer.
- */
-struct kbuffer *
-kbuffer_alloc(enum kbuffer_long_size size, enum kbuffer_endian endian)
-{
- struct kbuffer *kbuf;
- int flags = 0;
-
- switch (size) {
- case KBUFFER_LSIZE_4:
- break;
- case KBUFFER_LSIZE_8:
- flags |= KBUFFER_FL_LONG_8;
- break;
- default:
- return NULL;
- }
-
- switch (endian) {
- case KBUFFER_ENDIAN_LITTLE:
- break;
- case KBUFFER_ENDIAN_BIG:
- flags |= KBUFFER_FL_BIG_ENDIAN;
- break;
- default:
- return NULL;
- }
-
- kbuf = zmalloc(sizeof(*kbuf));
- if (!kbuf)
- return NULL;
-
- kbuf->flags = flags;
-
- if (host_is_bigendian())
- kbuf->flags |= KBUFFER_FL_HOST_BIG_ENDIAN;
-
- if (do_swap(kbuf)) {
- kbuf->read_8 = __read_8_sw;
- kbuf->read_4 = __read_4_sw;
- } else {
- kbuf->read_8 = __read_8;
- kbuf->read_4 = __read_4;
- }
-
- if (kbuf->flags & KBUFFER_FL_LONG_8)
- kbuf->read_long = __read_long_8;
- else
- kbuf->read_long = __read_long_4;
-
- /* May be changed by kbuffer_set_old_format() */
- kbuf->next_event = __next_event;
-
- return kbuf;
-}
-
-/** kbuffer_free - free an allocated kbuffer
- * @kbuf: The kbuffer to free
- *
- * Can take NULL as a parameter.
- */
-void kbuffer_free(struct kbuffer *kbuf)
-{
- free(kbuf);
-}
-
-static unsigned int type4host(struct kbuffer *kbuf,
- unsigned int type_len_ts)
-{
- if (kbuf->flags & KBUFFER_FL_BIG_ENDIAN)
- return (type_len_ts >> 29) & 3;
- else
- return type_len_ts & 3;
-}
-
-static unsigned int len4host(struct kbuffer *kbuf,
- unsigned int type_len_ts)
-{
- if (kbuf->flags & KBUFFER_FL_BIG_ENDIAN)
- return (type_len_ts >> 27) & 7;
- else
- return (type_len_ts >> 2) & 7;
-}
-
-static unsigned int type_len4host(struct kbuffer *kbuf,
- unsigned int type_len_ts)
-{
- if (kbuf->flags & KBUFFER_FL_BIG_ENDIAN)
- return (type_len_ts >> 27) & ((1 << 5) - 1);
- else
- return type_len_ts & ((1 << 5) - 1);
-}
-
-static unsigned int ts4host(struct kbuffer *kbuf,
- unsigned int type_len_ts)
-{
- if (kbuf->flags & KBUFFER_FL_BIG_ENDIAN)
- return type_len_ts & ((1 << 27) - 1);
- else
- return type_len_ts >> 5;
-}
-
-/*
- * Linux 2.6.30 and earlier (not much ealier) had a different
- * ring buffer format. It should be obsolete, but we handle it anyway.
- */
-enum old_ring_buffer_type {
- OLD_RINGBUF_TYPE_PADDING,
- OLD_RINGBUF_TYPE_TIME_EXTEND,
- OLD_RINGBUF_TYPE_TIME_STAMP,
- OLD_RINGBUF_TYPE_DATA,
-};
-
-static unsigned int old_update_pointers(struct kbuffer *kbuf)
-{
- unsigned long long extend;
- unsigned int type_len_ts;
- unsigned int type;
- unsigned int len;
- unsigned int delta;
- unsigned int length;
- void *ptr = kbuf->data + kbuf->curr;
-
- type_len_ts = read_4(kbuf, ptr);
- ptr += 4;
-
- type = type4host(kbuf, type_len_ts);
- len = len4host(kbuf, type_len_ts);
- delta = ts4host(kbuf, type_len_ts);
-
- switch (type) {
- case OLD_RINGBUF_TYPE_PADDING:
- kbuf->next = kbuf->size;
- return 0;
-
- case OLD_RINGBUF_TYPE_TIME_EXTEND:
- extend = read_4(kbuf, ptr);
- extend <<= TS_SHIFT;
- extend += delta;
- delta = extend;
- ptr += 4;
- length = 0;
- break;
-
- case OLD_RINGBUF_TYPE_TIME_STAMP:
- /* should never happen! */
- kbuf->curr = kbuf->size;
- kbuf->next = kbuf->size;
- kbuf->index = kbuf->size;
- return -1;
- default:
- if (len)
- length = len * 4;
- else {
- length = read_4(kbuf, ptr);
- length -= 4;
- ptr += 4;
- }
- break;
- }
-
- kbuf->timestamp += delta;
- kbuf->index = calc_index(kbuf, ptr);
- kbuf->next = kbuf->index + length;
-
- return type;
-}
-
-static int __old_next_event(struct kbuffer *kbuf)
-{
- int type;
-
- do {
- kbuf->curr = kbuf->next;
- if (kbuf->next >= kbuf->size)
- return -1;
- type = old_update_pointers(kbuf);
- } while (type == OLD_RINGBUF_TYPE_TIME_EXTEND || type == OLD_RINGBUF_TYPE_PADDING);
-
- return 0;
-}
-
-static unsigned int
-translate_data(struct kbuffer *kbuf, void *data, void **rptr,
- unsigned long long *delta, int *length)
-{
- unsigned long long extend;
- unsigned int type_len_ts;
- unsigned int type_len;
-
- type_len_ts = read_4(kbuf, data);
- data += 4;
-
- type_len = type_len4host(kbuf, type_len_ts);
- *delta = ts4host(kbuf, type_len_ts);
-
- switch (type_len) {
- case KBUFFER_TYPE_PADDING:
- *length = read_4(kbuf, data);
- break;
-
- case KBUFFER_TYPE_TIME_EXTEND:
- case KBUFFER_TYPE_TIME_STAMP:
- extend = read_4(kbuf, data);
- data += 4;
- extend <<= TS_SHIFT;
- extend += *delta;
- *delta = extend;
- *length = 0;
- break;
-
- case 0:
- *length = read_4(kbuf, data) - 4;
- *length = (*length + 3) & ~3;
- data += 4;
- break;
- default:
- *length = type_len * 4;
- break;
- }
-
- *rptr = data;
-
- return type_len;
-}
-
-static unsigned int update_pointers(struct kbuffer *kbuf)
-{
- unsigned long long delta;
- unsigned int type_len;
- int length;
- void *ptr = kbuf->data + kbuf->curr;
-
- type_len = translate_data(kbuf, ptr, &ptr, &delta, &length);
-
- if (type_len == KBUFFER_TYPE_TIME_STAMP)
- kbuf->timestamp = delta;
- else
- kbuf->timestamp += delta;
-
- kbuf->index = calc_index(kbuf, ptr);
- kbuf->next = kbuf->index + length;
-
- return type_len;
-}
-
-/**
- * kbuffer_translate_data - read raw data to get a record
- * @swap: Set to 1 if bytes in words need to be swapped when read
- * @data: The raw data to read
- * @size: Address to store the size of the event data.
- *
- * Returns a pointer to the event data. To determine the entire
- * record size (record metadata + data) just add the difference between
- * @data and the returned value to @size.
- */
-void *kbuffer_translate_data(int swap, void *data, unsigned int *size)
-{
- unsigned long long delta;
- struct kbuffer kbuf;
- int type_len;
- int length;
- void *ptr;
-
- if (swap) {
- kbuf.read_8 = __read_8_sw;
- kbuf.read_4 = __read_4_sw;
- kbuf.flags = host_is_bigendian() ? 0 : KBUFFER_FL_BIG_ENDIAN;
- } else {
- kbuf.read_8 = __read_8;
- kbuf.read_4 = __read_4;
- kbuf.flags = host_is_bigendian() ? KBUFFER_FL_BIG_ENDIAN: 0;
- }
-
- type_len = translate_data(&kbuf, data, &ptr, &delta, &length);
- switch (type_len) {
- case KBUFFER_TYPE_PADDING:
- case KBUFFER_TYPE_TIME_EXTEND:
- case KBUFFER_TYPE_TIME_STAMP:
- return NULL;
- }
-
- *size = length;
-
- return ptr;
-}
-
-static int __next_event(struct kbuffer *kbuf)
-{
- int type;
-
- do {
- kbuf->curr = kbuf->next;
- if (kbuf->next >= kbuf->size)
- return -1;
- type = update_pointers(kbuf);
- } while (type == KBUFFER_TYPE_TIME_EXTEND ||
- type == KBUFFER_TYPE_TIME_STAMP ||
- type == KBUFFER_TYPE_PADDING);
-
- return 0;
-}
-
-static int next_event(struct kbuffer *kbuf)
-{
- return kbuf->next_event(kbuf);
-}
-
-/**
- * kbuffer_next_event - increment the current pointer
- * @kbuf: The kbuffer to read
- * @ts: Address to store the next record's timestamp (may be NULL to ignore)
- *
- * Increments the pointers into the subbuffer of the kbuffer to point to the
- * next event so that the next kbuffer_read_event() will return a
- * new event.
- *
- * Returns the data of the next event if a new event exists on the subbuffer,
- * NULL otherwise.
- */
-void *kbuffer_next_event(struct kbuffer *kbuf, unsigned long long *ts)
-{
- int ret;
-
- if (!kbuf || !kbuf->subbuffer)
- return NULL;
-
- ret = next_event(kbuf);
- if (ret < 0)
- return NULL;
-
- if (ts)
- *ts = kbuf->timestamp;
-
- return kbuf->data + kbuf->index;
-}
-
-/**
- * kbuffer_load_subbuffer - load a new subbuffer into the kbuffer
- * @kbuf: The kbuffer to load
- * @subbuffer: The subbuffer to load into @kbuf.
- *
- * Load a new subbuffer (page) into @kbuf. This will reset all
- * the pointers and update the @kbuf timestamp. The next read will
- * return the first event on @subbuffer.
- *
- * Returns 0 on succes, -1 otherwise.
- */
-int kbuffer_load_subbuffer(struct kbuffer *kbuf, void *subbuffer)
-{
- unsigned long long flags;
- void *ptr = subbuffer;
-
- if (!kbuf || !subbuffer)
- return -1;
-
- kbuf->subbuffer = subbuffer;
-
- kbuf->timestamp = read_8(kbuf, ptr);
- ptr += 8;
-
- kbuf->curr = 0;
-
- if (kbuf->flags & KBUFFER_FL_LONG_8)
- kbuf->start = 16;
- else
- kbuf->start = 12;
-
- kbuf->data = subbuffer + kbuf->start;
-
- flags = read_long(kbuf, ptr);
- kbuf->size = (unsigned int)flags & COMMIT_MASK;
-
- if (flags & MISSING_EVENTS) {
- if (flags & MISSING_STORED) {
- ptr = kbuf->data + kbuf->size;
- kbuf->lost_events = read_long(kbuf, ptr);
- } else
- kbuf->lost_events = -1;
- } else
- kbuf->lost_events = 0;
-
- kbuf->index = 0;
- kbuf->next = 0;
-
- next_event(kbuf);
-
- return 0;
-}
-
-/**
- * kbuffer_subbuf_timestamp - read the timestamp from a sub buffer
- * @kbuf: The kbuffer to load
- * @subbuf: The subbuffer to read from.
- *
- * Return the timestamp from a subbuffer.
- */
-unsigned long long kbuffer_subbuf_timestamp(struct kbuffer *kbuf, void *subbuf)
-{
- return kbuf->read_8(subbuf);
-}
-
-/**
- * kbuffer_ptr_delta - read the delta field from a record
- * @kbuf: The kbuffer to load
- * @ptr: The record in the buffe.
- *
- * Return the timestamp delta from a record
- */
-unsigned int kbuffer_ptr_delta(struct kbuffer *kbuf, void *ptr)
-{
- unsigned int type_len_ts;
-
- type_len_ts = read_4(kbuf, ptr);
- return ts4host(kbuf, type_len_ts);
-}
-
-
-/**
- * kbuffer_read_event - read the next event in the kbuffer subbuffer
- * @kbuf: The kbuffer to read from
- * @ts: The address to store the timestamp of the event (may be NULL to ignore)
- *
- * Returns a pointer to the data part of the current event.
- * NULL if no event is left on the subbuffer.
- */
-void *kbuffer_read_event(struct kbuffer *kbuf, unsigned long long *ts)
-{
- if (!kbuf || !kbuf->subbuffer)
- return NULL;
-
- if (kbuf->curr >= kbuf->size)
- return NULL;
-
- if (ts)
- *ts = kbuf->timestamp;
- return kbuf->data + kbuf->index;
-}
-
-/**
- * kbuffer_timestamp - Return the timestamp of the current event
- * @kbuf: The kbuffer to read from
- *
- * Returns the timestamp of the current (next) event.
- */
-unsigned long long kbuffer_timestamp(struct kbuffer *kbuf)
-{
- return kbuf->timestamp;
-}
-
-/**
- * kbuffer_read_at_offset - read the event that is at offset
- * @kbuf: The kbuffer to read from
- * @offset: The offset into the subbuffer
- * @ts: The address to store the timestamp of the event (may be NULL to ignore)
- *
- * The @offset must be an index from the @kbuf subbuffer beginning.
- * If @offset is bigger than the stored subbuffer, NULL will be returned.
- *
- * Returns the data of the record that is at @offset. Note, @offset does
- * not need to be the start of the record, the offset just needs to be
- * in the record (or beginning of it).
- *
- * Note, the kbuf timestamp and pointers are updated to the
- * returned record. That is, kbuffer_read_event() will return the same
- * data and timestamp, and kbuffer_next_event() will increment from
- * this record.
- */
-void *kbuffer_read_at_offset(struct kbuffer *kbuf, int offset,
- unsigned long long *ts)
-{
- void *data;
-
- if (offset < kbuf->start)
- offset = 0;
- else
- offset -= kbuf->start;
-
- /* Reset the buffer */
- kbuffer_load_subbuffer(kbuf, kbuf->subbuffer);
- data = kbuffer_read_event(kbuf, ts);
-
- while (kbuf->curr < offset) {
- data = kbuffer_next_event(kbuf, ts);
- if (!data)
- break;
- }
-
- return data;
-}
-
-/**
- * kbuffer_subbuffer_size - the size of the loaded subbuffer
- * @kbuf: The kbuffer to read from
- *
- * Returns the size of the subbuffer. Note, this size is
- * where the last event resides. The stored subbuffer may actually be
- * bigger due to padding and such.
- */
-int kbuffer_subbuffer_size(struct kbuffer *kbuf)
-{
- return kbuf->size;
-}
-
-/**
- * kbuffer_curr_index - Return the index of the record
- * @kbuf: The kbuffer to read from
- *
- * Returns the index from the start of the data part of
- * the subbuffer to the current location. Note this is not
- * from the start of the subbuffer. An index of zero will
- * point to the first record. Use kbuffer_curr_offset() for
- * the actually offset (that can be used by kbuffer_read_at_offset())
- */
-int kbuffer_curr_index(struct kbuffer *kbuf)
-{
- return kbuf->curr;
-}
-
-/**
- * kbuffer_curr_offset - Return the offset of the record
- * @kbuf: The kbuffer to read from
- *
- * Returns the offset from the start of the subbuffer to the
- * current location.
- */
-int kbuffer_curr_offset(struct kbuffer *kbuf)
-{
- return kbuf->curr + kbuf->start;
-}
-
-/**
- * kbuffer_event_size - return the size of the event data
- * @kbuf: The kbuffer to read
- *
- * Returns the size of the event data (the payload not counting
- * the meta data of the record) of the current event.
- */
-int kbuffer_event_size(struct kbuffer *kbuf)
-{
- return kbuf->next - kbuf->index;
-}
-
-/**
- * kbuffer_curr_size - return the size of the entire record
- * @kbuf: The kbuffer to read
- *
- * Returns the size of the entire record (meta data and payload)
- * of the current event.
- */
-int kbuffer_curr_size(struct kbuffer *kbuf)
-{
- return kbuf->next - kbuf->curr;
-}
-
-/**
- * kbuffer_missed_events - return the # of missed events from last event.
- * @kbuf: The kbuffer to read from
- *
- * Returns the # of missed events (if recorded) before the current
- * event. Note, only events on the beginning of a subbuffer can
- * have missed events, all other events within the buffer will be
- * zero.
- */
-int kbuffer_missed_events(struct kbuffer *kbuf)
-{
- /* Only the first event can have missed events */
- if (kbuf->curr)
- return 0;
-
- return kbuf->lost_events;
-}
-
-/**
- * kbuffer_set_old_forma - set the kbuffer to use the old format parsing
- * @kbuf: The kbuffer to set
- *
- * This is obsolete (or should be). The first kernels to use the
- * new ring buffer had a slightly different ring buffer format
- * (2.6.30 and earlier). It is still somewhat supported by kbuffer,
- * but should not be counted on in the future.
- */
-void kbuffer_set_old_format(struct kbuffer *kbuf)
-{
- kbuf->flags |= KBUFFER_FL_OLD_FORMAT;
-
- kbuf->next_event = __old_next_event;
-}
-
-/**
- * kbuffer_start_of_data - return offset of where data starts on subbuffer
- * @kbuf: The kbuffer
- *
- * Returns the location on the subbuffer where the data starts.
- */
-int kbuffer_start_of_data(struct kbuffer *kbuf)
-{
- return kbuf->start;
-}
-
-/**
- * kbuffer_raw_get - get raw buffer info
- * @kbuf: The kbuffer
- * @subbuf: Start of mapped subbuffer
- * @info: Info descriptor to fill in
- *
- * For debugging. This can return internals of the ring buffer.
- * Expects to have info->next set to what it will read.
- * The type, length and timestamp delta will be filled in, and
- * @info->next will be updated to the next element.
- * The @subbuf is used to know if the info is passed the end of
- * data and NULL will be returned if it is.
- */
-struct kbuffer_raw_info *
-kbuffer_raw_get(struct kbuffer *kbuf, void *subbuf, struct kbuffer_raw_info *info)
-{
- unsigned long long flags;
- unsigned long long delta;
- unsigned int type_len;
- unsigned int size;
- int start;
- int length;
- void *ptr = info->next;
-
- if (!kbuf || !subbuf)
- return NULL;
-
- if (kbuf->flags & KBUFFER_FL_LONG_8)
- start = 16;
- else
- start = 12;
-
- flags = read_long(kbuf, subbuf + 8);
- size = (unsigned int)flags & COMMIT_MASK;
-
- if (ptr < subbuf || ptr >= subbuf + start + size)
- return NULL;
-
- type_len = translate_data(kbuf, ptr, &ptr, &delta, &length);
-
- info->next = ptr + length;
-
- info->type = type_len;
- info->delta = delta;
- info->length = length;
-
- return info;
-}
+++ /dev/null
-/* SPDX-License-Identifier: LGPL-2.1 */
-/*
- * Copyright (C) 2012 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
- *
- */
-#ifndef _KBUFFER_H
-#define _KBUFFER_H
-
-#ifndef TS_SHIFT
-#define TS_SHIFT 27
-#endif
-
-enum kbuffer_endian {
- KBUFFER_ENDIAN_BIG,
- KBUFFER_ENDIAN_LITTLE,
-};
-
-enum kbuffer_long_size {
- KBUFFER_LSIZE_4,
- KBUFFER_LSIZE_8,
-};
-
-enum {
- KBUFFER_TYPE_PADDING = 29,
- KBUFFER_TYPE_TIME_EXTEND = 30,
- KBUFFER_TYPE_TIME_STAMP = 31,
-};
-
-struct kbuffer;
-
-struct kbuffer *kbuffer_alloc(enum kbuffer_long_size size, enum kbuffer_endian endian);
-void kbuffer_free(struct kbuffer *kbuf);
-int kbuffer_load_subbuffer(struct kbuffer *kbuf, void *subbuffer);
-void *kbuffer_read_event(struct kbuffer *kbuf, unsigned long long *ts);
-void *kbuffer_next_event(struct kbuffer *kbuf, unsigned long long *ts);
-unsigned long long kbuffer_timestamp(struct kbuffer *kbuf);
-unsigned long long kbuffer_subbuf_timestamp(struct kbuffer *kbuf, void *subbuf);
-unsigned int kbuffer_ptr_delta(struct kbuffer *kbuf, void *ptr);
-
-void *kbuffer_translate_data(int swap, void *data, unsigned int *size);
-
-void *kbuffer_read_at_offset(struct kbuffer *kbuf, int offset, unsigned long long *ts);
-
-int kbuffer_curr_index(struct kbuffer *kbuf);
-
-int kbuffer_curr_offset(struct kbuffer *kbuf);
-int kbuffer_curr_size(struct kbuffer *kbuf);
-int kbuffer_event_size(struct kbuffer *kbuf);
-int kbuffer_missed_events(struct kbuffer *kbuf);
-int kbuffer_subbuffer_size(struct kbuffer *kbuf);
-
-void kbuffer_set_old_format(struct kbuffer *kbuf);
-int kbuffer_start_of_data(struct kbuffer *kbuf);
-
-/* Debugging */
-
-struct kbuffer_raw_info {
- int type;
- int length;
- unsigned long long delta;
- void *next;
-};
-
-/* Read raw data */
-struct kbuffer_raw_info *kbuffer_raw_get(struct kbuffer *kbuf, void *subbuf,
- struct kbuffer_raw_info *info);
-
-#endif /* _K_BUFFER_H */
+++ /dev/null
-prefix=INSTALL_PREFIX
-libdir=LIB_DIR
-includedir=HEADER_DIR
-
-Name: libtraceevent
-URL: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
-Description: Linux kernel trace event library
-Version: LIB_VERSION
-Cflags: -I${includedir}
-Libs: -L${libdir} -ltraceevent
+++ /dev/null
-// SPDX-License-Identifier: LGPL-2.1
-/*
- * Copyright (C) 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
- *
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdarg.h>
-#include <errno.h>
-#include <sys/types.h>
-
-#include "event-parse.h"
-#include "event-parse-local.h"
-#include "event-utils.h"
-
-#define COMM "COMM"
-#define CPU "CPU"
-
-static struct tep_format_field comm = {
- .name = "COMM",
-};
-
-static struct tep_format_field cpu = {
- .name = "CPU",
-};
-
-struct event_list {
- struct event_list *next;
- struct tep_event *event;
-};
-
-static void show_error(char *error_buf, const char *fmt, ...)
-{
- unsigned long long index;
- const char *input;
- va_list ap;
- int len;
- int i;
-
- input = get_input_buf();
- index = get_input_buf_ptr();
- len = input ? strlen(input) : 0;
-
- if (len) {
- strcpy(error_buf, input);
- error_buf[len] = '\n';
- for (i = 1; i < len && i < index; i++)
- error_buf[len+i] = ' ';
- error_buf[len + i] = '^';
- error_buf[len + i + 1] = '\n';
- len += i+2;
- }
-
- va_start(ap, fmt);
- vsnprintf(error_buf + len, TEP_FILTER_ERROR_BUFSZ - len, fmt, ap);
- va_end(ap);
-}
-
-static enum tep_event_type filter_read_token(char **tok)
-{
- enum tep_event_type type;
- char *token = NULL;
-
- do {
- free_token(token);
- type = read_token(&token);
- } while (type == TEP_EVENT_NEWLINE || type == TEP_EVENT_SPACE);
-
- /* If token is = or ! check to see if the next char is ~ */
- if (token &&
- (strcmp(token, "=") == 0 || strcmp(token, "!") == 0) &&
- peek_char() == '~') {
- /* append it */
- *tok = malloc(3);
- if (*tok == NULL) {
- free_token(token);
- return TEP_EVENT_ERROR;
- }
- sprintf(*tok, "%c%c", *token, '~');
- free_token(token);
- /* Now remove the '~' from the buffer */
- read_token(&token);
- free_token(token);
- } else
- *tok = token;
-
- return type;
-}
-
-static int filter_cmp(const void *a, const void *b)
-{
- const struct tep_filter_type *ea = a;
- const struct tep_filter_type *eb = b;
-
- if (ea->event_id < eb->event_id)
- return -1;
-
- if (ea->event_id > eb->event_id)
- return 1;
-
- return 0;
-}
-
-static struct tep_filter_type *
-find_filter_type(struct tep_event_filter *filter, int id)
-{
- struct tep_filter_type *filter_type;
- struct tep_filter_type key;
-
- key.event_id = id;
-
- filter_type = bsearch(&key, filter->event_filters,
- filter->filters,
- sizeof(*filter->event_filters),
- filter_cmp);
-
- return filter_type;
-}
-
-static struct tep_filter_type *
-add_filter_type(struct tep_event_filter *filter, int id)
-{
- struct tep_filter_type *filter_type;
- int i;
-
- filter_type = find_filter_type(filter, id);
- if (filter_type)
- return filter_type;
-
- filter_type = realloc(filter->event_filters,
- sizeof(*filter->event_filters) *
- (filter->filters + 1));
- if (!filter_type)
- return NULL;
-
- filter->event_filters = filter_type;
-
- for (i = 0; i < filter->filters; i++) {
- if (filter->event_filters[i].event_id > id)
- break;
- }
-
- if (i < filter->filters)
- memmove(&filter->event_filters[i+1],
- &filter->event_filters[i],
- sizeof(*filter->event_filters) *
- (filter->filters - i));
-
- filter_type = &filter->event_filters[i];
- filter_type->event_id = id;
- filter_type->event = tep_find_event(filter->tep, id);
- filter_type->filter = NULL;
-
- filter->filters++;
-
- return filter_type;
-}
-
-/**
- * tep_filter_alloc - create a new event filter
- * @tep: The tep that this filter is associated with
- */
-struct tep_event_filter *tep_filter_alloc(struct tep_handle *tep)
-{
- struct tep_event_filter *filter;
-
- filter = malloc(sizeof(*filter));
- if (filter == NULL)
- return NULL;
-
- memset(filter, 0, sizeof(*filter));
- filter->tep = tep;
- tep_ref(tep);
-
- return filter;
-}
-
-static struct tep_filter_arg *allocate_arg(void)
-{
- return calloc(1, sizeof(struct tep_filter_arg));
-}
-
-static void free_arg(struct tep_filter_arg *arg)
-{
- if (!arg)
- return;
-
- switch (arg->type) {
- case TEP_FILTER_ARG_NONE:
- case TEP_FILTER_ARG_BOOLEAN:
- break;
-
- case TEP_FILTER_ARG_NUM:
- free_arg(arg->num.left);
- free_arg(arg->num.right);
- break;
-
- case TEP_FILTER_ARG_EXP:
- free_arg(arg->exp.left);
- free_arg(arg->exp.right);
- break;
-
- case TEP_FILTER_ARG_STR:
- free(arg->str.val);
- regfree(&arg->str.reg);
- free(arg->str.buffer);
- break;
-
- case TEP_FILTER_ARG_VALUE:
- if (arg->value.type == TEP_FILTER_STRING ||
- arg->value.type == TEP_FILTER_CHAR)
- free(arg->value.str);
- break;
-
- case TEP_FILTER_ARG_OP:
- free_arg(arg->op.left);
- free_arg(arg->op.right);
- default:
- break;
- }
-
- free(arg);
-}
-
-static int add_event(struct event_list **events,
- struct tep_event *event)
-{
- struct event_list *list;
-
- list = malloc(sizeof(*list));
- if (list == NULL)
- return -1;
-
- list->next = *events;
- *events = list;
- list->event = event;
- return 0;
-}
-
-static int event_match(struct tep_event *event,
- regex_t *sreg, regex_t *ereg)
-{
- if (sreg) {
- return !regexec(sreg, event->system, 0, NULL, 0) &&
- !regexec(ereg, event->name, 0, NULL, 0);
- }
-
- return !regexec(ereg, event->system, 0, NULL, 0) ||
- !regexec(ereg, event->name, 0, NULL, 0);
-}
-
-static enum tep_errno
-find_event(struct tep_handle *tep, struct event_list **events,
- char *sys_name, char *event_name)
-{
- struct tep_event *event;
- regex_t ereg;
- regex_t sreg;
- int match = 0;
- int fail = 0;
- char *reg;
- int ret;
- int i;
-
- if (!event_name) {
- /* if no name is given, then swap sys and name */
- event_name = sys_name;
- sys_name = NULL;
- }
-
- ret = asprintf(®, "^%s$", event_name);
- if (ret < 0)
- return TEP_ERRNO__MEM_ALLOC_FAILED;
-
- ret = regcomp(&ereg, reg, REG_ICASE|REG_NOSUB);
- free(reg);
-
- if (ret)
- return TEP_ERRNO__INVALID_EVENT_NAME;
-
- if (sys_name) {
- ret = asprintf(®, "^%s$", sys_name);
- if (ret < 0) {
- regfree(&ereg);
- return TEP_ERRNO__MEM_ALLOC_FAILED;
- }
-
- ret = regcomp(&sreg, reg, REG_ICASE|REG_NOSUB);
- free(reg);
- if (ret) {
- regfree(&ereg);
- return TEP_ERRNO__INVALID_EVENT_NAME;
- }
- }
-
- for (i = 0; i < tep->nr_events; i++) {
- event = tep->events[i];
- if (event_match(event, sys_name ? &sreg : NULL, &ereg)) {
- match = 1;
- if (add_event(events, event) < 0) {
- fail = 1;
- break;
- }
- }
- }
-
- regfree(&ereg);
- if (sys_name)
- regfree(&sreg);
-
- if (!match)
- return TEP_ERRNO__EVENT_NOT_FOUND;
- if (fail)
- return TEP_ERRNO__MEM_ALLOC_FAILED;
-
- return 0;
-}
-
-static void free_events(struct event_list *events)
-{
- struct event_list *event;
-
- while (events) {
- event = events;
- events = events->next;
- free(event);
- }
-}
-
-static enum tep_errno
-create_arg_item(struct tep_event *event, const char *token,
- enum tep_event_type type, struct tep_filter_arg **parg, char *error_str)
-{
- struct tep_format_field *field;
- struct tep_filter_arg *arg;
-
- arg = allocate_arg();
- if (arg == NULL) {
- show_error(error_str, "failed to allocate filter arg");
- return TEP_ERRNO__MEM_ALLOC_FAILED;
- }
-
- switch (type) {
-
- case TEP_EVENT_SQUOTE:
- case TEP_EVENT_DQUOTE:
- arg->type = TEP_FILTER_ARG_VALUE;
- arg->value.type =
- type == TEP_EVENT_DQUOTE ? TEP_FILTER_STRING : TEP_FILTER_CHAR;
- arg->value.str = strdup(token);
- if (!arg->value.str) {
- free_arg(arg);
- show_error(error_str, "failed to allocate string filter arg");
- return TEP_ERRNO__MEM_ALLOC_FAILED;
- }
- break;
- case TEP_EVENT_ITEM:
- /* if it is a number, then convert it */
- if (isdigit(token[0])) {
- arg->type = TEP_FILTER_ARG_VALUE;
- arg->value.type = TEP_FILTER_NUMBER;
- arg->value.val = strtoull(token, NULL, 0);
- break;
- }
- /* Consider this a field */
- field = tep_find_any_field(event, token);
- if (!field) {
- /* If token is 'COMM' or 'CPU' then it is special */
- if (strcmp(token, COMM) == 0) {
- field = &comm;
- } else if (strcmp(token, CPU) == 0) {
- field = &cpu;
- } else {
- /* not a field, Make it false */
- arg->type = TEP_FILTER_ARG_BOOLEAN;
- arg->boolean.value = TEP_FILTER_FALSE;
- break;
- }
- }
- arg->type = TEP_FILTER_ARG_FIELD;
- arg->field.field = field;
- break;
- default:
- free_arg(arg);
- show_error(error_str, "expected a value but found %s", token);
- return TEP_ERRNO__UNEXPECTED_TYPE;
- }
- *parg = arg;
- return 0;
-}
-
-static struct tep_filter_arg *
-create_arg_op(enum tep_filter_op_type btype)
-{
- struct tep_filter_arg *arg;
-
- arg = allocate_arg();
- if (!arg)
- return NULL;
-
- arg->type = TEP_FILTER_ARG_OP;
- arg->op.type = btype;
-
- return arg;
-}
-
-static struct tep_filter_arg *
-create_arg_exp(enum tep_filter_exp_type etype)
-{
- struct tep_filter_arg *arg;
-
- arg = allocate_arg();
- if (!arg)
- return NULL;
-
- arg->type = TEP_FILTER_ARG_EXP;
- arg->exp.type = etype;
-
- return arg;
-}
-
-static struct tep_filter_arg *
-create_arg_cmp(enum tep_filter_cmp_type ctype)
-{
- struct tep_filter_arg *arg;
-
- arg = allocate_arg();
- if (!arg)
- return NULL;
-
- /* Use NUM and change if necessary */
- arg->type = TEP_FILTER_ARG_NUM;
- arg->num.type = ctype;
-
- return arg;
-}
-
-static enum tep_errno
-add_right(struct tep_filter_arg *op, struct tep_filter_arg *arg, char *error_str)
-{
- struct tep_filter_arg *left;
- char *str;
- int op_type;
- int ret;
-
- switch (op->type) {
- case TEP_FILTER_ARG_EXP:
- if (op->exp.right)
- goto out_fail;
- op->exp.right = arg;
- break;
-
- case TEP_FILTER_ARG_OP:
- if (op->op.right)
- goto out_fail;
- op->op.right = arg;
- break;
-
- case TEP_FILTER_ARG_NUM:
- if (op->op.right)
- goto out_fail;
- /*
- * The arg must be num, str, or field
- */
- switch (arg->type) {
- case TEP_FILTER_ARG_VALUE:
- case TEP_FILTER_ARG_FIELD:
- break;
- default:
- show_error(error_str, "Illegal rvalue");
- return TEP_ERRNO__ILLEGAL_RVALUE;
- }
-
- /*
- * Depending on the type, we may need to
- * convert this to a string or regex.
- */
- switch (arg->value.type) {
- case TEP_FILTER_CHAR:
- /*
- * A char should be converted to number if
- * the string is 1 byte, and the compare
- * is not a REGEX.
- */
- if (strlen(arg->value.str) == 1 &&
- op->num.type != TEP_FILTER_CMP_REGEX &&
- op->num.type != TEP_FILTER_CMP_NOT_REGEX) {
- arg->value.type = TEP_FILTER_NUMBER;
- goto do_int;
- }
- /* fall through */
- case TEP_FILTER_STRING:
-
- /* convert op to a string arg */
- op_type = op->num.type;
- left = op->num.left;
- str = arg->value.str;
-
- /* reset the op for the new field */
- memset(op, 0, sizeof(*op));
-
- /*
- * If left arg was a field not found then
- * NULL the entire op.
- */
- if (left->type == TEP_FILTER_ARG_BOOLEAN) {
- free_arg(left);
- free_arg(arg);
- op->type = TEP_FILTER_ARG_BOOLEAN;
- op->boolean.value = TEP_FILTER_FALSE;
- break;
- }
-
- /* Left arg must be a field */
- if (left->type != TEP_FILTER_ARG_FIELD) {
- show_error(error_str,
- "Illegal lvalue for string comparison");
- return TEP_ERRNO__ILLEGAL_LVALUE;
- }
-
- /* Make sure this is a valid string compare */
- switch (op_type) {
- case TEP_FILTER_CMP_EQ:
- op_type = TEP_FILTER_CMP_MATCH;
- break;
- case TEP_FILTER_CMP_NE:
- op_type = TEP_FILTER_CMP_NOT_MATCH;
- break;
-
- case TEP_FILTER_CMP_REGEX:
- case TEP_FILTER_CMP_NOT_REGEX:
- ret = regcomp(&op->str.reg, str, REG_ICASE|REG_NOSUB);
- if (ret) {
- show_error(error_str,
- "RegEx '%s' did not compute",
- str);
- return TEP_ERRNO__INVALID_REGEX;
- }
- break;
- default:
- show_error(error_str,
- "Illegal comparison for string");
- return TEP_ERRNO__ILLEGAL_STRING_CMP;
- }
-
- op->type = TEP_FILTER_ARG_STR;
- op->str.type = op_type;
- op->str.field = left->field.field;
- op->str.val = strdup(str);
- if (!op->str.val) {
- show_error(error_str, "Failed to allocate string filter");
- return TEP_ERRNO__MEM_ALLOC_FAILED;
- }
- /*
- * Need a buffer to copy data for tests
- */
- op->str.buffer = malloc(op->str.field->size + 1);
- if (!op->str.buffer) {
- show_error(error_str, "Failed to allocate string filter");
- return TEP_ERRNO__MEM_ALLOC_FAILED;
- }
- /* Null terminate this buffer */
- op->str.buffer[op->str.field->size] = 0;
-
- /* We no longer have left or right args */
- free_arg(arg);
- free_arg(left);
-
- break;
-
- case TEP_FILTER_NUMBER:
-
- do_int:
- switch (op->num.type) {
- case TEP_FILTER_CMP_REGEX:
- case TEP_FILTER_CMP_NOT_REGEX:
- show_error(error_str,
- "Op not allowed with integers");
- return TEP_ERRNO__ILLEGAL_INTEGER_CMP;
-
- default:
- break;
- }
-
- /* numeric compare */
- op->num.right = arg;
- break;
- default:
- goto out_fail;
- }
- break;
- default:
- goto out_fail;
- }
-
- return 0;
-
- out_fail:
- show_error(error_str, "Syntax error");
- return TEP_ERRNO__SYNTAX_ERROR;
-}
-
-static struct tep_filter_arg *
-rotate_op_right(struct tep_filter_arg *a, struct tep_filter_arg *b)
-{
- struct tep_filter_arg *arg;
-
- arg = a->op.right;
- a->op.right = b;
- return arg;
-}
-
-static enum tep_errno add_left(struct tep_filter_arg *op, struct tep_filter_arg *arg)
-{
- switch (op->type) {
- case TEP_FILTER_ARG_EXP:
- if (arg->type == TEP_FILTER_ARG_OP)
- arg = rotate_op_right(arg, op);
- op->exp.left = arg;
- break;
-
- case TEP_FILTER_ARG_OP:
- op->op.left = arg;
- break;
- case TEP_FILTER_ARG_NUM:
- if (arg->type == TEP_FILTER_ARG_OP)
- arg = rotate_op_right(arg, op);
-
- /* left arg of compares must be a field */
- if (arg->type != TEP_FILTER_ARG_FIELD &&
- arg->type != TEP_FILTER_ARG_BOOLEAN)
- return TEP_ERRNO__INVALID_ARG_TYPE;
- op->num.left = arg;
- break;
- default:
- return TEP_ERRNO__INVALID_ARG_TYPE;
- }
- return 0;
-}
-
-enum op_type {
- OP_NONE,
- OP_BOOL,
- OP_NOT,
- OP_EXP,
- OP_CMP,
-};
-
-static enum op_type process_op(const char *token,
- enum tep_filter_op_type *btype,
- enum tep_filter_cmp_type *ctype,
- enum tep_filter_exp_type *etype)
-{
- *btype = TEP_FILTER_OP_NOT;
- *etype = TEP_FILTER_EXP_NONE;
- *ctype = TEP_FILTER_CMP_NONE;
-
- if (strcmp(token, "&&") == 0)
- *btype = TEP_FILTER_OP_AND;
- else if (strcmp(token, "||") == 0)
- *btype = TEP_FILTER_OP_OR;
- else if (strcmp(token, "!") == 0)
- return OP_NOT;
-
- if (*btype != TEP_FILTER_OP_NOT)
- return OP_BOOL;
-
- /* Check for value expressions */
- if (strcmp(token, "+") == 0) {
- *etype = TEP_FILTER_EXP_ADD;
- } else if (strcmp(token, "-") == 0) {
- *etype = TEP_FILTER_EXP_SUB;
- } else if (strcmp(token, "*") == 0) {
- *etype = TEP_FILTER_EXP_MUL;
- } else if (strcmp(token, "/") == 0) {
- *etype = TEP_FILTER_EXP_DIV;
- } else if (strcmp(token, "%") == 0) {
- *etype = TEP_FILTER_EXP_MOD;
- } else if (strcmp(token, ">>") == 0) {
- *etype = TEP_FILTER_EXP_RSHIFT;
- } else if (strcmp(token, "<<") == 0) {
- *etype = TEP_FILTER_EXP_LSHIFT;
- } else if (strcmp(token, "&") == 0) {
- *etype = TEP_FILTER_EXP_AND;
- } else if (strcmp(token, "|") == 0) {
- *etype = TEP_FILTER_EXP_OR;
- } else if (strcmp(token, "^") == 0) {
- *etype = TEP_FILTER_EXP_XOR;
- } else if (strcmp(token, "~") == 0)
- *etype = TEP_FILTER_EXP_NOT;
-
- if (*etype != TEP_FILTER_EXP_NONE)
- return OP_EXP;
-
- /* Check for compares */
- if (strcmp(token, "==") == 0)
- *ctype = TEP_FILTER_CMP_EQ;
- else if (strcmp(token, "!=") == 0)
- *ctype = TEP_FILTER_CMP_NE;
- else if (strcmp(token, "<") == 0)
- *ctype = TEP_FILTER_CMP_LT;
- else if (strcmp(token, ">") == 0)
- *ctype = TEP_FILTER_CMP_GT;
- else if (strcmp(token, "<=") == 0)
- *ctype = TEP_FILTER_CMP_LE;
- else if (strcmp(token, ">=") == 0)
- *ctype = TEP_FILTER_CMP_GE;
- else if (strcmp(token, "=~") == 0)
- *ctype = TEP_FILTER_CMP_REGEX;
- else if (strcmp(token, "!~") == 0)
- *ctype = TEP_FILTER_CMP_NOT_REGEX;
- else
- return OP_NONE;
-
- return OP_CMP;
-}
-
-static int check_op_done(struct tep_filter_arg *arg)
-{
- switch (arg->type) {
- case TEP_FILTER_ARG_EXP:
- return arg->exp.right != NULL;
-
- case TEP_FILTER_ARG_OP:
- return arg->op.right != NULL;
-
- case TEP_FILTER_ARG_NUM:
- return arg->num.right != NULL;
-
- case TEP_FILTER_ARG_STR:
- /* A string conversion is always done */
- return 1;
-
- case TEP_FILTER_ARG_BOOLEAN:
- /* field not found, is ok */
- return 1;
-
- default:
- return 0;
- }
-}
-
-enum filter_vals {
- FILTER_VAL_NORM,
- FILTER_VAL_FALSE,
- FILTER_VAL_TRUE,
-};
-
-static enum tep_errno
-reparent_op_arg(struct tep_filter_arg *parent, struct tep_filter_arg *old_child,
- struct tep_filter_arg *arg, char *error_str)
-{
- struct tep_filter_arg *other_child;
- struct tep_filter_arg **ptr;
-
- if (parent->type != TEP_FILTER_ARG_OP &&
- arg->type != TEP_FILTER_ARG_OP) {
- show_error(error_str, "can not reparent other than OP");
- return TEP_ERRNO__REPARENT_NOT_OP;
- }
-
- /* Get the sibling */
- if (old_child->op.right == arg) {
- ptr = &old_child->op.right;
- other_child = old_child->op.left;
- } else if (old_child->op.left == arg) {
- ptr = &old_child->op.left;
- other_child = old_child->op.right;
- } else {
- show_error(error_str, "Error in reparent op, find other child");
- return TEP_ERRNO__REPARENT_FAILED;
- }
-
- /* Detach arg from old_child */
- *ptr = NULL;
-
- /* Check for root */
- if (parent == old_child) {
- free_arg(other_child);
- *parent = *arg;
- /* Free arg without recussion */
- free(arg);
- return 0;
- }
-
- if (parent->op.right == old_child)
- ptr = &parent->op.right;
- else if (parent->op.left == old_child)
- ptr = &parent->op.left;
- else {
- show_error(error_str, "Error in reparent op");
- return TEP_ERRNO__REPARENT_FAILED;
- }
-
- *ptr = arg;
-
- free_arg(old_child);
- return 0;
-}
-
-/* Returns either filter_vals (success) or tep_errno (failfure) */
-static int test_arg(struct tep_filter_arg *parent, struct tep_filter_arg *arg,
- char *error_str)
-{
- int lval, rval;
-
- switch (arg->type) {
-
- /* bad case */
- case TEP_FILTER_ARG_BOOLEAN:
- return FILTER_VAL_FALSE + arg->boolean.value;
-
- /* good cases: */
- case TEP_FILTER_ARG_STR:
- case TEP_FILTER_ARG_VALUE:
- case TEP_FILTER_ARG_FIELD:
- return FILTER_VAL_NORM;
-
- case TEP_FILTER_ARG_EXP:
- lval = test_arg(arg, arg->exp.left, error_str);
- if (lval != FILTER_VAL_NORM)
- return lval;
- rval = test_arg(arg, arg->exp.right, error_str);
- if (rval != FILTER_VAL_NORM)
- return rval;
- return FILTER_VAL_NORM;
-
- case TEP_FILTER_ARG_NUM:
- lval = test_arg(arg, arg->num.left, error_str);
- if (lval != FILTER_VAL_NORM)
- return lval;
- rval = test_arg(arg, arg->num.right, error_str);
- if (rval != FILTER_VAL_NORM)
- return rval;
- return FILTER_VAL_NORM;
-
- case TEP_FILTER_ARG_OP:
- if (arg->op.type != TEP_FILTER_OP_NOT) {
- lval = test_arg(arg, arg->op.left, error_str);
- switch (lval) {
- case FILTER_VAL_NORM:
- break;
- case FILTER_VAL_TRUE:
- if (arg->op.type == TEP_FILTER_OP_OR)
- return FILTER_VAL_TRUE;
- rval = test_arg(arg, arg->op.right, error_str);
- if (rval != FILTER_VAL_NORM)
- return rval;
-
- return reparent_op_arg(parent, arg, arg->op.right,
- error_str);
-
- case FILTER_VAL_FALSE:
- if (arg->op.type == TEP_FILTER_OP_AND)
- return FILTER_VAL_FALSE;
- rval = test_arg(arg, arg->op.right, error_str);
- if (rval != FILTER_VAL_NORM)
- return rval;
-
- return reparent_op_arg(parent, arg, arg->op.right,
- error_str);
-
- default:
- return lval;
- }
- }
-
- rval = test_arg(arg, arg->op.right, error_str);
- switch (rval) {
- case FILTER_VAL_NORM:
- default:
- break;
-
- case FILTER_VAL_TRUE:
- if (arg->op.type == TEP_FILTER_OP_OR)
- return FILTER_VAL_TRUE;
- if (arg->op.type == TEP_FILTER_OP_NOT)
- return FILTER_VAL_FALSE;
-
- return reparent_op_arg(parent, arg, arg->op.left,
- error_str);
-
- case FILTER_VAL_FALSE:
- if (arg->op.type == TEP_FILTER_OP_AND)
- return FILTER_VAL_FALSE;
- if (arg->op.type == TEP_FILTER_OP_NOT)
- return FILTER_VAL_TRUE;
-
- return reparent_op_arg(parent, arg, arg->op.left,
- error_str);
- }
-
- return rval;
- default:
- show_error(error_str, "bad arg in filter tree");
- return TEP_ERRNO__BAD_FILTER_ARG;
- }
- return FILTER_VAL_NORM;
-}
-
-/* Remove any unknown event fields */
-static int collapse_tree(struct tep_filter_arg *arg,
- struct tep_filter_arg **arg_collapsed, char *error_str)
-{
- int ret;
-
- ret = test_arg(arg, arg, error_str);
- switch (ret) {
- case FILTER_VAL_NORM:
- break;
-
- case FILTER_VAL_TRUE:
- case FILTER_VAL_FALSE:
- free_arg(arg);
- arg = allocate_arg();
- if (arg) {
- arg->type = TEP_FILTER_ARG_BOOLEAN;
- arg->boolean.value = ret == FILTER_VAL_TRUE;
- } else {
- show_error(error_str, "Failed to allocate filter arg");
- ret = TEP_ERRNO__MEM_ALLOC_FAILED;
- }
- break;
-
- default:
- /* test_arg() already set the error_str */
- free_arg(arg);
- arg = NULL;
- break;
- }
-
- *arg_collapsed = arg;
- return ret;
-}
-
-static enum tep_errno
-process_filter(struct tep_event *event, struct tep_filter_arg **parg,
- char *error_str, int not)
-{
- enum tep_event_type type;
- char *token = NULL;
- struct tep_filter_arg *current_op = NULL;
- struct tep_filter_arg *current_exp = NULL;
- struct tep_filter_arg *left_item = NULL;
- struct tep_filter_arg *arg = NULL;
- enum op_type op_type;
- enum tep_filter_op_type btype;
- enum tep_filter_exp_type etype;
- enum tep_filter_cmp_type ctype;
- enum tep_errno ret;
-
- *parg = NULL;
-
- do {
- free(token);
- type = filter_read_token(&token);
- switch (type) {
- case TEP_EVENT_SQUOTE:
- case TEP_EVENT_DQUOTE:
- case TEP_EVENT_ITEM:
- ret = create_arg_item(event, token, type, &arg, error_str);
- if (ret < 0)
- goto fail;
- if (!left_item)
- left_item = arg;
- else if (current_exp) {
- ret = add_right(current_exp, arg, error_str);
- if (ret < 0)
- goto fail;
- left_item = NULL;
- /* Not's only one one expression */
- if (not) {
- arg = NULL;
- if (current_op)
- goto fail_syntax;
- free(token);
- *parg = current_exp;
- return 0;
- }
- } else
- goto fail_syntax;
- arg = NULL;
- break;
-
- case TEP_EVENT_DELIM:
- if (*token == ',') {
- show_error(error_str, "Illegal token ','");
- ret = TEP_ERRNO__ILLEGAL_TOKEN;
- goto fail;
- }
-
- if (*token == '(') {
- if (left_item) {
- show_error(error_str,
- "Open paren can not come after item");
- ret = TEP_ERRNO__INVALID_PAREN;
- goto fail;
- }
- if (current_exp) {
- show_error(error_str,
- "Open paren can not come after expression");
- ret = TEP_ERRNO__INVALID_PAREN;
- goto fail;
- }
-
- ret = process_filter(event, &arg, error_str, 0);
- if (ret != TEP_ERRNO__UNBALANCED_PAREN) {
- if (ret == 0) {
- show_error(error_str,
- "Unbalanced number of '('");
- ret = TEP_ERRNO__UNBALANCED_PAREN;
- }
- goto fail;
- }
- ret = 0;
-
- /* A not wants just one expression */
- if (not) {
- if (current_op)
- goto fail_syntax;
- *parg = arg;
- return 0;
- }
-
- if (current_op)
- ret = add_right(current_op, arg, error_str);
- else
- current_exp = arg;
-
- if (ret < 0)
- goto fail;
-
- } else { /* ')' */
- if (!current_op && !current_exp)
- goto fail_syntax;
-
- /* Make sure everything is finished at this level */
- if (current_exp && !check_op_done(current_exp))
- goto fail_syntax;
- if (current_op && !check_op_done(current_op))
- goto fail_syntax;
-
- if (current_op)
- *parg = current_op;
- else
- *parg = current_exp;
- free(token);
- return TEP_ERRNO__UNBALANCED_PAREN;
- }
- break;
-
- case TEP_EVENT_OP:
- op_type = process_op(token, &btype, &ctype, &etype);
-
- /* All expect a left arg except for NOT */
- switch (op_type) {
- case OP_BOOL:
- /* Logic ops need a left expression */
- if (!current_exp && !current_op)
- goto fail_syntax;
- /* fall through */
- case OP_NOT:
- /* logic only processes ops and exp */
- if (left_item)
- goto fail_syntax;
- break;
- case OP_EXP:
- case OP_CMP:
- if (!left_item)
- goto fail_syntax;
- break;
- case OP_NONE:
- show_error(error_str,
- "Unknown op token %s", token);
- ret = TEP_ERRNO__UNKNOWN_TOKEN;
- goto fail;
- }
-
- ret = 0;
- switch (op_type) {
- case OP_BOOL:
- arg = create_arg_op(btype);
- if (arg == NULL)
- goto fail_alloc;
- if (current_op)
- ret = add_left(arg, current_op);
- else
- ret = add_left(arg, current_exp);
- current_op = arg;
- current_exp = NULL;
- break;
-
- case OP_NOT:
- arg = create_arg_op(btype);
- if (arg == NULL)
- goto fail_alloc;
- if (current_op)
- ret = add_right(current_op, arg, error_str);
- if (ret < 0)
- goto fail;
- current_exp = arg;
- ret = process_filter(event, &arg, error_str, 1);
- if (ret < 0)
- goto fail;
- ret = add_right(current_exp, arg, error_str);
- if (ret < 0)
- goto fail;
- break;
-
- case OP_EXP:
- case OP_CMP:
- if (op_type == OP_EXP)
- arg = create_arg_exp(etype);
- else
- arg = create_arg_cmp(ctype);
- if (arg == NULL)
- goto fail_alloc;
-
- if (current_op)
- ret = add_right(current_op, arg, error_str);
- if (ret < 0)
- goto fail;
- ret = add_left(arg, left_item);
- if (ret < 0) {
- arg = NULL;
- goto fail_syntax;
- }
- current_exp = arg;
- break;
- default:
- break;
- }
- arg = NULL;
- if (ret < 0)
- goto fail_syntax;
- break;
- case TEP_EVENT_NONE:
- break;
- case TEP_EVENT_ERROR:
- goto fail_alloc;
- default:
- goto fail_syntax;
- }
- } while (type != TEP_EVENT_NONE);
-
- if (!current_op && !current_exp)
- goto fail_syntax;
-
- if (!current_op)
- current_op = current_exp;
-
- ret = collapse_tree(current_op, parg, error_str);
- /* collapse_tree() may free current_op, and updates parg accordingly */
- current_op = NULL;
- if (ret < 0)
- goto fail;
-
- free(token);
- return 0;
-
- fail_alloc:
- show_error(error_str, "failed to allocate filter arg");
- ret = TEP_ERRNO__MEM_ALLOC_FAILED;
- goto fail;
- fail_syntax:
- show_error(error_str, "Syntax error");
- ret = TEP_ERRNO__SYNTAX_ERROR;
- fail:
- free_arg(current_op);
- free_arg(current_exp);
- free_arg(arg);
- free(token);
- return ret;
-}
-
-static enum tep_errno
-process_event(struct tep_event *event, const char *filter_str,
- struct tep_filter_arg **parg, char *error_str)
-{
- int ret;
-
- init_input_buf(filter_str, strlen(filter_str));
-
- ret = process_filter(event, parg, error_str, 0);
- if (ret < 0)
- return ret;
-
- /* If parg is NULL, then make it into FALSE */
- if (!*parg) {
- *parg = allocate_arg();
- if (*parg == NULL)
- return TEP_ERRNO__MEM_ALLOC_FAILED;
-
- (*parg)->type = TEP_FILTER_ARG_BOOLEAN;
- (*parg)->boolean.value = TEP_FILTER_FALSE;
- }
-
- return 0;
-}
-
-static enum tep_errno
-filter_event(struct tep_event_filter *filter, struct tep_event *event,
- const char *filter_str, char *error_str)
-{
- struct tep_filter_type *filter_type;
- struct tep_filter_arg *arg;
- enum tep_errno ret;
-
- if (filter_str) {
- ret = process_event(event, filter_str, &arg, error_str);
- if (ret < 0)
- return ret;
-
- } else {
- /* just add a TRUE arg */
- arg = allocate_arg();
- if (arg == NULL)
- return TEP_ERRNO__MEM_ALLOC_FAILED;
-
- arg->type = TEP_FILTER_ARG_BOOLEAN;
- arg->boolean.value = TEP_FILTER_TRUE;
- }
-
- filter_type = add_filter_type(filter, event->id);
- if (filter_type == NULL) {
- free_arg(arg);
- return TEP_ERRNO__MEM_ALLOC_FAILED;
- }
-
- if (filter_type->filter)
- free_arg(filter_type->filter);
- filter_type->filter = arg;
-
- return 0;
-}
-
-static void filter_init_error_buf(struct tep_event_filter *filter)
-{
- /* clear buffer to reset show error */
- init_input_buf("", 0);
- filter->error_buffer[0] = '\0';
-}
-
-/**
- * tep_filter_add_filter_str - add a new filter
- * @filter: the event filter to add to
- * @filter_str: the filter string that contains the filter
- *
- * Returns 0 if the filter was successfully added or a
- * negative error code. Use tep_filter_strerror() to see
- * actual error message in case of error.
- */
-enum tep_errno tep_filter_add_filter_str(struct tep_event_filter *filter,
- const char *filter_str)
-{
- struct tep_handle *tep = filter->tep;
- struct event_list *event;
- struct event_list *events = NULL;
- const char *filter_start;
- const char *next_event;
- char *this_event;
- char *event_name = NULL;
- char *sys_name = NULL;
- char *sp;
- enum tep_errno rtn = 0; /* TEP_ERRNO__SUCCESS */
- int len;
- int ret;
-
- filter_init_error_buf(filter);
-
- filter_start = strchr(filter_str, ':');
- if (filter_start)
- len = filter_start - filter_str;
- else
- len = strlen(filter_str);
-
- do {
- next_event = strchr(filter_str, ',');
- if (next_event &&
- (!filter_start || next_event < filter_start))
- len = next_event - filter_str;
- else if (filter_start)
- len = filter_start - filter_str;
- else
- len = strlen(filter_str);
-
- this_event = malloc(len + 1);
- if (this_event == NULL) {
- /* This can only happen when events is NULL, but still */
- free_events(events);
- return TEP_ERRNO__MEM_ALLOC_FAILED;
- }
- memcpy(this_event, filter_str, len);
- this_event[len] = 0;
-
- if (next_event)
- next_event++;
-
- filter_str = next_event;
-
- sys_name = strtok_r(this_event, "/", &sp);
- event_name = strtok_r(NULL, "/", &sp);
-
- if (!sys_name) {
- /* This can only happen when events is NULL, but still */
- free_events(events);
- free(this_event);
- return TEP_ERRNO__FILTER_NOT_FOUND;
- }
-
- /* Find this event */
- ret = find_event(tep, &events, strim(sys_name), strim(event_name));
- if (ret < 0) {
- free_events(events);
- free(this_event);
- return ret;
- }
- free(this_event);
- } while (filter_str);
-
- /* Skip the ':' */
- if (filter_start)
- filter_start++;
-
- /* filter starts here */
- for (event = events; event; event = event->next) {
- ret = filter_event(filter, event->event, filter_start,
- filter->error_buffer);
- /* Failures are returned if a parse error happened */
- if (ret < 0)
- rtn = ret;
-
- if (ret >= 0 && tep->test_filters) {
- char *test;
- test = tep_filter_make_string(filter, event->event->id);
- if (test) {
- printf(" '%s: %s'\n", event->event->name, test);
- free(test);
- }
- }
- }
-
- free_events(events);
-
- return rtn;
-}
-
-static void free_filter_type(struct tep_filter_type *filter_type)
-{
- free_arg(filter_type->filter);
-}
-
-/**
- * tep_filter_strerror - fill error message in a buffer
- * @filter: the event filter contains error
- * @err: the error code
- * @buf: the buffer to be filled in
- * @buflen: the size of the buffer
- *
- * Returns 0 if message was filled successfully, -1 if error
- */
-int tep_filter_strerror(struct tep_event_filter *filter, enum tep_errno err,
- char *buf, size_t buflen)
-{
- if (err <= __TEP_ERRNO__START || err >= __TEP_ERRNO__END)
- return -1;
-
- if (strlen(filter->error_buffer) > 0) {
- size_t len = snprintf(buf, buflen, "%s", filter->error_buffer);
-
- if (len > buflen)
- return -1;
- return 0;
- }
-
- return tep_strerror(filter->tep, err, buf, buflen);
-}
-
-/**
- * tep_filter_remove_event - remove a filter for an event
- * @filter: the event filter to remove from
- * @event_id: the event to remove a filter for
- *
- * Removes the filter saved for an event defined by @event_id
- * from the @filter.
- *
- * Returns 1: if an event was removed
- * 0: if the event was not found
- */
-int tep_filter_remove_event(struct tep_event_filter *filter,
- int event_id)
-{
- struct tep_filter_type *filter_type;
- unsigned long len;
-
- if (!filter->filters)
- return 0;
-
- filter_type = find_filter_type(filter, event_id);
-
- if (!filter_type)
- return 0;
-
- free_filter_type(filter_type);
-
- /* The filter_type points into the event_filters array */
- len = (unsigned long)(filter->event_filters + filter->filters) -
- (unsigned long)(filter_type + 1);
-
- memmove(filter_type, filter_type + 1, len);
- filter->filters--;
-
- memset(&filter->event_filters[filter->filters], 0,
- sizeof(*filter_type));
-
- return 1;
-}
-
-/**
- * tep_filter_reset - clear all filters in a filter
- * @filter: the event filter to reset
- *
- * Removes all filters from a filter and resets it.
- */
-void tep_filter_reset(struct tep_event_filter *filter)
-{
- int i;
-
- for (i = 0; i < filter->filters; i++)
- free_filter_type(&filter->event_filters[i]);
-
- free(filter->event_filters);
- filter->filters = 0;
- filter->event_filters = NULL;
-}
-
-void tep_filter_free(struct tep_event_filter *filter)
-{
- tep_unref(filter->tep);
-
- tep_filter_reset(filter);
-
- free(filter);
-}
-
-static char *arg_to_str(struct tep_event_filter *filter, struct tep_filter_arg *arg);
-
-static int copy_filter_type(struct tep_event_filter *filter,
- struct tep_event_filter *source,
- struct tep_filter_type *filter_type)
-{
- struct tep_filter_arg *arg;
- struct tep_event *event;
- const char *sys;
- const char *name;
- char *str;
-
- /* Can't assume that the tep's are the same */
- sys = filter_type->event->system;
- name = filter_type->event->name;
- event = tep_find_event_by_name(filter->tep, sys, name);
- if (!event)
- return -1;
-
- str = arg_to_str(source, filter_type->filter);
- if (!str)
- return -1;
-
- if (strcmp(str, "TRUE") == 0 || strcmp(str, "FALSE") == 0) {
- /* Add trivial event */
- arg = allocate_arg();
- if (arg == NULL) {
- free(str);
- return -1;
- }
-
- arg->type = TEP_FILTER_ARG_BOOLEAN;
- if (strcmp(str, "TRUE") == 0)
- arg->boolean.value = 1;
- else
- arg->boolean.value = 0;
-
- filter_type = add_filter_type(filter, event->id);
- if (filter_type == NULL) {
- free(str);
- free_arg(arg);
- return -1;
- }
-
- filter_type->filter = arg;
-
- free(str);
- return 0;
- }
-
- filter_event(filter, event, str, NULL);
- free(str);
-
- return 0;
-}
-
-/**
- * tep_filter_copy - copy a filter using another filter
- * @dest - the filter to copy to
- * @source - the filter to copy from
- *
- * Returns 0 on success and -1 if not all filters were copied
- */
-int tep_filter_copy(struct tep_event_filter *dest, struct tep_event_filter *source)
-{
- int ret = 0;
- int i;
-
- tep_filter_reset(dest);
-
- for (i = 0; i < source->filters; i++) {
- if (copy_filter_type(dest, source, &source->event_filters[i]))
- ret = -1;
- }
- return ret;
-}
-
-static int test_filter(struct tep_event *event, struct tep_filter_arg *arg,
- struct tep_record *record, enum tep_errno *err);
-
-static const char *
-get_comm(struct tep_event *event, struct tep_record *record)
-{
- const char *comm;
- int pid;
-
- pid = tep_data_pid(event->tep, record);
- comm = tep_data_comm_from_pid(event->tep, pid);
- return comm;
-}
-
-static unsigned long long
-get_value(struct tep_event *event,
- struct tep_format_field *field, struct tep_record *record)
-{
- unsigned long long val;
-
- /* Handle our dummy "comm" field */
- if (field == &comm) {
- const char *name;
-
- name = get_comm(event, record);
- return (unsigned long)name;
- }
-
- /* Handle our dummy "cpu" field */
- if (field == &cpu)
- return record->cpu;
-
- tep_read_number_field(field, record->data, &val);
-
- if (!(field->flags & TEP_FIELD_IS_SIGNED))
- return val;
-
- switch (field->size) {
- case 1:
- return (char)val;
- case 2:
- return (short)val;
- case 4:
- return (int)val;
- case 8:
- return (long long)val;
- }
- return val;
-}
-
-static unsigned long long
-get_arg_value(struct tep_event *event, struct tep_filter_arg *arg,
- struct tep_record *record, enum tep_errno *err);
-
-static unsigned long long
-get_exp_value(struct tep_event *event, struct tep_filter_arg *arg,
- struct tep_record *record, enum tep_errno *err)
-{
- unsigned long long lval, rval;
-
- lval = get_arg_value(event, arg->exp.left, record, err);
- rval = get_arg_value(event, arg->exp.right, record, err);
-
- if (*err) {
- /*
- * There was an error, no need to process anymore.
- */
- return 0;
- }
-
- switch (arg->exp.type) {
- case TEP_FILTER_EXP_ADD:
- return lval + rval;
-
- case TEP_FILTER_EXP_SUB:
- return lval - rval;
-
- case TEP_FILTER_EXP_MUL:
- return lval * rval;
-
- case TEP_FILTER_EXP_DIV:
- return lval / rval;
-
- case TEP_FILTER_EXP_MOD:
- return lval % rval;
-
- case TEP_FILTER_EXP_RSHIFT:
- return lval >> rval;
-
- case TEP_FILTER_EXP_LSHIFT:
- return lval << rval;
-
- case TEP_FILTER_EXP_AND:
- return lval & rval;
-
- case TEP_FILTER_EXP_OR:
- return lval | rval;
-
- case TEP_FILTER_EXP_XOR:
- return lval ^ rval;
-
- case TEP_FILTER_EXP_NOT:
- default:
- if (!*err)
- *err = TEP_ERRNO__INVALID_EXP_TYPE;
- }
- return 0;
-}
-
-static unsigned long long
-get_arg_value(struct tep_event *event, struct tep_filter_arg *arg,
- struct tep_record *record, enum tep_errno *err)
-{
- switch (arg->type) {
- case TEP_FILTER_ARG_FIELD:
- return get_value(event, arg->field.field, record);
-
- case TEP_FILTER_ARG_VALUE:
- if (arg->value.type != TEP_FILTER_NUMBER) {
- if (!*err)
- *err = TEP_ERRNO__NOT_A_NUMBER;
- }
- return arg->value.val;
-
- case TEP_FILTER_ARG_EXP:
- return get_exp_value(event, arg, record, err);
-
- default:
- if (!*err)
- *err = TEP_ERRNO__INVALID_ARG_TYPE;
- }
- return 0;
-}
-
-static int test_num(struct tep_event *event, struct tep_filter_arg *arg,
- struct tep_record *record, enum tep_errno *err)
-{
- unsigned long long lval, rval;
-
- lval = get_arg_value(event, arg->num.left, record, err);
- rval = get_arg_value(event, arg->num.right, record, err);
-
- if (*err) {
- /*
- * There was an error, no need to process anymore.
- */
- return 0;
- }
-
- switch (arg->num.type) {
- case TEP_FILTER_CMP_EQ:
- return lval == rval;
-
- case TEP_FILTER_CMP_NE:
- return lval != rval;
-
- case TEP_FILTER_CMP_GT:
- return lval > rval;
-
- case TEP_FILTER_CMP_LT:
- return lval < rval;
-
- case TEP_FILTER_CMP_GE:
- return lval >= rval;
-
- case TEP_FILTER_CMP_LE:
- return lval <= rval;
-
- default:
- if (!*err)
- *err = TEP_ERRNO__ILLEGAL_INTEGER_CMP;
- return 0;
- }
-}
-
-static const char *get_field_str(struct tep_filter_arg *arg, struct tep_record *record)
-{
- struct tep_event *event;
- struct tep_handle *tep;
- unsigned long long addr;
- const char *val = NULL;
- unsigned int size;
- char hex[64];
-
- /* If the field is not a string convert it */
- if (arg->str.field->flags & TEP_FIELD_IS_STRING) {
- val = record->data + arg->str.field->offset;
- size = arg->str.field->size;
-
- if (arg->str.field->flags & TEP_FIELD_IS_DYNAMIC) {
- addr = *(unsigned int *)val;
- size = addr >> 16;
- addr &= 0xffff;
- if (arg->str.field->flags & TEP_FIELD_IS_RELATIVE)
- addr += arg->str.field->offset + arg->str.field->size;
- val = record->data + addr;
- }
-
- /*
- * We need to copy the data since we can't be sure the field
- * is null terminated.
- */
- if (*(val + size - 1)) {
- /* copy it */
- memcpy(arg->str.buffer, val, arg->str.field->size);
- /* the buffer is already NULL terminated */
- val = arg->str.buffer;
- }
-
- } else {
- event = arg->str.field->event;
- tep = event->tep;
- addr = get_value(event, arg->str.field, record);
-
- if (arg->str.field->flags & (TEP_FIELD_IS_POINTER | TEP_FIELD_IS_LONG))
- /* convert to a kernel symbol */
- val = tep_find_function(tep, addr);
-
- if (val == NULL) {
- /* just use the hex of the string name */
- snprintf(hex, 64, "0x%llx", addr);
- val = hex;
- }
- }
-
- return val;
-}
-
-static int test_str(struct tep_event *event, struct tep_filter_arg *arg,
- struct tep_record *record, enum tep_errno *err)
-{
- const char *val;
-
- if (arg->str.field == &comm)
- val = get_comm(event, record);
- else
- val = get_field_str(arg, record);
-
- switch (arg->str.type) {
- case TEP_FILTER_CMP_MATCH:
- return strcmp(val, arg->str.val) == 0;
-
- case TEP_FILTER_CMP_NOT_MATCH:
- return strcmp(val, arg->str.val) != 0;
-
- case TEP_FILTER_CMP_REGEX:
- /* Returns zero on match */
- return !regexec(&arg->str.reg, val, 0, NULL, 0);
-
- case TEP_FILTER_CMP_NOT_REGEX:
- return regexec(&arg->str.reg, val, 0, NULL, 0);
-
- default:
- if (!*err)
- *err = TEP_ERRNO__ILLEGAL_STRING_CMP;
- return 0;
- }
-}
-
-static int test_op(struct tep_event *event, struct tep_filter_arg *arg,
- struct tep_record *record, enum tep_errno *err)
-{
- switch (arg->op.type) {
- case TEP_FILTER_OP_AND:
- return test_filter(event, arg->op.left, record, err) &&
- test_filter(event, arg->op.right, record, err);
-
- case TEP_FILTER_OP_OR:
- return test_filter(event, arg->op.left, record, err) ||
- test_filter(event, arg->op.right, record, err);
-
- case TEP_FILTER_OP_NOT:
- return !test_filter(event, arg->op.right, record, err);
-
- default:
- if (!*err)
- *err = TEP_ERRNO__INVALID_OP_TYPE;
- return 0;
- }
-}
-
-static int test_filter(struct tep_event *event, struct tep_filter_arg *arg,
- struct tep_record *record, enum tep_errno *err)
-{
- if (*err) {
- /*
- * There was an error, no need to process anymore.
- */
- return 0;
- }
-
- switch (arg->type) {
- case TEP_FILTER_ARG_BOOLEAN:
- /* easy case */
- return arg->boolean.value;
-
- case TEP_FILTER_ARG_OP:
- return test_op(event, arg, record, err);
-
- case TEP_FILTER_ARG_NUM:
- return test_num(event, arg, record, err);
-
- case TEP_FILTER_ARG_STR:
- return test_str(event, arg, record, err);
-
- case TEP_FILTER_ARG_EXP:
- case TEP_FILTER_ARG_VALUE:
- case TEP_FILTER_ARG_FIELD:
- /*
- * Expressions, fields and values evaluate
- * to true if they return non zero
- */
- return !!get_arg_value(event, arg, record, err);
-
- default:
- if (!*err)
- *err = TEP_ERRNO__INVALID_ARG_TYPE;
- return 0;
- }
-}
-
-/**
- * tep_event_filtered - return true if event has filter
- * @filter: filter struct with filter information
- * @event_id: event id to test if filter exists
- *
- * Returns 1 if filter found for @event_id
- * otherwise 0;
- */
-int tep_event_filtered(struct tep_event_filter *filter, int event_id)
-{
- struct tep_filter_type *filter_type;
-
- if (!filter->filters)
- return 0;
-
- filter_type = find_filter_type(filter, event_id);
-
- return filter_type ? 1 : 0;
-}
-
-/**
- * tep_filter_match - test if a record matches a filter
- * @filter: filter struct with filter information
- * @record: the record to test against the filter
- *
- * Returns: match result or error code (prefixed with TEP_ERRNO__)
- * FILTER_MATCH - filter found for event and @record matches
- * FILTER_MISS - filter found for event and @record does not match
- * FILTER_NOT_FOUND - no filter found for @record's event
- * NO_FILTER - if no filters exist
- * otherwise - error occurred during test
- */
-enum tep_errno tep_filter_match(struct tep_event_filter *filter,
- struct tep_record *record)
-{
- struct tep_handle *tep = filter->tep;
- struct tep_filter_type *filter_type;
- int event_id;
- int ret;
- enum tep_errno err = 0;
-
- filter_init_error_buf(filter);
-
- if (!filter->filters)
- return TEP_ERRNO__NO_FILTER;
-
- event_id = tep_data_type(tep, record);
-
- filter_type = find_filter_type(filter, event_id);
- if (!filter_type)
- return TEP_ERRNO__FILTER_NOT_FOUND;
-
- ret = test_filter(filter_type->event, filter_type->filter, record, &err);
- if (err)
- return err;
-
- return ret ? TEP_ERRNO__FILTER_MATCH : TEP_ERRNO__FILTER_MISS;
-}
-
-static char *op_to_str(struct tep_event_filter *filter, struct tep_filter_arg *arg)
-{
- char *str = NULL;
- char *left = NULL;
- char *right = NULL;
- char *op = NULL;
- int left_val = -1;
- int right_val = -1;
- int val;
-
- switch (arg->op.type) {
- case TEP_FILTER_OP_AND:
- op = "&&";
- /* fall through */
- case TEP_FILTER_OP_OR:
- if (!op)
- op = "||";
-
- left = arg_to_str(filter, arg->op.left);
- right = arg_to_str(filter, arg->op.right);
- if (!left || !right)
- break;
-
- /* Try to consolidate boolean values */
- if (strcmp(left, "TRUE") == 0)
- left_val = 1;
- else if (strcmp(left, "FALSE") == 0)
- left_val = 0;
-
- if (strcmp(right, "TRUE") == 0)
- right_val = 1;
- else if (strcmp(right, "FALSE") == 0)
- right_val = 0;
-
- if (left_val >= 0) {
- if ((arg->op.type == TEP_FILTER_OP_AND && !left_val) ||
- (arg->op.type == TEP_FILTER_OP_OR && left_val)) {
- /* Just return left value */
- str = left;
- left = NULL;
- break;
- }
- if (right_val >= 0) {
- /* just evaluate this. */
- val = 0;
- switch (arg->op.type) {
- case TEP_FILTER_OP_AND:
- val = left_val && right_val;
- break;
- case TEP_FILTER_OP_OR:
- val = left_val || right_val;
- break;
- default:
- break;
- }
- if (asprintf(&str, val ? "TRUE" : "FALSE") < 0)
- str = NULL;
- break;
- }
- }
- if (right_val >= 0) {
- if ((arg->op.type == TEP_FILTER_OP_AND && !right_val) ||
- (arg->op.type == TEP_FILTER_OP_OR && right_val)) {
- /* Just return right value */
- str = right;
- right = NULL;
- break;
- }
- /* The right value is meaningless */
- str = left;
- left = NULL;
- break;
- }
-
- if (asprintf(&str, "(%s) %s (%s)", left, op, right) < 0)
- str = NULL;
- break;
-
- case TEP_FILTER_OP_NOT:
- op = "!";
- right = arg_to_str(filter, arg->op.right);
- if (!right)
- break;
-
- /* See if we can consolidate */
- if (strcmp(right, "TRUE") == 0)
- right_val = 1;
- else if (strcmp(right, "FALSE") == 0)
- right_val = 0;
- if (right_val >= 0) {
- /* just return the opposite */
- if (asprintf(&str, right_val ? "FALSE" : "TRUE") < 0)
- str = NULL;
- break;
- }
- if (asprintf(&str, "%s(%s)", op, right) < 0)
- str = NULL;
- break;
-
- default:
- /* ?? */
- break;
- }
- free(left);
- free(right);
- return str;
-}
-
-static char *val_to_str(struct tep_event_filter *filter, struct tep_filter_arg *arg)
-{
- char *str = NULL;
-
- if (asprintf(&str, "%lld", arg->value.val) < 0)
- str = NULL;
-
- return str;
-}
-
-static char *field_to_str(struct tep_event_filter *filter, struct tep_filter_arg *arg)
-{
- return strdup(arg->field.field->name);
-}
-
-static char *exp_to_str(struct tep_event_filter *filter, struct tep_filter_arg *arg)
-{
- char *lstr;
- char *rstr;
- char *op;
- char *str = NULL;
-
- lstr = arg_to_str(filter, arg->exp.left);
- rstr = arg_to_str(filter, arg->exp.right);
- if (!lstr || !rstr)
- goto out;
-
- switch (arg->exp.type) {
- case TEP_FILTER_EXP_ADD:
- op = "+";
- break;
- case TEP_FILTER_EXP_SUB:
- op = "-";
- break;
- case TEP_FILTER_EXP_MUL:
- op = "*";
- break;
- case TEP_FILTER_EXP_DIV:
- op = "/";
- break;
- case TEP_FILTER_EXP_MOD:
- op = "%";
- break;
- case TEP_FILTER_EXP_RSHIFT:
- op = ">>";
- break;
- case TEP_FILTER_EXP_LSHIFT:
- op = "<<";
- break;
- case TEP_FILTER_EXP_AND:
- op = "&";
- break;
- case TEP_FILTER_EXP_OR:
- op = "|";
- break;
- case TEP_FILTER_EXP_XOR:
- op = "^";
- break;
- default:
- op = "[ERROR IN EXPRESSION TYPE]";
- break;
- }
-
- if (asprintf(&str, "%s %s %s", lstr, op, rstr) < 0)
- str = NULL;
-out:
- free(lstr);
- free(rstr);
-
- return str;
-}
-
-static char *num_to_str(struct tep_event_filter *filter, struct tep_filter_arg *arg)
-{
- char *lstr;
- char *rstr;
- char *str = NULL;
- char *op = NULL;
-
- lstr = arg_to_str(filter, arg->num.left);
- rstr = arg_to_str(filter, arg->num.right);
- if (!lstr || !rstr)
- goto out;
-
- switch (arg->num.type) {
- case TEP_FILTER_CMP_EQ:
- op = "==";
- /* fall through */
- case TEP_FILTER_CMP_NE:
- if (!op)
- op = "!=";
- /* fall through */
- case TEP_FILTER_CMP_GT:
- if (!op)
- op = ">";
- /* fall through */
- case TEP_FILTER_CMP_LT:
- if (!op)
- op = "<";
- /* fall through */
- case TEP_FILTER_CMP_GE:
- if (!op)
- op = ">=";
- /* fall through */
- case TEP_FILTER_CMP_LE:
- if (!op)
- op = "<=";
-
- if (asprintf(&str, "%s %s %s", lstr, op, rstr) < 0)
- str = NULL;
- break;
-
- default:
- /* ?? */
- break;
- }
-
-out:
- free(lstr);
- free(rstr);
- return str;
-}
-
-static char *str_to_str(struct tep_event_filter *filter, struct tep_filter_arg *arg)
-{
- char *str = NULL;
- char *op = NULL;
-
- switch (arg->str.type) {
- case TEP_FILTER_CMP_MATCH:
- op = "==";
- /* fall through */
- case TEP_FILTER_CMP_NOT_MATCH:
- if (!op)
- op = "!=";
- /* fall through */
- case TEP_FILTER_CMP_REGEX:
- if (!op)
- op = "=~";
- /* fall through */
- case TEP_FILTER_CMP_NOT_REGEX:
- if (!op)
- op = "!~";
-
- if (asprintf(&str, "%s %s \"%s\"",
- arg->str.field->name, op, arg->str.val) < 0)
- str = NULL;
- break;
-
- default:
- /* ?? */
- break;
- }
- return str;
-}
-
-static char *arg_to_str(struct tep_event_filter *filter, struct tep_filter_arg *arg)
-{
- char *str = NULL;
-
- switch (arg->type) {
- case TEP_FILTER_ARG_BOOLEAN:
- if (asprintf(&str, arg->boolean.value ? "TRUE" : "FALSE") < 0)
- str = NULL;
- return str;
-
- case TEP_FILTER_ARG_OP:
- return op_to_str(filter, arg);
-
- case TEP_FILTER_ARG_NUM:
- return num_to_str(filter, arg);
-
- case TEP_FILTER_ARG_STR:
- return str_to_str(filter, arg);
-
- case TEP_FILTER_ARG_VALUE:
- return val_to_str(filter, arg);
-
- case TEP_FILTER_ARG_FIELD:
- return field_to_str(filter, arg);
-
- case TEP_FILTER_ARG_EXP:
- return exp_to_str(filter, arg);
-
- default:
- /* ?? */
- return NULL;
- }
-
-}
-
-/**
- * tep_filter_make_string - return a string showing the filter
- * @filter: filter struct with filter information
- * @event_id: the event id to return the filter string with
- *
- * Returns a string that displays the filter contents.
- * This string must be freed with free(str).
- * NULL is returned if no filter is found or allocation failed.
- */
-char *
-tep_filter_make_string(struct tep_event_filter *filter, int event_id)
-{
- struct tep_filter_type *filter_type;
-
- if (!filter->filters)
- return NULL;
-
- filter_type = find_filter_type(filter, event_id);
-
- if (!filter_type)
- return NULL;
-
- return arg_to_str(filter, filter_type->filter);
-}
-
-/**
- * tep_filter_compare - compare two filters and return if they are the same
- * @filter1: Filter to compare with @filter2
- * @filter2: Filter to compare with @filter1
- *
- * Returns:
- * 1 if the two filters hold the same content.
- * 0 if they do not.
- */
-int tep_filter_compare(struct tep_event_filter *filter1, struct tep_event_filter *filter2)
-{
- struct tep_filter_type *filter_type1;
- struct tep_filter_type *filter_type2;
- char *str1, *str2;
- int result;
- int i;
-
- /* Do the easy checks first */
- if (filter1->filters != filter2->filters)
- return 0;
- if (!filter1->filters && !filter2->filters)
- return 1;
-
- /*
- * Now take a look at each of the events to see if they have the same
- * filters to them.
- */
- for (i = 0; i < filter1->filters; i++) {
- filter_type1 = &filter1->event_filters[i];
- filter_type2 = find_filter_type(filter2, filter_type1->event_id);
- if (!filter_type2)
- break;
- if (filter_type1->filter->type != filter_type2->filter->type)
- break;
- /* The best way to compare complex filters is with strings */
- str1 = arg_to_str(filter1, filter_type1->filter);
- str2 = arg_to_str(filter2, filter_type2->filter);
- if (str1 && str2)
- result = strcmp(str1, str2) != 0;
- else
- /* bail out if allocation fails */
- result = 1;
-
- free(str1);
- free(str2);
- if (result)
- break;
- }
-
- if (i < filter1->filters)
- return 0;
- return 1;
-}
-
+++ /dev/null
-// SPDX-License-Identifier: LGPL-2.1
-/*
- * Copyright (C) 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
- *
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdarg.h>
-#include <errno.h>
-
-#define __weak __attribute__((weak))
-
-void __vwarning(const char *fmt, va_list ap)
-{
- if (errno)
- perror("libtraceevent");
- errno = 0;
-
- fprintf(stderr, " ");
- vfprintf(stderr, fmt, ap);
-
- fprintf(stderr, "\n");
-}
-
-void __warning(const char *fmt, ...)
-{
- va_list ap;
-
- va_start(ap, fmt);
- __vwarning(fmt, ap);
- va_end(ap);
-}
-
-void __weak warning(const char *fmt, ...)
-{
- va_list ap;
-
- va_start(ap, fmt);
- __vwarning(fmt, ap);
- va_end(ap);
-}
-
-void __vpr_stat(const char *fmt, va_list ap)
-{
- vprintf(fmt, ap);
- printf("\n");
-}
-
-void __pr_stat(const char *fmt, ...)
-{
- va_list ap;
-
- va_start(ap, fmt);
- __vpr_stat(fmt, ap);
- va_end(ap);
-}
-
-void __weak vpr_stat(const char *fmt, va_list ap)
-{
- __vpr_stat(fmt, ap);
-}
-
-void __weak pr_stat(const char *fmt, ...)
-{
- va_list ap;
-
- va_start(ap, fmt);
- __vpr_stat(fmt, ap);
- va_end(ap);
-}
+++ /dev/null
-plugin_jbd2-y += plugin_jbd2.o
-plugin_hrtimer-y += plugin_hrtimer.o
-plugin_kmem-y += plugin_kmem.o
-plugin_kvm-y += plugin_kvm.o
-plugin_mac80211-y += plugin_mac80211.o
-plugin_sched_switch-y += plugin_sched_switch.o
-plugin_function-y += plugin_function.o
-plugin_futex-y += plugin_futex.o
-plugin_xen-y += plugin_xen.o
-plugin_scsi-y += plugin_scsi.o
-plugin_cfg80211-y += plugin_cfg80211.o
-plugin_tlb-y += plugin_tlb.o
\ No newline at end of file
+++ /dev/null
-# SPDX-License-Identifier: GPL-2.0
-
-#MAKEFLAGS += --no-print-directory
-
-
-# Makefiles suck: This macro sets a default value of $(2) for the
-# variable named by $(1), unless the variable has been set by
-# environment or command line. This is necessary for CC and AR
-# because make sets default values, so the simpler ?= approach
-# won't work as expected.
-define allow-override
- $(if $(or $(findstring environment,$(origin $(1))),\
- $(findstring command line,$(origin $(1)))),,\
- $(eval $(1) = $(2)))
-endef
-
-# Allow setting CC and AR, or setting CROSS_COMPILE as a prefix.
-$(call allow-override,CC,$(CROSS_COMPILE)gcc)
-$(call allow-override,AR,$(CROSS_COMPILE)ar)
-$(call allow-override,NM,$(CROSS_COMPILE)nm)
-$(call allow-override,PKG_CONFIG,pkg-config)
-
-EXT = -std=gnu99
-INSTALL = install
-
-# Use DESTDIR for installing into a different root directory.
-# This is useful for building a package. The program will be
-# installed in this directory as if it was the root directory.
-# Then the build tool can move it later.
-DESTDIR ?=
-DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
-
-LP64 := $(shell echo __LP64__ | ${CC} ${CFLAGS} -E -x c - | tail -n 1)
-ifeq ($(LP64), 1)
- libdir_relative_tmp = lib64
-else
- libdir_relative_tmp = lib
-endif
-
-libdir_relative ?= $(libdir_relative_tmp)
-prefix ?= /usr/local
-libdir = $(prefix)/$(libdir_relative)
-
-set_plugin_dir := 1
-
-# Set plugin_dir to preffered global plugin location
-# If we install under $HOME directory we go under
-# $(HOME)/.local/lib/traceevent/plugins
-#
-# We dont set PLUGIN_DIR in case we install under $HOME
-# directory, because by default the code looks under:
-# $(HOME)/.local/lib/traceevent/plugins by default.
-#
-ifeq ($(plugin_dir),)
-ifeq ($(prefix),$(HOME))
-override plugin_dir = $(HOME)/.local/lib/traceevent/plugins
-set_plugin_dir := 0
-else
-override plugin_dir = $(libdir)/traceevent/plugins
-endif
-endif
-
-ifeq ($(set_plugin_dir),1)
-PLUGIN_DIR = -DPLUGIN_DIR="$(plugin_dir)"
-PLUGIN_DIR_SQ = '$(subst ','\'',$(PLUGIN_DIR))'
-endif
-
-include ../../../scripts/Makefile.include
-
-# copy a bit from Linux kbuild
-
-ifeq ("$(origin V)", "command line")
- VERBOSE = $(V)
-endif
-ifndef VERBOSE
- VERBOSE = 0
-endif
-
-ifeq ($(srctree),)
-srctree := $(patsubst %/,%,$(dir $(CURDIR)))
-srctree := $(patsubst %/,%,$(dir $(srctree)))
-srctree := $(patsubst %/,%,$(dir $(srctree)))
-srctree := $(patsubst %/,%,$(dir $(srctree)))
-#$(info Determined 'srctree' to be $(srctree))
-endif
-
-export prefix libdir src obj
-
-# Shell quotes
-plugin_dir_SQ = $(subst ','\'',$(plugin_dir))
-
-CONFIG_INCLUDES =
-CONFIG_LIBS =
-CONFIG_FLAGS =
-
-OBJ = $@
-N =
-
-INCLUDES = -I. -I.. -I $(srctree)/tools/include $(CONFIG_INCLUDES)
-
-# Set compile option CFLAGS
-ifdef EXTRA_CFLAGS
- CFLAGS := $(EXTRA_CFLAGS)
-else
- CFLAGS := -g -Wall
-endif
-
-# Append required CFLAGS
-override CFLAGS += -fPIC
-override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)
-override CFLAGS += $(udis86-flags) -D_GNU_SOURCE
-
-ifeq ($(VERBOSE),1)
- Q =
-else
- Q = @
-endif
-
-# Disable command line variables (CFLAGS) override from top
-# level Makefile (perf), otherwise build Makefile will get
-# the same command line setup.
-MAKEOVERRIDES=
-
-export srctree OUTPUT CC LD CFLAGS V
-
-build := -f $(srctree)/tools/build/Makefile.build dir=. obj
-
-DYNAMIC_LIST_FILE := $(OUTPUT)libtraceevent-dynamic-list
-
-PLUGINS = plugin_jbd2.so
-PLUGINS += plugin_hrtimer.so
-PLUGINS += plugin_kmem.so
-PLUGINS += plugin_kvm.so
-PLUGINS += plugin_mac80211.so
-PLUGINS += plugin_sched_switch.so
-PLUGINS += plugin_function.so
-PLUGINS += plugin_futex.so
-PLUGINS += plugin_xen.so
-PLUGINS += plugin_scsi.so
-PLUGINS += plugin_cfg80211.so
-PLUGINS += plugin_tlb.so
-
-PLUGINS := $(addprefix $(OUTPUT),$(PLUGINS))
-PLUGINS_IN := $(PLUGINS:.so=-in.o)
-
-plugins: $(PLUGINS) $(DYNAMIC_LIST_FILE)
-
-__plugin_obj = $(notdir $@)
- plugin_obj = $(__plugin_obj:-in.o=)
-
-$(PLUGINS_IN): force
- $(Q)$(MAKE) $(build)=$(plugin_obj)
-
-$(OUTPUT)libtraceevent-dynamic-list: $(PLUGINS)
- $(QUIET_GEN)$(call do_generate_dynamic_list_file, $(PLUGINS), $@)
-
-$(OUTPUT)%.so: $(OUTPUT)%-in.o
- $(QUIET_LINK)$(CC) $(CFLAGS) -shared $(LDFLAGS) -nostartfiles -o $@ $^
-
-define update_dir
- (echo $1 > $@.tmp; \
- if [ -r $@ ] && cmp -s $@ $@.tmp; then \
- rm -f $@.tmp; \
- else \
- echo ' UPDATE $@'; \
- mv -f $@.tmp $@; \
- fi);
-endef
-
-tags: force
- $(RM) tags
- find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \
- --regex-c++='/_PE\(([^,)]*).*/TEP_ERRNO__\1/'
-
-TAGS: force
- $(RM) TAGS
- find . -name '*.[ch]' | xargs etags \
- --regex='/_PE(\([^,)]*\).*/TEP_ERRNO__\1/'
-
-define do_install_mkdir
- if [ ! -d '$(DESTDIR_SQ)$1' ]; then \
- $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1'; \
- fi
-endef
-
-define do_install
- $(call do_install_mkdir,$2); \
- $(INSTALL) $(if $3,-m $3,) $1 '$(DESTDIR_SQ)$2'
-endef
-
-define do_install_plugins
- for plugin in $1; do \
- $(call do_install,$$plugin,$(plugin_dir_SQ)); \
- done
-endef
-
-define do_generate_dynamic_list_file
- symbol_type=`$(NM) -u -D $1 | awk 'NF>1 {print $$1}' | \
- xargs echo "U w W" | tr 'w ' 'W\n' | sort -u | xargs echo`;\
- if [ "$$symbol_type" = "U W" ];then \
- (echo '{'; \
- $(NM) -u -D $1 | awk 'NF>1 {sub("@.*", "", $$2); print "\t"$$2";"}' | sort -u;\
- echo '};'; \
- ) > $2; \
- else \
- (echo Either missing one of [$1] or bad version of $(NM)) 1>&2;\
- fi
-endef
-
-install: $(PLUGINS)
- $(call QUIET_INSTALL, trace_plugins) \
- $(call do_install_plugins, $(PLUGINS))
-
-clean:
- $(call QUIET_CLEAN, trace_plugins) \
- $(RM) *.o *~ $(TARGETS) *.a *.so $(VERSION_FILES) .*.d .*.cmd; \
- $(RM) $(OUTPUT)libtraceevent-dynamic-list \
- $(RM) TRACEEVENT-CFLAGS tags TAGS;
-
-PHONY += force plugins
-force:
-
-# Declare the contents of the .PHONY variable as phony. We keep that
-# information in a variable so we can use it in if_changed and friends.
-.PHONY: $(PHONY)
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-#include <stdio.h>
-#include <string.h>
-#include <inttypes.h>
-#include <endian.h>
-#include "event-parse.h"
-
-/*
- * From glibc endian.h, for older systems where it is not present, e.g.: RHEL5,
- * Fedora6.
- */
-#ifndef le16toh
-# if __BYTE_ORDER == __LITTLE_ENDIAN
-# define le16toh(x) (x)
-# else
-# define le16toh(x) __bswap_16 (x)
-# endif
-#endif
-
-
-static unsigned long long
-process___le16_to_cpup(struct trace_seq *s, unsigned long long *args)
-{
- uint16_t *val = (uint16_t *) (unsigned long) args[0];
- return val ? (long long) le16toh(*val) : 0;
-}
-
-int TEP_PLUGIN_LOADER(struct tep_handle *tep)
-{
- tep_register_print_function(tep,
- process___le16_to_cpup,
- TEP_FUNC_ARG_INT,
- "__le16_to_cpup",
- TEP_FUNC_ARG_PTR,
- TEP_FUNC_ARG_VOID);
- return 0;
-}
-
-void TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
-{
- tep_unregister_print_function(tep, process___le16_to_cpup,
- "__le16_to_cpup");
-}
+++ /dev/null
-// SPDX-License-Identifier: LGPL-2.1
-/*
- * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "event-parse.h"
-#include "event-utils.h"
-#include "trace-seq.h"
-
-static struct func_stack {
- int size;
- char **stack;
-} *fstack;
-
-static int cpus = -1;
-
-#define STK_BLK 10
-
-struct tep_plugin_option plugin_options[] =
-{
- {
- .name = "parent",
- .plugin_alias = "ftrace",
- .description =
- "Print parent of functions for function events",
- },
- {
- .name = "indent",
- .plugin_alias = "ftrace",
- .description =
- "Try to show function call indents, based on parents",
- .set = 1,
- },
- {
- .name = "offset",
- .plugin_alias = "ftrace",
- .description =
- "Show function names as well as their offsets",
- .set = 0,
- },
- {
- .name = NULL,
- }
-};
-
-static struct tep_plugin_option *ftrace_parent = &plugin_options[0];
-static struct tep_plugin_option *ftrace_indent = &plugin_options[1];
-static struct tep_plugin_option *ftrace_offset = &plugin_options[2];
-
-static void add_child(struct func_stack *stack, const char *child, int pos)
-{
- int i;
-
- if (!child)
- return;
-
- if (pos < stack->size)
- free(stack->stack[pos]);
- else {
- char **ptr;
-
- ptr = realloc(stack->stack, sizeof(char *) *
- (stack->size + STK_BLK));
- if (!ptr) {
- warning("could not allocate plugin memory\n");
- return;
- }
-
- stack->stack = ptr;
-
- for (i = stack->size; i < stack->size + STK_BLK; i++)
- stack->stack[i] = NULL;
- stack->size += STK_BLK;
- }
-
- stack->stack[pos] = strdup(child);
-}
-
-static int add_and_get_index(const char *parent, const char *child, int cpu)
-{
- int i;
-
- if (cpu < 0)
- return 0;
-
- if (cpu > cpus) {
- struct func_stack *ptr;
-
- ptr = realloc(fstack, sizeof(*fstack) * (cpu + 1));
- if (!ptr) {
- warning("could not allocate plugin memory\n");
- return 0;
- }
-
- fstack = ptr;
-
- /* Account for holes in the cpu count */
- for (i = cpus + 1; i <= cpu; i++)
- memset(&fstack[i], 0, sizeof(fstack[i]));
- cpus = cpu;
- }
-
- for (i = 0; i < fstack[cpu].size && fstack[cpu].stack[i]; i++) {
- if (strcmp(parent, fstack[cpu].stack[i]) == 0) {
- add_child(&fstack[cpu], child, i+1);
- return i;
- }
- }
-
- /* Not found */
- add_child(&fstack[cpu], parent, 0);
- add_child(&fstack[cpu], child, 1);
- return 0;
-}
-
-static void show_function(struct trace_seq *s, struct tep_handle *tep,
- const char *func, unsigned long long function)
-{
- unsigned long long offset;
-
- trace_seq_printf(s, "%s", func);
- if (ftrace_offset->set) {
- offset = tep_find_function_address(tep, function);
- trace_seq_printf(s, "+0x%x ", (int)(function - offset));
- }
-}
-
-static int function_handler(struct trace_seq *s, struct tep_record *record,
- struct tep_event *event, void *context)
-{
- struct tep_handle *tep = event->tep;
- unsigned long long function;
- unsigned long long pfunction;
- const char *func;
- const char *parent;
- int index = 0;
-
- if (tep_get_field_val(s, event, "ip", record, &function, 1))
- return trace_seq_putc(s, '!');
-
- func = tep_find_function(tep, function);
-
- if (tep_get_field_val(s, event, "parent_ip", record, &pfunction, 1))
- return trace_seq_putc(s, '!');
-
- parent = tep_find_function(tep, pfunction);
-
- if (parent && ftrace_indent->set)
- index = add_and_get_index(parent, func, record->cpu);
-
- trace_seq_printf(s, "%*s", index*3, "");
-
- if (func)
- show_function(s, tep, func, function);
- else
- trace_seq_printf(s, "0x%llx", function);
-
- if (ftrace_parent->set) {
- trace_seq_printf(s, " <-- ");
- if (parent)
- show_function(s, tep, parent, pfunction);
- else
- trace_seq_printf(s, "0x%llx", pfunction);
- }
-
- return 0;
-}
-
-static int
-trace_stack_handler(struct trace_seq *s, struct tep_record *record,
- struct tep_event *event, void *context)
-{
- struct tep_format_field *field;
- unsigned long long addr;
- const char *func;
- int long_size;
- void *data = record->data;
-
- field = tep_find_any_field(event, "caller");
- if (!field) {
- trace_seq_printf(s, "<CANT FIND FIELD %s>", "caller");
- return 0;
- }
-
- trace_seq_puts(s, "<stack trace >\n");
-
- long_size = tep_get_long_size(event->tep);
-
- for (data += field->offset; data < record->data + record->size;
- data += long_size) {
- addr = tep_read_number(event->tep, data, long_size);
-
- if ((long_size == 8 && addr == (unsigned long long)-1) ||
- ((int)addr == -1))
- break;
-
- func = tep_find_function(event->tep, addr);
- if (func)
- trace_seq_printf(s, "=> %s (%llx)\n", func, addr);
- else
- trace_seq_printf(s, "=> %llx\n", addr);
- }
-
- return 0;
-}
-
-static int
-trace_raw_data_handler(struct trace_seq *s, struct tep_record *record,
- struct tep_event *event, void *context)
-{
- struct tep_format_field *field;
- unsigned long long id;
- int long_size;
- void *data = record->data;
-
- if (tep_get_field_val(s, event, "id", record, &id, 1))
- return trace_seq_putc(s, '!');
-
- trace_seq_printf(s, "# %llx", id);
-
- field = tep_find_any_field(event, "buf");
- if (!field) {
- trace_seq_printf(s, "<CANT FIND FIELD %s>", "buf");
- return 0;
- }
-
- long_size = tep_get_long_size(event->tep);
-
- for (data += field->offset; data < record->data + record->size;
- data += long_size) {
- int size = sizeof(long);
- int left = (record->data + record->size) - data;
- int i;
-
- if (size > left)
- size = left;
-
- for (i = 0; i < size; i++)
- trace_seq_printf(s, " %02x", *(unsigned char *)(data + i));
- }
-
- return 0;
-}
-
-int TEP_PLUGIN_LOADER(struct tep_handle *tep)
-{
- tep_register_event_handler(tep, -1, "ftrace", "function",
- function_handler, NULL);
-
- tep_register_event_handler(tep, -1, "ftrace", "kernel_stack",
- trace_stack_handler, NULL);
-
- tep_register_event_handler(tep, -1, "ftrace", "raw_data",
- trace_raw_data_handler, NULL);
-
- tep_plugin_add_options("ftrace", plugin_options);
-
- return 0;
-}
-
-void TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
-{
- int i, x;
-
- tep_unregister_event_handler(tep, -1, "ftrace", "function",
- function_handler, NULL);
-
- for (i = 0; i <= cpus; i++) {
- for (x = 0; x < fstack[i].size && fstack[i].stack[x]; x++)
- free(fstack[i].stack[x]);
- free(fstack[i].stack);
- }
-
- tep_plugin_remove_options(plugin_options);
-
- free(fstack);
- fstack = NULL;
- cpus = -1;
-}
+++ /dev/null
-// SPDX-License-Identifier: LGPL-2.1
-/*
- * Copyright (C) 2017 National Instruments Corp.
- *
- * Author: Julia Cartwright <julia@ni.com>
- *
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <linux/futex.h>
-
-#include "event-parse.h"
-
-#define ARRAY_SIZE(_a) (sizeof(_a) / sizeof((_a)[0]))
-
-struct futex_args {
- unsigned long long uaddr;
- unsigned long long op;
- unsigned long long val;
- unsigned long long utime; /* or val2 */
- unsigned long long uaddr2;
- unsigned long long val3;
-};
-
-struct futex_op {
- const char *name;
- const char *fmt_val;
- const char *fmt_utime;
- const char *fmt_uaddr2;
- const char *fmt_val3;
-};
-
-static const struct futex_op futex_op_tbl[] = {
- { "FUTEX_WAIT", " val=0x%08llx", " utime=0x%08llx", NULL, NULL },
- { "FUTEX_WAKE", " val=%llu", NULL, NULL, NULL },
- { "FUTEX_FD", " val=%llu", NULL, NULL, NULL },
- { "FUTEX_REQUEUE", " val=%llu", " val2=%llu", " uaddr2=0x%08llx", NULL },
- { "FUTEX_CMP_REQUEUE", " val=%llu", " val2=%llu", " uaddr2=0x%08llx", " val3=0x%08llx" },
- { "FUTEX_WAKE_OP", " val=%llu", " val2=%llu", " uaddr2=0x%08llx", " val3=0x%08llx" },
- { "FUTEX_LOCK_PI", NULL, " utime=0x%08llx", NULL, NULL },
- { "FUTEX_UNLOCK_PI", NULL, NULL, NULL, NULL },
- { "FUTEX_TRYLOCK_PI", NULL, NULL, NULL, NULL },
- { "FUTEX_WAIT_BITSET", " val=0x%08llx", " utime=0x%08llx", NULL, " val3=0x%08llx" },
- { "FUTEX_WAKE_BITSET", " val=%llu", NULL, NULL, " val3=0x%08llx" },
- { "FUTEX_WAIT_REQUEUE_PI", " val=0x%08llx", " utime=0x%08llx", " uaddr2=0x%08llx", " val3=0x%08llx" },
- { "FUTEX_CMP_REQUEUE_PI", " val=%llu", " val2=%llu", " uaddr2=0x%08llx", " val3=0x%08llx" },
-};
-
-
-static void futex_print(struct trace_seq *s, const struct futex_args *args,
- const struct futex_op *fop)
-{
- trace_seq_printf(s, " uaddr=0x%08llx", args->uaddr);
-
- if (fop->fmt_val)
- trace_seq_printf(s, fop->fmt_val, args->val);
-
- if (fop->fmt_utime)
- trace_seq_printf(s,fop->fmt_utime, args->utime);
-
- if (fop->fmt_uaddr2)
- trace_seq_printf(s, fop->fmt_uaddr2, args->uaddr2);
-
- if (fop->fmt_val3)
- trace_seq_printf(s, fop->fmt_val3, args->val3);
-}
-
-static int futex_handler(struct trace_seq *s, struct tep_record *record,
- struct tep_event *event, void *context)
-{
- const struct futex_op *fop;
- struct futex_args args;
- unsigned long long cmd;
-
- if (tep_get_field_val(s, event, "uaddr", record, &args.uaddr, 1))
- return 1;
-
- if (tep_get_field_val(s, event, "op", record, &args.op, 1))
- return 1;
-
- if (tep_get_field_val(s, event, "val", record, &args.val, 1))
- return 1;
-
- if (tep_get_field_val(s, event, "utime", record, &args.utime, 1))
- return 1;
-
- if (tep_get_field_val(s, event, "uaddr2", record, &args.uaddr2, 1))
- return 1;
-
- if (tep_get_field_val(s, event, "val3", record, &args.val3, 1))
- return 1;
-
- cmd = args.op & FUTEX_CMD_MASK;
- if (cmd >= ARRAY_SIZE(futex_op_tbl))
- return 1;
-
- fop = &futex_op_tbl[cmd];
-
- trace_seq_printf(s, "op=%s", fop->name);
-
- if (args.op & FUTEX_PRIVATE_FLAG)
- trace_seq_puts(s, "|FUTEX_PRIVATE_FLAG");
-
- if (args.op & FUTEX_CLOCK_REALTIME)
- trace_seq_puts(s, "|FUTEX_CLOCK_REALTIME");
-
- futex_print(s, &args, fop);
- return 0;
-}
-
-int TEP_PLUGIN_LOADER(struct tep_handle *tep)
-{
- tep_register_event_handler(tep, -1, "syscalls", "sys_enter_futex",
- futex_handler, NULL);
- return 0;
-}
-
-void TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
-{
- tep_unregister_event_handler(tep, -1, "syscalls", "sys_enter_futex",
- futex_handler, NULL);
-}
+++ /dev/null
-// SPDX-License-Identifier: LGPL-2.1
-/*
- * Copyright (C) 2009 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
- * Copyright (C) 2009 Johannes Berg <johannes@sipsolutions.net>
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "event-parse.h"
-#include "trace-seq.h"
-
-static int timer_expire_handler(struct trace_seq *s,
- struct tep_record *record,
- struct tep_event *event, void *context)
-{
- trace_seq_printf(s, "hrtimer=");
-
- if (tep_print_num_field(s, "0x%llx", event, "timer",
- record, 0) == -1)
- tep_print_num_field(s, "0x%llx", event, "hrtimer",
- record, 1);
-
- trace_seq_printf(s, " now=");
-
- tep_print_num_field(s, "%llu", event, "now", record, 1);
-
- tep_print_func_field(s, " function=%s", event, "function",
- record, 0);
- return 0;
-}
-
-static int timer_start_handler(struct trace_seq *s,
- struct tep_record *record,
- struct tep_event *event, void *context)
-{
- trace_seq_printf(s, "hrtimer=");
-
- if (tep_print_num_field(s, "0x%llx", event, "timer",
- record, 0) == -1)
- tep_print_num_field(s, "0x%llx", event, "hrtimer",
- record, 1);
-
- tep_print_func_field(s, " function=%s", event, "function",
- record, 0);
-
- trace_seq_printf(s, " expires=");
- tep_print_num_field(s, "%llu", event, "expires", record, 1);
-
- trace_seq_printf(s, " softexpires=");
- tep_print_num_field(s, "%llu", event, "softexpires", record, 1);
- return 0;
-}
-
-int TEP_PLUGIN_LOADER(struct tep_handle *tep)
-{
- tep_register_event_handler(tep, -1,
- "timer", "hrtimer_expire_entry",
- timer_expire_handler, NULL);
-
- tep_register_event_handler(tep, -1, "timer", "hrtimer_start",
- timer_start_handler, NULL);
- return 0;
-}
-
-void TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
-{
- tep_unregister_event_handler(tep, -1,
- "timer", "hrtimer_expire_entry",
- timer_expire_handler, NULL);
-
- tep_unregister_event_handler(tep, -1, "timer", "hrtimer_start",
- timer_start_handler, NULL);
-}
+++ /dev/null
-// SPDX-License-Identifier: LGPL-2.1
-/*
- * Copyright (C) 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "event-parse.h"
-#include "trace-seq.h"
-
-#define MINORBITS 20
-#define MINORMASK ((1U << MINORBITS) - 1)
-
-#define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS))
-#define MINOR(dev) ((unsigned int) ((dev) & MINORMASK))
-
-static unsigned long long
-process_jbd2_dev_to_name(struct trace_seq *s, unsigned long long *args)
-{
- unsigned int dev = args[0];
-
- trace_seq_printf(s, "%d:%d", MAJOR(dev), MINOR(dev));
- return 0;
-}
-
-static unsigned long long
-process_jiffies_to_msecs(struct trace_seq *s, unsigned long long *args)
-{
- unsigned long long jiffies = args[0];
-
- trace_seq_printf(s, "%lld", jiffies);
- return jiffies;
-}
-
-int TEP_PLUGIN_LOADER(struct tep_handle *tep)
-{
- tep_register_print_function(tep,
- process_jbd2_dev_to_name,
- TEP_FUNC_ARG_STRING,
- "jbd2_dev_to_name",
- TEP_FUNC_ARG_INT,
- TEP_FUNC_ARG_VOID);
-
- tep_register_print_function(tep,
- process_jiffies_to_msecs,
- TEP_FUNC_ARG_LONG,
- "jiffies_to_msecs",
- TEP_FUNC_ARG_LONG,
- TEP_FUNC_ARG_VOID);
- return 0;
-}
-
-void TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
-{
- tep_unregister_print_function(tep, process_jbd2_dev_to_name,
- "jbd2_dev_to_name");
-
- tep_unregister_print_function(tep, process_jiffies_to_msecs,
- "jiffies_to_msecs");
-}
+++ /dev/null
-// SPDX-License-Identifier: LGPL-2.1
-/*
- * Copyright (C) 2009 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "event-parse.h"
-#include "trace-seq.h"
-
-static int call_site_handler(struct trace_seq *s, struct tep_record *record,
- struct tep_event *event, void *context)
-{
- struct tep_format_field *field;
- unsigned long long val, addr;
- void *data = record->data;
- const char *func;
-
- field = tep_find_field(event, "call_site");
- if (!field)
- return 1;
-
- if (tep_read_number_field(field, data, &val))
- return 1;
-
- func = tep_find_function(event->tep, val);
- if (!func)
- return 1;
-
- addr = tep_find_function_address(event->tep, val);
-
- trace_seq_printf(s, "(%s+0x%x) ", func, (int)(val - addr));
- return 1;
-}
-
-int TEP_PLUGIN_LOADER(struct tep_handle *tep)
-{
- tep_register_event_handler(tep, -1, "kmem", "kfree",
- call_site_handler, NULL);
-
- tep_register_event_handler(tep, -1, "kmem", "kmalloc",
- call_site_handler, NULL);
-
- tep_register_event_handler(tep, -1, "kmem", "kmalloc_node",
- call_site_handler, NULL);
-
- tep_register_event_handler(tep, -1, "kmem", "kmem_cache_alloc",
- call_site_handler, NULL);
-
- tep_register_event_handler(tep, -1, "kmem",
- "kmem_cache_alloc_node",
- call_site_handler, NULL);
-
- tep_register_event_handler(tep, -1, "kmem", "kmem_cache_free",
- call_site_handler, NULL);
- return 0;
-}
-
-void TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
-{
- tep_unregister_event_handler(tep, -1, "kmem", "kfree",
- call_site_handler, NULL);
-
- tep_unregister_event_handler(tep, -1, "kmem", "kmalloc",
- call_site_handler, NULL);
-
- tep_unregister_event_handler(tep, -1, "kmem", "kmalloc_node",
- call_site_handler, NULL);
-
- tep_unregister_event_handler(tep, -1, "kmem", "kmem_cache_alloc",
- call_site_handler, NULL);
-
- tep_unregister_event_handler(tep, -1, "kmem",
- "kmem_cache_alloc_node",
- call_site_handler, NULL);
-
- tep_unregister_event_handler(tep, -1, "kmem", "kmem_cache_free",
- call_site_handler, NULL);
-}
+++ /dev/null
-// SPDX-License-Identifier: LGPL-2.1
-/*
- * Copyright (C) 2009 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdint.h>
-
-#include "event-parse.h"
-#include "trace-seq.h"
-
-#ifdef HAVE_UDIS86
-
-#include <udis86.h>
-
-static ud_t ud;
-
-static void init_disassembler(void)
-{
- ud_init(&ud);
- ud_set_syntax(&ud, UD_SYN_ATT);
-}
-
-static const char *disassemble(unsigned char *insn, int len, uint64_t rip,
- int cr0_pe, int eflags_vm,
- int cs_d, int cs_l)
-{
- int mode;
-
- if (!cr0_pe)
- mode = 16;
- else if (eflags_vm)
- mode = 16;
- else if (cs_l)
- mode = 64;
- else if (cs_d)
- mode = 32;
- else
- mode = 16;
-
- ud_set_pc(&ud, rip);
- ud_set_mode(&ud, mode);
- ud_set_input_buffer(&ud, insn, len);
- ud_disassemble(&ud);
- return ud_insn_asm(&ud);
-}
-
-#else
-
-static void init_disassembler(void)
-{
-}
-
-static const char *disassemble(unsigned char *insn, int len, uint64_t rip,
- int cr0_pe, int eflags_vm,
- int cs_d, int cs_l)
-{
- static char out[15*3+1];
- int i;
-
- for (i = 0; i < len; ++i)
- sprintf(out + i * 3, "%02x ", insn[i]);
- out[len*3-1] = '\0';
- return out;
-}
-
-#endif
-
-
-#define VMX_EXIT_REASONS \
- _ER(EXCEPTION_NMI, 0) \
- _ER(EXTERNAL_INTERRUPT, 1) \
- _ER(TRIPLE_FAULT, 2) \
- _ER(PENDING_INTERRUPT, 7) \
- _ER(NMI_WINDOW, 8) \
- _ER(TASK_SWITCH, 9) \
- _ER(CPUID, 10) \
- _ER(HLT, 12) \
- _ER(INVD, 13) \
- _ER(INVLPG, 14) \
- _ER(RDPMC, 15) \
- _ER(RDTSC, 16) \
- _ER(VMCALL, 18) \
- _ER(VMCLEAR, 19) \
- _ER(VMLAUNCH, 20) \
- _ER(VMPTRLD, 21) \
- _ER(VMPTRST, 22) \
- _ER(VMREAD, 23) \
- _ER(VMRESUME, 24) \
- _ER(VMWRITE, 25) \
- _ER(VMOFF, 26) \
- _ER(VMON, 27) \
- _ER(CR_ACCESS, 28) \
- _ER(DR_ACCESS, 29) \
- _ER(IO_INSTRUCTION, 30) \
- _ER(MSR_READ, 31) \
- _ER(MSR_WRITE, 32) \
- _ER(MWAIT_INSTRUCTION, 36) \
- _ER(MONITOR_INSTRUCTION, 39) \
- _ER(PAUSE_INSTRUCTION, 40) \
- _ER(MCE_DURING_VMENTRY, 41) \
- _ER(TPR_BELOW_THRESHOLD, 43) \
- _ER(APIC_ACCESS, 44) \
- _ER(EOI_INDUCED, 45) \
- _ER(EPT_VIOLATION, 48) \
- _ER(EPT_MISCONFIG, 49) \
- _ER(INVEPT, 50) \
- _ER(PREEMPTION_TIMER, 52) \
- _ER(WBINVD, 54) \
- _ER(XSETBV, 55) \
- _ER(APIC_WRITE, 56) \
- _ER(INVPCID, 58) \
- _ER(PML_FULL, 62) \
- _ER(XSAVES, 63) \
- _ER(XRSTORS, 64)
-
-#define SVM_EXIT_REASONS \
- _ER(EXIT_READ_CR0, 0x000) \
- _ER(EXIT_READ_CR3, 0x003) \
- _ER(EXIT_READ_CR4, 0x004) \
- _ER(EXIT_READ_CR8, 0x008) \
- _ER(EXIT_WRITE_CR0, 0x010) \
- _ER(EXIT_WRITE_CR3, 0x013) \
- _ER(EXIT_WRITE_CR4, 0x014) \
- _ER(EXIT_WRITE_CR8, 0x018) \
- _ER(EXIT_READ_DR0, 0x020) \
- _ER(EXIT_READ_DR1, 0x021) \
- _ER(EXIT_READ_DR2, 0x022) \
- _ER(EXIT_READ_DR3, 0x023) \
- _ER(EXIT_READ_DR4, 0x024) \
- _ER(EXIT_READ_DR5, 0x025) \
- _ER(EXIT_READ_DR6, 0x026) \
- _ER(EXIT_READ_DR7, 0x027) \
- _ER(EXIT_WRITE_DR0, 0x030) \
- _ER(EXIT_WRITE_DR1, 0x031) \
- _ER(EXIT_WRITE_DR2, 0x032) \
- _ER(EXIT_WRITE_DR3, 0x033) \
- _ER(EXIT_WRITE_DR4, 0x034) \
- _ER(EXIT_WRITE_DR5, 0x035) \
- _ER(EXIT_WRITE_DR6, 0x036) \
- _ER(EXIT_WRITE_DR7, 0x037) \
- _ER(EXIT_EXCP_DE, 0x040) \
- _ER(EXIT_EXCP_DB, 0x041) \
- _ER(EXIT_EXCP_BP, 0x043) \
- _ER(EXIT_EXCP_OF, 0x044) \
- _ER(EXIT_EXCP_BR, 0x045) \
- _ER(EXIT_EXCP_UD, 0x046) \
- _ER(EXIT_EXCP_NM, 0x047) \
- _ER(EXIT_EXCP_DF, 0x048) \
- _ER(EXIT_EXCP_TS, 0x04a) \
- _ER(EXIT_EXCP_NP, 0x04b) \
- _ER(EXIT_EXCP_SS, 0x04c) \
- _ER(EXIT_EXCP_GP, 0x04d) \
- _ER(EXIT_EXCP_PF, 0x04e) \
- _ER(EXIT_EXCP_MF, 0x050) \
- _ER(EXIT_EXCP_AC, 0x051) \
- _ER(EXIT_EXCP_MC, 0x052) \
- _ER(EXIT_EXCP_XF, 0x053) \
- _ER(EXIT_INTR, 0x060) \
- _ER(EXIT_NMI, 0x061) \
- _ER(EXIT_SMI, 0x062) \
- _ER(EXIT_INIT, 0x063) \
- _ER(EXIT_VINTR, 0x064) \
- _ER(EXIT_CR0_SEL_WRITE, 0x065) \
- _ER(EXIT_IDTR_READ, 0x066) \
- _ER(EXIT_GDTR_READ, 0x067) \
- _ER(EXIT_LDTR_READ, 0x068) \
- _ER(EXIT_TR_READ, 0x069) \
- _ER(EXIT_IDTR_WRITE, 0x06a) \
- _ER(EXIT_GDTR_WRITE, 0x06b) \
- _ER(EXIT_LDTR_WRITE, 0x06c) \
- _ER(EXIT_TR_WRITE, 0x06d) \
- _ER(EXIT_RDTSC, 0x06e) \
- _ER(EXIT_RDPMC, 0x06f) \
- _ER(EXIT_PUSHF, 0x070) \
- _ER(EXIT_POPF, 0x071) \
- _ER(EXIT_CPUID, 0x072) \
- _ER(EXIT_RSM, 0x073) \
- _ER(EXIT_IRET, 0x074) \
- _ER(EXIT_SWINT, 0x075) \
- _ER(EXIT_INVD, 0x076) \
- _ER(EXIT_PAUSE, 0x077) \
- _ER(EXIT_HLT, 0x078) \
- _ER(EXIT_INVLPG, 0x079) \
- _ER(EXIT_INVLPGA, 0x07a) \
- _ER(EXIT_IOIO, 0x07b) \
- _ER(EXIT_MSR, 0x07c) \
- _ER(EXIT_TASK_SWITCH, 0x07d) \
- _ER(EXIT_FERR_FREEZE, 0x07e) \
- _ER(EXIT_SHUTDOWN, 0x07f) \
- _ER(EXIT_VMRUN, 0x080) \
- _ER(EXIT_VMMCALL, 0x081) \
- _ER(EXIT_VMLOAD, 0x082) \
- _ER(EXIT_VMSAVE, 0x083) \
- _ER(EXIT_STGI, 0x084) \
- _ER(EXIT_CLGI, 0x085) \
- _ER(EXIT_SKINIT, 0x086) \
- _ER(EXIT_RDTSCP, 0x087) \
- _ER(EXIT_ICEBP, 0x088) \
- _ER(EXIT_WBINVD, 0x089) \
- _ER(EXIT_MONITOR, 0x08a) \
- _ER(EXIT_MWAIT, 0x08b) \
- _ER(EXIT_MWAIT_COND, 0x08c) \
- _ER(EXIT_XSETBV, 0x08d) \
- _ER(EXIT_NPF, 0x400) \
- _ER(EXIT_AVIC_INCOMPLETE_IPI, 0x401) \
- _ER(EXIT_AVIC_UNACCELERATED_ACCESS, 0x402) \
- _ER(EXIT_ERR, -1)
-
-#define _ER(reason, val) { #reason, val },
-struct str_values {
- const char *str;
- int val;
-};
-
-static struct str_values vmx_exit_reasons[] = {
- VMX_EXIT_REASONS
- { NULL, -1}
-};
-
-static struct str_values svm_exit_reasons[] = {
- SVM_EXIT_REASONS
- { NULL, -1}
-};
-
-static struct isa_exit_reasons {
- unsigned isa;
- struct str_values *strings;
-} isa_exit_reasons[] = {
- { .isa = 1, .strings = vmx_exit_reasons },
- { .isa = 2, .strings = svm_exit_reasons },
- { }
-};
-
-static const char *find_exit_reason(unsigned isa, int val)
-{
- struct str_values *strings = NULL;
- int i;
-
- for (i = 0; isa_exit_reasons[i].strings; ++i)
- if (isa_exit_reasons[i].isa == isa) {
- strings = isa_exit_reasons[i].strings;
- break;
- }
- if (!strings)
- return "UNKNOWN-ISA";
- for (i = 0; strings[i].str; i++)
- if (strings[i].val == val)
- break;
-
- return strings[i].str;
-}
-
-static int print_exit_reason(struct trace_seq *s, struct tep_record *record,
- struct tep_event *event, const char *field)
-{
- unsigned long long isa;
- unsigned long long val;
- const char *reason;
-
- if (tep_get_field_val(s, event, field, record, &val, 1) < 0)
- return -1;
-
- if (tep_get_field_val(s, event, "isa", record, &isa, 0) < 0)
- isa = 1;
-
- reason = find_exit_reason(isa, val);
- if (reason)
- trace_seq_printf(s, "reason %s", reason);
- else
- trace_seq_printf(s, "reason UNKNOWN (%llu)", val);
- return 0;
-}
-
-static int kvm_exit_handler(struct trace_seq *s, struct tep_record *record,
- struct tep_event *event, void *context)
-{
- unsigned long long info1 = 0, info2 = 0;
-
- if (print_exit_reason(s, record, event, "exit_reason") < 0)
- return -1;
-
- tep_print_num_field(s, " rip 0x%lx", event, "guest_rip", record, 1);
-
- if (tep_get_field_val(s, event, "info1", record, &info1, 0) >= 0
- && tep_get_field_val(s, event, "info2", record, &info2, 0) >= 0)
- trace_seq_printf(s, " info %llx %llx", info1, info2);
-
- return 0;
-}
-
-#define KVM_EMUL_INSN_F_CR0_PE (1 << 0)
-#define KVM_EMUL_INSN_F_EFL_VM (1 << 1)
-#define KVM_EMUL_INSN_F_CS_D (1 << 2)
-#define KVM_EMUL_INSN_F_CS_L (1 << 3)
-
-static int kvm_emulate_insn_handler(struct trace_seq *s,
- struct tep_record *record,
- struct tep_event *event, void *context)
-{
- unsigned long long rip, csbase, len, flags, failed;
- int llen;
- uint8_t *insn;
- const char *disasm;
-
- if (tep_get_field_val(s, event, "rip", record, &rip, 1) < 0)
- return -1;
-
- if (tep_get_field_val(s, event, "csbase", record, &csbase, 1) < 0)
- return -1;
-
- if (tep_get_field_val(s, event, "len", record, &len, 1) < 0)
- return -1;
-
- if (tep_get_field_val(s, event, "flags", record, &flags, 1) < 0)
- return -1;
-
- if (tep_get_field_val(s, event, "failed", record, &failed, 1) < 0)
- return -1;
-
- insn = tep_get_field_raw(s, event, "insn", record, &llen, 1);
- if (!insn)
- return -1;
-
- disasm = disassemble(insn, len, rip,
- flags & KVM_EMUL_INSN_F_CR0_PE,
- flags & KVM_EMUL_INSN_F_EFL_VM,
- flags & KVM_EMUL_INSN_F_CS_D,
- flags & KVM_EMUL_INSN_F_CS_L);
-
- trace_seq_printf(s, "%llx:%llx: %s%s", csbase, rip, disasm,
- failed ? " FAIL" : "");
- return 0;
-}
-
-
-static int kvm_nested_vmexit_inject_handler(struct trace_seq *s, struct tep_record *record,
- struct tep_event *event, void *context)
-{
- if (print_exit_reason(s, record, event, "exit_code") < 0)
- return -1;
-
- tep_print_num_field(s, " info1 %llx", event, "exit_info1", record, 1);
- tep_print_num_field(s, " info2 %llx", event, "exit_info2", record, 1);
- tep_print_num_field(s, " int_info %llx", event, "exit_int_info", record, 1);
- tep_print_num_field(s, " int_info_err %llx", event, "exit_int_info_err", record, 1);
-
- return 0;
-}
-
-static int kvm_nested_vmexit_handler(struct trace_seq *s, struct tep_record *record,
- struct tep_event *event, void *context)
-{
- tep_print_num_field(s, "rip %llx ", event, "rip", record, 1);
-
- return kvm_nested_vmexit_inject_handler(s, record, event, context);
-}
-
-union kvm_mmu_page_role {
- unsigned word;
- struct {
- unsigned level:4;
- unsigned cr4_pae:1;
- unsigned quadrant:2;
- unsigned direct:1;
- unsigned access:3;
- unsigned invalid:1;
- unsigned efer_nx:1;
- unsigned cr0_wp:1;
- unsigned smep_and_not_wp:1;
- unsigned smap_and_not_wp:1;
- unsigned pad_for_nice_hex_output:8;
- unsigned smm:8;
- };
-};
-
-static int kvm_mmu_print_role(struct trace_seq *s, struct tep_record *record,
- struct tep_event *event, void *context)
-{
- unsigned long long val;
- static const char *access_str[] = {
- "---", "--x", "w--", "w-x", "-u-", "-ux", "wu-", "wux"
- };
- union kvm_mmu_page_role role;
-
- if (tep_get_field_val(s, event, "role", record, &val, 1) < 0)
- return -1;
-
- role.word = (int)val;
-
- /*
- * We can only use the structure if file is of the same
- * endianness.
- */
- if (tep_is_file_bigendian(event->tep) ==
- tep_is_local_bigendian(event->tep)) {
-
- trace_seq_printf(s, "%u q%u%s %s%s %spae %snxe %swp%s%s%s",
- role.level,
- role.quadrant,
- role.direct ? " direct" : "",
- access_str[role.access],
- role.invalid ? " invalid" : "",
- role.cr4_pae ? "" : "!",
- role.efer_nx ? "" : "!",
- role.cr0_wp ? "" : "!",
- role.smep_and_not_wp ? " smep" : "",
- role.smap_and_not_wp ? " smap" : "",
- role.smm ? " smm" : "");
- } else
- trace_seq_printf(s, "WORD: %08x", role.word);
-
- tep_print_num_field(s, " root %u ", event,
- "root_count", record, 1);
-
- if (tep_get_field_val(s, event, "unsync", record, &val, 1) < 0)
- return -1;
-
- trace_seq_printf(s, "%s%c", val ? "unsync" : "sync", 0);
- return 0;
-}
-
-static int kvm_mmu_get_page_handler(struct trace_seq *s,
- struct tep_record *record,
- struct tep_event *event, void *context)
-{
- unsigned long long val;
-
- if (tep_get_field_val(s, event, "created", record, &val, 1) < 0)
- return -1;
-
- trace_seq_printf(s, "%s ", val ? "new" : "existing");
-
- if (tep_get_field_val(s, event, "gfn", record, &val, 1) < 0)
- return -1;
-
- trace_seq_printf(s, "sp gfn %llx ", val);
- return kvm_mmu_print_role(s, record, event, context);
-}
-
-#define PT_WRITABLE_SHIFT 1
-#define PT_WRITABLE_MASK (1ULL << PT_WRITABLE_SHIFT)
-
-static unsigned long long
-process_is_writable_pte(struct trace_seq *s, unsigned long long *args)
-{
- unsigned long pte = args[0];
- return pte & PT_WRITABLE_MASK;
-}
-
-int TEP_PLUGIN_LOADER(struct tep_handle *tep)
-{
- init_disassembler();
-
- tep_register_event_handler(tep, -1, "kvm", "kvm_exit",
- kvm_exit_handler, NULL);
-
- tep_register_event_handler(tep, -1, "kvm", "kvm_emulate_insn",
- kvm_emulate_insn_handler, NULL);
-
- tep_register_event_handler(tep, -1, "kvm", "kvm_nested_vmexit",
- kvm_nested_vmexit_handler, NULL);
-
- tep_register_event_handler(tep, -1, "kvm", "kvm_nested_vmexit_inject",
- kvm_nested_vmexit_inject_handler, NULL);
-
- tep_register_event_handler(tep, -1, "kvmmmu", "kvm_mmu_get_page",
- kvm_mmu_get_page_handler, NULL);
-
- tep_register_event_handler(tep, -1, "kvmmmu", "kvm_mmu_sync_page",
- kvm_mmu_print_role, NULL);
-
- tep_register_event_handler(tep, -1,
- "kvmmmu", "kvm_mmu_unsync_page",
- kvm_mmu_print_role, NULL);
-
- tep_register_event_handler(tep, -1, "kvmmmu", "kvm_mmu_zap_page",
- kvm_mmu_print_role, NULL);
-
- tep_register_event_handler(tep, -1, "kvmmmu",
- "kvm_mmu_prepare_zap_page", kvm_mmu_print_role,
- NULL);
-
- tep_register_print_function(tep,
- process_is_writable_pte,
- TEP_FUNC_ARG_INT,
- "is_writable_pte",
- TEP_FUNC_ARG_LONG,
- TEP_FUNC_ARG_VOID);
- return 0;
-}
-
-void TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
-{
- tep_unregister_event_handler(tep, -1, "kvm", "kvm_exit",
- kvm_exit_handler, NULL);
-
- tep_unregister_event_handler(tep, -1, "kvm", "kvm_emulate_insn",
- kvm_emulate_insn_handler, NULL);
-
- tep_unregister_event_handler(tep, -1, "kvm", "kvm_nested_vmexit",
- kvm_nested_vmexit_handler, NULL);
-
- tep_unregister_event_handler(tep, -1, "kvm", "kvm_nested_vmexit_inject",
- kvm_nested_vmexit_inject_handler, NULL);
-
- tep_unregister_event_handler(tep, -1, "kvmmmu", "kvm_mmu_get_page",
- kvm_mmu_get_page_handler, NULL);
-
- tep_unregister_event_handler(tep, -1, "kvmmmu", "kvm_mmu_sync_page",
- kvm_mmu_print_role, NULL);
-
- tep_unregister_event_handler(tep, -1,
- "kvmmmu", "kvm_mmu_unsync_page",
- kvm_mmu_print_role, NULL);
-
- tep_unregister_event_handler(tep, -1, "kvmmmu", "kvm_mmu_zap_page",
- kvm_mmu_print_role, NULL);
-
- tep_unregister_event_handler(tep, -1, "kvmmmu",
- "kvm_mmu_prepare_zap_page", kvm_mmu_print_role,
- NULL);
-
- tep_unregister_print_function(tep, process_is_writable_pte,
- "is_writable_pte");
-}
+++ /dev/null
-// SPDX-License-Identifier: LGPL-2.1
-/*
- * Copyright (C) 2009 Johannes Berg <johannes@sipsolutions.net>
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "event-parse.h"
-#include "trace-seq.h"
-
-#define INDENT 65
-
-static void print_string(struct trace_seq *s, struct tep_event *event,
- const char *name, const void *data)
-{
- struct tep_format_field *f = tep_find_field(event, name);
- int offset;
- int length;
-
- if (!f) {
- trace_seq_printf(s, "NOTFOUND:%s", name);
- return;
- }
-
- offset = f->offset;
- length = f->size;
-
- if (!strncmp(f->type, "__data_loc", 10)) {
- unsigned long long v;
- if (tep_read_number_field(f, data, &v)) {
- trace_seq_printf(s, "invalid_data_loc");
- return;
- }
- offset = v & 0xffff;
- length = v >> 16;
- }
-
- trace_seq_printf(s, "%.*s", length, (char *)data + offset);
-}
-
-#define SF(fn) tep_print_num_field(s, fn ":%d", event, fn, record, 0)
-#define SFX(fn) tep_print_num_field(s, fn ":%#x", event, fn, record, 0)
-#define SP() trace_seq_putc(s, ' ')
-
-static int drv_bss_info_changed(struct trace_seq *s,
- struct tep_record *record,
- struct tep_event *event, void *context)
-{
- void *data = record->data;
-
- print_string(s, event, "wiphy_name", data);
- trace_seq_printf(s, " vif:");
- print_string(s, event, "vif_name", data);
- tep_print_num_field(s, "(%d)", event, "vif_type", record, 1);
-
- trace_seq_printf(s, "\n%*s", INDENT, "");
- SF("assoc"); SP();
- SF("aid"); SP();
- SF("cts"); SP();
- SF("shortpre"); SP();
- SF("shortslot"); SP();
- SF("dtimper"); SP();
- trace_seq_printf(s, "\n%*s", INDENT, "");
- SF("bcnint"); SP();
- SFX("assoc_cap"); SP();
- SFX("basic_rates"); SP();
- SF("enable_beacon");
- trace_seq_printf(s, "\n%*s", INDENT, "");
- SF("ht_operation_mode");
-
- return 0;
-}
-
-int TEP_PLUGIN_LOADER(struct tep_handle *tep)
-{
- tep_register_event_handler(tep, -1, "mac80211",
- "drv_bss_info_changed",
- drv_bss_info_changed, NULL);
- return 0;
-}
-
-void TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
-{
- tep_unregister_event_handler(tep, -1, "mac80211",
- "drv_bss_info_changed",
- drv_bss_info_changed, NULL);
-}
+++ /dev/null
-// SPDX-License-Identifier: LGPL-2.1
-/*
- * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "event-parse.h"
-#include "trace-seq.h"
-
-static void write_state(struct trace_seq *s, int val)
-{
- const char states[] = "SDTtZXxW";
- int found = 0;
- int i;
-
- for (i = 0; i < (sizeof(states) - 1); i++) {
- if (!(val & (1 << i)))
- continue;
-
- if (found)
- trace_seq_putc(s, '|');
-
- found = 1;
- trace_seq_putc(s, states[i]);
- }
-
- if (!found)
- trace_seq_putc(s, 'R');
-}
-
-static void write_and_save_comm(struct tep_format_field *field,
- struct tep_record *record,
- struct trace_seq *s, int pid)
-{
- const char *comm;
- int len;
-
- comm = (char *)(record->data + field->offset);
- len = s->len;
- trace_seq_printf(s, "%.*s",
- field->size, comm);
-
- /* make sure the comm has a \0 at the end. */
- trace_seq_terminate(s);
- comm = &s->buffer[len];
-
- /* Help out the comm to ids. This will handle dups */
- tep_register_comm(field->event->tep, comm, pid);
-}
-
-static int sched_wakeup_handler(struct trace_seq *s,
- struct tep_record *record,
- struct tep_event *event, void *context)
-{
- struct tep_format_field *field;
- unsigned long long val;
-
- if (tep_get_field_val(s, event, "pid", record, &val, 1))
- return trace_seq_putc(s, '!');
-
- field = tep_find_any_field(event, "comm");
- if (field) {
- write_and_save_comm(field, record, s, val);
- trace_seq_putc(s, ':');
- }
- trace_seq_printf(s, "%lld", val);
-
- if (tep_get_field_val(s, event, "prio", record, &val, 0) == 0)
- trace_seq_printf(s, " [%lld]", val);
-
- if (tep_get_field_val(s, event, "success", record, &val, 1) == 0)
- trace_seq_printf(s, " success=%lld", val);
-
- if (tep_get_field_val(s, event, "target_cpu", record, &val, 0) == 0)
- trace_seq_printf(s, " CPU:%03llu", val);
-
- return 0;
-}
-
-static int sched_switch_handler(struct trace_seq *s,
- struct tep_record *record,
- struct tep_event *event, void *context)
-{
- struct tep_format_field *field;
- unsigned long long val;
-
- if (tep_get_field_val(s, event, "prev_pid", record, &val, 1))
- return trace_seq_putc(s, '!');
-
- field = tep_find_any_field(event, "prev_comm");
- if (field) {
- write_and_save_comm(field, record, s, val);
- trace_seq_putc(s, ':');
- }
- trace_seq_printf(s, "%lld ", val);
-
- if (tep_get_field_val(s, event, "prev_prio", record, &val, 0) == 0)
- trace_seq_printf(s, "[%d] ", (int) val);
-
- if (tep_get_field_val(s, event, "prev_state", record, &val, 0) == 0)
- write_state(s, val);
-
- trace_seq_puts(s, " ==> ");
-
- if (tep_get_field_val(s, event, "next_pid", record, &val, 1))
- return trace_seq_putc(s, '!');
-
- field = tep_find_any_field(event, "next_comm");
- if (field) {
- write_and_save_comm(field, record, s, val);
- trace_seq_putc(s, ':');
- }
- trace_seq_printf(s, "%lld", val);
-
- if (tep_get_field_val(s, event, "next_prio", record, &val, 0) == 0)
- trace_seq_printf(s, " [%d]", (int) val);
-
- return 0;
-}
-
-int TEP_PLUGIN_LOADER(struct tep_handle *tep)
-{
- tep_register_event_handler(tep, -1, "sched", "sched_switch",
- sched_switch_handler, NULL);
-
- tep_register_event_handler(tep, -1, "sched", "sched_wakeup",
- sched_wakeup_handler, NULL);
-
- tep_register_event_handler(tep, -1, "sched", "sched_wakeup_new",
- sched_wakeup_handler, NULL);
- return 0;
-}
-
-void TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
-{
- tep_unregister_event_handler(tep, -1, "sched", "sched_switch",
- sched_switch_handler, NULL);
-
- tep_unregister_event_handler(tep, -1, "sched", "sched_wakeup",
- sched_wakeup_handler, NULL);
-
- tep_unregister_event_handler(tep, -1, "sched", "sched_wakeup_new",
- sched_wakeup_handler, NULL);
-}
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-#include <stdio.h>
-#include <string.h>
-#include <inttypes.h>
-#include "event-parse.h"
-#include "trace-seq.h"
-
-typedef unsigned long sector_t;
-typedef uint64_t u64;
-typedef unsigned int u32;
-
-/*
- * SCSI opcodes
- */
-#define TEST_UNIT_READY 0x00
-#define REZERO_UNIT 0x01
-#define REQUEST_SENSE 0x03
-#define FORMAT_UNIT 0x04
-#define READ_BLOCK_LIMITS 0x05
-#define REASSIGN_BLOCKS 0x07
-#define INITIALIZE_ELEMENT_STATUS 0x07
-#define READ_6 0x08
-#define WRITE_6 0x0a
-#define SEEK_6 0x0b
-#define READ_REVERSE 0x0f
-#define WRITE_FILEMARKS 0x10
-#define SPACE 0x11
-#define INQUIRY 0x12
-#define RECOVER_BUFFERED_DATA 0x14
-#define MODE_SELECT 0x15
-#define RESERVE 0x16
-#define RELEASE 0x17
-#define COPY 0x18
-#define ERASE 0x19
-#define MODE_SENSE 0x1a
-#define START_STOP 0x1b
-#define RECEIVE_DIAGNOSTIC 0x1c
-#define SEND_DIAGNOSTIC 0x1d
-#define ALLOW_MEDIUM_REMOVAL 0x1e
-
-#define READ_FORMAT_CAPACITIES 0x23
-#define SET_WINDOW 0x24
-#define READ_CAPACITY 0x25
-#define READ_10 0x28
-#define WRITE_10 0x2a
-#define SEEK_10 0x2b
-#define POSITION_TO_ELEMENT 0x2b
-#define WRITE_VERIFY 0x2e
-#define VERIFY 0x2f
-#define SEARCH_HIGH 0x30
-#define SEARCH_EQUAL 0x31
-#define SEARCH_LOW 0x32
-#define SET_LIMITS 0x33
-#define PRE_FETCH 0x34
-#define READ_POSITION 0x34
-#define SYNCHRONIZE_CACHE 0x35
-#define LOCK_UNLOCK_CACHE 0x36
-#define READ_DEFECT_DATA 0x37
-#define MEDIUM_SCAN 0x38
-#define COMPARE 0x39
-#define COPY_VERIFY 0x3a
-#define WRITE_BUFFER 0x3b
-#define READ_BUFFER 0x3c
-#define UPDATE_BLOCK 0x3d
-#define READ_LONG 0x3e
-#define WRITE_LONG 0x3f
-#define CHANGE_DEFINITION 0x40
-#define WRITE_SAME 0x41
-#define UNMAP 0x42
-#define READ_TOC 0x43
-#define READ_HEADER 0x44
-#define GET_EVENT_STATUS_NOTIFICATION 0x4a
-#define LOG_SELECT 0x4c
-#define LOG_SENSE 0x4d
-#define XDWRITEREAD_10 0x53
-#define MODE_SELECT_10 0x55
-#define RESERVE_10 0x56
-#define RELEASE_10 0x57
-#define MODE_SENSE_10 0x5a
-#define PERSISTENT_RESERVE_IN 0x5e
-#define PERSISTENT_RESERVE_OUT 0x5f
-#define VARIABLE_LENGTH_CMD 0x7f
-#define REPORT_LUNS 0xa0
-#define SECURITY_PROTOCOL_IN 0xa2
-#define MAINTENANCE_IN 0xa3
-#define MAINTENANCE_OUT 0xa4
-#define MOVE_MEDIUM 0xa5
-#define EXCHANGE_MEDIUM 0xa6
-#define READ_12 0xa8
-#define SERVICE_ACTION_OUT_12 0xa9
-#define WRITE_12 0xaa
-#define SERVICE_ACTION_IN_12 0xab
-#define WRITE_VERIFY_12 0xae
-#define VERIFY_12 0xaf
-#define SEARCH_HIGH_12 0xb0
-#define SEARCH_EQUAL_12 0xb1
-#define SEARCH_LOW_12 0xb2
-#define SECURITY_PROTOCOL_OUT 0xb5
-#define READ_ELEMENT_STATUS 0xb8
-#define SEND_VOLUME_TAG 0xb6
-#define WRITE_LONG_2 0xea
-#define EXTENDED_COPY 0x83
-#define RECEIVE_COPY_RESULTS 0x84
-#define ACCESS_CONTROL_IN 0x86
-#define ACCESS_CONTROL_OUT 0x87
-#define READ_16 0x88
-#define WRITE_16 0x8a
-#define READ_ATTRIBUTE 0x8c
-#define WRITE_ATTRIBUTE 0x8d
-#define VERIFY_16 0x8f
-#define SYNCHRONIZE_CACHE_16 0x91
-#define WRITE_SAME_16 0x93
-#define SERVICE_ACTION_BIDIRECTIONAL 0x9d
-#define SERVICE_ACTION_IN_16 0x9e
-#define SERVICE_ACTION_OUT_16 0x9f
-/* values for service action in */
-#define SAI_READ_CAPACITY_16 0x10
-#define SAI_GET_LBA_STATUS 0x12
-/* values for VARIABLE_LENGTH_CMD service action codes
- * see spc4r17 Section D.3.5, table D.7 and D.8 */
-#define VLC_SA_RECEIVE_CREDENTIAL 0x1800
-/* values for maintenance in */
-#define MI_REPORT_IDENTIFYING_INFORMATION 0x05
-#define MI_REPORT_TARGET_PGS 0x0a
-#define MI_REPORT_ALIASES 0x0b
-#define MI_REPORT_SUPPORTED_OPERATION_CODES 0x0c
-#define MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS 0x0d
-#define MI_REPORT_PRIORITY 0x0e
-#define MI_REPORT_TIMESTAMP 0x0f
-#define MI_MANAGEMENT_PROTOCOL_IN 0x10
-/* value for MI_REPORT_TARGET_PGS ext header */
-#define MI_EXT_HDR_PARAM_FMT 0x20
-/* values for maintenance out */
-#define MO_SET_IDENTIFYING_INFORMATION 0x06
-#define MO_SET_TARGET_PGS 0x0a
-#define MO_CHANGE_ALIASES 0x0b
-#define MO_SET_PRIORITY 0x0e
-#define MO_SET_TIMESTAMP 0x0f
-#define MO_MANAGEMENT_PROTOCOL_OUT 0x10
-/* values for variable length command */
-#define XDREAD_32 0x03
-#define XDWRITE_32 0x04
-#define XPWRITE_32 0x06
-#define XDWRITEREAD_32 0x07
-#define READ_32 0x09
-#define VERIFY_32 0x0a
-#define WRITE_32 0x0b
-#define WRITE_SAME_32 0x0d
-
-#define SERVICE_ACTION16(cdb) (cdb[1] & 0x1f)
-#define SERVICE_ACTION32(cdb) ((cdb[8] << 8) | cdb[9])
-
-static const char *
-scsi_trace_misc(struct trace_seq *, unsigned char *, int);
-
-static const char *
-scsi_trace_rw6(struct trace_seq *p, unsigned char *cdb, int len)
-{
- const char *ret = p->buffer + p->len;
- sector_t lba = 0, txlen = 0;
-
- lba |= ((cdb[1] & 0x1F) << 16);
- lba |= (cdb[2] << 8);
- lba |= cdb[3];
- txlen = cdb[4];
-
- trace_seq_printf(p, "lba=%llu txlen=%llu",
- (unsigned long long)lba, (unsigned long long)txlen);
- trace_seq_putc(p, 0);
- return ret;
-}
-
-static const char *
-scsi_trace_rw10(struct trace_seq *p, unsigned char *cdb, int len)
-{
- const char *ret = p->buffer + p->len;
- sector_t lba = 0, txlen = 0;
-
- lba |= (cdb[2] << 24);
- lba |= (cdb[3] << 16);
- lba |= (cdb[4] << 8);
- lba |= cdb[5];
- txlen |= (cdb[7] << 8);
- txlen |= cdb[8];
-
- trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
- (unsigned long long)lba, (unsigned long long)txlen,
- cdb[1] >> 5);
-
- if (cdb[0] == WRITE_SAME)
- trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1);
-
- trace_seq_putc(p, 0);
- return ret;
-}
-
-static const char *
-scsi_trace_rw12(struct trace_seq *p, unsigned char *cdb, int len)
-{
- const char *ret = p->buffer + p->len;
- sector_t lba = 0, txlen = 0;
-
- lba |= (cdb[2] << 24);
- lba |= (cdb[3] << 16);
- lba |= (cdb[4] << 8);
- lba |= cdb[5];
- txlen |= (cdb[6] << 24);
- txlen |= (cdb[7] << 16);
- txlen |= (cdb[8] << 8);
- txlen |= cdb[9];
-
- trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
- (unsigned long long)lba, (unsigned long long)txlen,
- cdb[1] >> 5);
- trace_seq_putc(p, 0);
- return ret;
-}
-
-static const char *
-scsi_trace_rw16(struct trace_seq *p, unsigned char *cdb, int len)
-{
- const char *ret = p->buffer + p->len;
- sector_t lba = 0, txlen = 0;
-
- lba |= ((u64)cdb[2] << 56);
- lba |= ((u64)cdb[3] << 48);
- lba |= ((u64)cdb[4] << 40);
- lba |= ((u64)cdb[5] << 32);
- lba |= (cdb[6] << 24);
- lba |= (cdb[7] << 16);
- lba |= (cdb[8] << 8);
- lba |= cdb[9];
- txlen |= (cdb[10] << 24);
- txlen |= (cdb[11] << 16);
- txlen |= (cdb[12] << 8);
- txlen |= cdb[13];
-
- trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
- (unsigned long long)lba, (unsigned long long)txlen,
- cdb[1] >> 5);
-
- if (cdb[0] == WRITE_SAME_16)
- trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1);
-
- trace_seq_putc(p, 0);
- return ret;
-}
-
-static const char *
-scsi_trace_rw32(struct trace_seq *p, unsigned char *cdb, int len)
-{
- const char *ret = p->buffer + p->len, *cmd;
- sector_t lba = 0, txlen = 0;
- u32 ei_lbrt = 0;
-
- switch (SERVICE_ACTION32(cdb)) {
- case READ_32:
- cmd = "READ";
- break;
- case VERIFY_32:
- cmd = "VERIFY";
- break;
- case WRITE_32:
- cmd = "WRITE";
- break;
- case WRITE_SAME_32:
- cmd = "WRITE_SAME";
- break;
- default:
- trace_seq_printf(p, "UNKNOWN");
- goto out;
- }
-
- lba |= ((u64)cdb[12] << 56);
- lba |= ((u64)cdb[13] << 48);
- lba |= ((u64)cdb[14] << 40);
- lba |= ((u64)cdb[15] << 32);
- lba |= (cdb[16] << 24);
- lba |= (cdb[17] << 16);
- lba |= (cdb[18] << 8);
- lba |= cdb[19];
- ei_lbrt |= (cdb[20] << 24);
- ei_lbrt |= (cdb[21] << 16);
- ei_lbrt |= (cdb[22] << 8);
- ei_lbrt |= cdb[23];
- txlen |= (cdb[28] << 24);
- txlen |= (cdb[29] << 16);
- txlen |= (cdb[30] << 8);
- txlen |= cdb[31];
-
- trace_seq_printf(p, "%s_32 lba=%llu txlen=%llu protect=%u ei_lbrt=%u",
- cmd, (unsigned long long)lba,
- (unsigned long long)txlen, cdb[10] >> 5, ei_lbrt);
-
- if (SERVICE_ACTION32(cdb) == WRITE_SAME_32)
- trace_seq_printf(p, " unmap=%u", cdb[10] >> 3 & 1);
-
-out:
- trace_seq_putc(p, 0);
- return ret;
-}
-
-static const char *
-scsi_trace_unmap(struct trace_seq *p, unsigned char *cdb, int len)
-{
- const char *ret = p->buffer + p->len;
- unsigned int regions = cdb[7] << 8 | cdb[8];
-
- trace_seq_printf(p, "regions=%u", (regions - 8) / 16);
- trace_seq_putc(p, 0);
- return ret;
-}
-
-static const char *
-scsi_trace_service_action_in(struct trace_seq *p, unsigned char *cdb, int len)
-{
- const char *ret = p->buffer + p->len, *cmd;
- sector_t lba = 0;
- u32 alloc_len = 0;
-
- switch (SERVICE_ACTION16(cdb)) {
- case SAI_READ_CAPACITY_16:
- cmd = "READ_CAPACITY_16";
- break;
- case SAI_GET_LBA_STATUS:
- cmd = "GET_LBA_STATUS";
- break;
- default:
- trace_seq_printf(p, "UNKNOWN");
- goto out;
- }
-
- lba |= ((u64)cdb[2] << 56);
- lba |= ((u64)cdb[3] << 48);
- lba |= ((u64)cdb[4] << 40);
- lba |= ((u64)cdb[5] << 32);
- lba |= (cdb[6] << 24);
- lba |= (cdb[7] << 16);
- lba |= (cdb[8] << 8);
- lba |= cdb[9];
- alloc_len |= (cdb[10] << 24);
- alloc_len |= (cdb[11] << 16);
- alloc_len |= (cdb[12] << 8);
- alloc_len |= cdb[13];
-
- trace_seq_printf(p, "%s lba=%llu alloc_len=%u", cmd,
- (unsigned long long)lba, alloc_len);
-
-out:
- trace_seq_putc(p, 0);
- return ret;
-}
-
-static const char *
-scsi_trace_varlen(struct trace_seq *p, unsigned char *cdb, int len)
-{
- switch (SERVICE_ACTION32(cdb)) {
- case READ_32:
- case VERIFY_32:
- case WRITE_32:
- case WRITE_SAME_32:
- return scsi_trace_rw32(p, cdb, len);
- default:
- return scsi_trace_misc(p, cdb, len);
- }
-}
-
-static const char *
-scsi_trace_misc(struct trace_seq *p, unsigned char *cdb, int len)
-{
- const char *ret = p->buffer + p->len;
-
- trace_seq_printf(p, "-");
- trace_seq_putc(p, 0);
- return ret;
-}
-
-const char *
-scsi_trace_parse_cdb(struct trace_seq *p, unsigned char *cdb, int len)
-{
- switch (cdb[0]) {
- case READ_6:
- case WRITE_6:
- return scsi_trace_rw6(p, cdb, len);
- case READ_10:
- case VERIFY:
- case WRITE_10:
- case WRITE_SAME:
- return scsi_trace_rw10(p, cdb, len);
- case READ_12:
- case VERIFY_12:
- case WRITE_12:
- return scsi_trace_rw12(p, cdb, len);
- case READ_16:
- case VERIFY_16:
- case WRITE_16:
- case WRITE_SAME_16:
- return scsi_trace_rw16(p, cdb, len);
- case UNMAP:
- return scsi_trace_unmap(p, cdb, len);
- case SERVICE_ACTION_IN_16:
- return scsi_trace_service_action_in(p, cdb, len);
- case VARIABLE_LENGTH_CMD:
- return scsi_trace_varlen(p, cdb, len);
- default:
- return scsi_trace_misc(p, cdb, len);
- }
-}
-
-unsigned long long process_scsi_trace_parse_cdb(struct trace_seq *s,
- unsigned long long *args)
-{
- scsi_trace_parse_cdb(s, (unsigned char *) (unsigned long) args[1], args[2]);
- return 0;
-}
-
-int TEP_PLUGIN_LOADER(struct tep_handle *tep)
-{
- tep_register_print_function(tep,
- process_scsi_trace_parse_cdb,
- TEP_FUNC_ARG_STRING,
- "scsi_trace_parse_cdb",
- TEP_FUNC_ARG_PTR,
- TEP_FUNC_ARG_PTR,
- TEP_FUNC_ARG_INT,
- TEP_FUNC_ARG_VOID);
- return 0;
-}
-
-void TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
-{
- tep_unregister_print_function(tep, process_scsi_trace_parse_cdb,
- "scsi_trace_parse_cdb");
-}
+++ /dev/null
-// SPDX-License-Identifier: LGPL-2.1
-/*
- * Copyright (C) 2015 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "event-parse.h"
-
-enum tlb_flush_reason {
- TLB_FLUSH_ON_TASK_SWITCH,
- TLB_REMOTE_SHOOTDOWN,
- TLB_LOCAL_SHOOTDOWN,
- TLB_LOCAL_MM_SHOOTDOWN,
- NR_TLB_FLUSH_REASONS,
-};
-
-static int tlb_flush_handler(struct trace_seq *s, struct tep_record *record,
- struct tep_event *event, void *context)
-{
- unsigned long long val;
-
- trace_seq_printf(s, "pages=");
-
- tep_print_num_field(s, "%ld", event, "pages", record, 1);
-
- if (tep_get_field_val(s, event, "reason", record, &val, 1) < 0)
- return -1;
-
- trace_seq_puts(s, " reason=");
-
- switch (val) {
- case TLB_FLUSH_ON_TASK_SWITCH:
- trace_seq_puts(s, "flush on task switch");
- break;
- case TLB_REMOTE_SHOOTDOWN:
- trace_seq_puts(s, "remote shootdown");
- break;
- case TLB_LOCAL_SHOOTDOWN:
- trace_seq_puts(s, "local shootdown");
- break;
- case TLB_LOCAL_MM_SHOOTDOWN:
- trace_seq_puts(s, "local mm shootdown");
- break;
- }
-
- trace_seq_printf(s, " (%lld)", val);
-
- return 0;
-}
-
-int TEP_PLUGIN_LOADER(struct tep_handle *tep)
-{
- tep_register_event_handler(tep, -1, "tlb", "tlb_flush",
- tlb_flush_handler, NULL);
-
- return 0;
-}
-
-void TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
-{
- tep_unregister_event_handler(tep, -1,
- "tlb", "tlb_flush",
- tlb_flush_handler, NULL);
-}
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "event-parse.h"
-#include "trace-seq.h"
-
-#define __HYPERVISOR_set_trap_table 0
-#define __HYPERVISOR_mmu_update 1
-#define __HYPERVISOR_set_gdt 2
-#define __HYPERVISOR_stack_switch 3
-#define __HYPERVISOR_set_callbacks 4
-#define __HYPERVISOR_fpu_taskswitch 5
-#define __HYPERVISOR_sched_op_compat 6
-#define __HYPERVISOR_dom0_op 7
-#define __HYPERVISOR_set_debugreg 8
-#define __HYPERVISOR_get_debugreg 9
-#define __HYPERVISOR_update_descriptor 10
-#define __HYPERVISOR_memory_op 12
-#define __HYPERVISOR_multicall 13
-#define __HYPERVISOR_update_va_mapping 14
-#define __HYPERVISOR_set_timer_op 15
-#define __HYPERVISOR_event_channel_op_compat 16
-#define __HYPERVISOR_xen_version 17
-#define __HYPERVISOR_console_io 18
-#define __HYPERVISOR_physdev_op_compat 19
-#define __HYPERVISOR_grant_table_op 20
-#define __HYPERVISOR_vm_assist 21
-#define __HYPERVISOR_update_va_mapping_otherdomain 22
-#define __HYPERVISOR_iret 23 /* x86 only */
-#define __HYPERVISOR_vcpu_op 24
-#define __HYPERVISOR_set_segment_base 25 /* x86/64 only */
-#define __HYPERVISOR_mmuext_op 26
-#define __HYPERVISOR_acm_op 27
-#define __HYPERVISOR_nmi_op 28
-#define __HYPERVISOR_sched_op 29
-#define __HYPERVISOR_callback_op 30
-#define __HYPERVISOR_xenoprof_op 31
-#define __HYPERVISOR_event_channel_op 32
-#define __HYPERVISOR_physdev_op 33
-#define __HYPERVISOR_hvm_op 34
-#define __HYPERVISOR_tmem_op 38
-
-/* Architecture-specific hypercall definitions. */
-#define __HYPERVISOR_arch_0 48
-#define __HYPERVISOR_arch_1 49
-#define __HYPERVISOR_arch_2 50
-#define __HYPERVISOR_arch_3 51
-#define __HYPERVISOR_arch_4 52
-#define __HYPERVISOR_arch_5 53
-#define __HYPERVISOR_arch_6 54
-#define __HYPERVISOR_arch_7 55
-
-#define N(x) [__HYPERVISOR_##x] = "("#x")"
-static const char *xen_hypercall_names[] = {
- N(set_trap_table),
- N(mmu_update),
- N(set_gdt),
- N(stack_switch),
- N(set_callbacks),
- N(fpu_taskswitch),
- N(sched_op_compat),
- N(dom0_op),
- N(set_debugreg),
- N(get_debugreg),
- N(update_descriptor),
- N(memory_op),
- N(multicall),
- N(update_va_mapping),
- N(set_timer_op),
- N(event_channel_op_compat),
- N(xen_version),
- N(console_io),
- N(physdev_op_compat),
- N(grant_table_op),
- N(vm_assist),
- N(update_va_mapping_otherdomain),
- N(iret),
- N(vcpu_op),
- N(set_segment_base),
- N(mmuext_op),
- N(acm_op),
- N(nmi_op),
- N(sched_op),
- N(callback_op),
- N(xenoprof_op),
- N(event_channel_op),
- N(physdev_op),
- N(hvm_op),
-
-/* Architecture-specific hypercall definitions. */
- N(arch_0),
- N(arch_1),
- N(arch_2),
- N(arch_3),
- N(arch_4),
- N(arch_5),
- N(arch_6),
- N(arch_7),
-};
-#undef N
-
-#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
-
-static const char *xen_hypercall_name(unsigned op)
-{
- if (op < ARRAY_SIZE(xen_hypercall_names) &&
- xen_hypercall_names[op] != NULL)
- return xen_hypercall_names[op];
-
- return "";
-}
-
-unsigned long long process_xen_hypercall_name(struct trace_seq *s,
- unsigned long long *args)
-{
- unsigned int op = args[0];
-
- trace_seq_printf(s, "%s", xen_hypercall_name(op));
- return 0;
-}
-
-int TEP_PLUGIN_LOADER(struct tep_handle *tep)
-{
- tep_register_print_function(tep,
- process_xen_hypercall_name,
- TEP_FUNC_ARG_STRING,
- "xen_hypercall_name",
- TEP_FUNC_ARG_INT,
- TEP_FUNC_ARG_VOID);
- return 0;
-}
-
-void TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
-{
- tep_unregister_print_function(tep, process_xen_hypercall_name,
- "xen_hypercall_name");
-}
+++ /dev/null
-// SPDX-License-Identifier: LGPL-2.1
-#undef _GNU_SOURCE
-#include <string.h>
-#include <stdio.h>
-
-#include "event-parse.h"
-
-#undef _PE
-#define _PE(code, str) str
-static const char * const tep_error_str[] = {
- TEP_ERRORS
-};
-#undef _PE
-
-/*
- * The tools so far have been using the strerror_r() GNU variant, that returns
- * a string, be it the buffer passed or something else.
- *
- * But that, besides being tricky in cases where we expect that the function
- * using strerror_r() returns the error formatted in a provided buffer (we have
- * to check if it returned something else and copy that instead), breaks the
- * build on systems not using glibc, like Alpine Linux, where musl libc is
- * used.
- *
- * So, introduce yet another wrapper, str_error_r(), that has the GNU
- * interface, but uses the portable XSI variant of strerror_r(), so that users
- * rest asured that the provided buffer is used and it is what is returned.
- */
-int tep_strerror(struct tep_handle *tep __maybe_unused,
- enum tep_errno errnum, char *buf, size_t buflen)
-{
- const char *msg;
- int idx;
-
- if (!buflen)
- return 0;
-
- if (errnum >= 0) {
- int err = strerror_r(errnum, buf, buflen);
- buf[buflen - 1] = 0;
- return err;
- }
-
- if (errnum <= __TEP_ERRNO__START ||
- errnum >= __TEP_ERRNO__END)
- return -1;
-
- idx = errnum - __TEP_ERRNO__START - 1;
- msg = tep_error_str[idx];
- snprintf(buf, buflen, "%s", msg);
-
- return 0;
-}
+++ /dev/null
-// SPDX-License-Identifier: LGPL-2.1
-/*
- * Copyright (C) 2009 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
- *
- */
-#include "trace-seq.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdarg.h>
-
-#include <asm/bug.h>
-#include "event-parse.h"
-#include "event-utils.h"
-
-/*
- * The TRACE_SEQ_POISON is to catch the use of using
- * a trace_seq structure after it was destroyed.
- */
-#define TRACE_SEQ_POISON ((void *)0xdeadbeef)
-#define TRACE_SEQ_CHECK(s) \
-do { \
- if (WARN_ONCE((s)->buffer == TRACE_SEQ_POISON, \
- "Usage of trace_seq after it was destroyed")) \
- (s)->state = TRACE_SEQ__BUFFER_POISONED; \
-} while (0)
-
-#define TRACE_SEQ_CHECK_RET_N(s, n) \
-do { \
- TRACE_SEQ_CHECK(s); \
- if ((s)->state != TRACE_SEQ__GOOD) \
- return n; \
-} while (0)
-
-#define TRACE_SEQ_CHECK_RET(s) TRACE_SEQ_CHECK_RET_N(s, )
-#define TRACE_SEQ_CHECK_RET0(s) TRACE_SEQ_CHECK_RET_N(s, 0)
-
-/**
- * trace_seq_init - initialize the trace_seq structure
- * @s: a pointer to the trace_seq structure to initialize
- */
-void trace_seq_init(struct trace_seq *s)
-{
- s->len = 0;
- s->readpos = 0;
- s->buffer_size = TRACE_SEQ_BUF_SIZE;
- s->buffer = malloc(s->buffer_size);
- if (s->buffer != NULL)
- s->state = TRACE_SEQ__GOOD;
- else
- s->state = TRACE_SEQ__MEM_ALLOC_FAILED;
-}
-
-/**
- * trace_seq_reset - re-initialize the trace_seq structure
- * @s: a pointer to the trace_seq structure to reset
- */
-void trace_seq_reset(struct trace_seq *s)
-{
- if (!s)
- return;
- TRACE_SEQ_CHECK(s);
- s->len = 0;
- s->readpos = 0;
-}
-
-/**
- * trace_seq_destroy - free up memory of a trace_seq
- * @s: a pointer to the trace_seq to free the buffer
- *
- * Only frees the buffer, not the trace_seq struct itself.
- */
-void trace_seq_destroy(struct trace_seq *s)
-{
- if (!s)
- return;
- TRACE_SEQ_CHECK_RET(s);
- free(s->buffer);
- s->buffer = TRACE_SEQ_POISON;
-}
-
-static void expand_buffer(struct trace_seq *s)
-{
- char *buf;
-
- buf = realloc(s->buffer, s->buffer_size + TRACE_SEQ_BUF_SIZE);
- if (WARN_ONCE(!buf, "Can't allocate trace_seq buffer memory")) {
- s->state = TRACE_SEQ__MEM_ALLOC_FAILED;
- return;
- }
-
- s->buffer = buf;
- s->buffer_size += TRACE_SEQ_BUF_SIZE;
-}
-
-/**
- * trace_seq_printf - sequence printing of trace information
- * @s: trace sequence descriptor
- * @fmt: printf format string
- *
- * It returns 0 if the trace oversizes the buffer's free
- * space, the number of characters printed, or a negative
- * value in case of an error.
- *
- * The tracer may use either sequence operations or its own
- * copy to user routines. To simplify formating of a trace
- * trace_seq_printf is used to store strings into a special
- * buffer (@s). Then the output may be either used by
- * the sequencer or pulled into another buffer.
- */
-int
-trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
-{
- va_list ap;
- int len;
- int ret;
-
- try_again:
- TRACE_SEQ_CHECK_RET0(s);
-
- len = (s->buffer_size - 1) - s->len;
-
- va_start(ap, fmt);
- ret = vsnprintf(s->buffer + s->len, len, fmt, ap);
- va_end(ap);
-
- if (ret >= len) {
- expand_buffer(s);
- goto try_again;
- }
-
- if (ret > 0)
- s->len += ret;
-
- return ret;
-}
-
-/**
- * trace_seq_vprintf - sequence printing of trace information
- * @s: trace sequence descriptor
- * @fmt: printf format string
- *
- * It returns 0 if the trace oversizes the buffer's free
- * space, the number of characters printed, or a negative
- * value in case of an error.
- * *
- * The tracer may use either sequence operations or its own
- * copy to user routines. To simplify formating of a trace
- * trace_seq_printf is used to store strings into a special
- * buffer (@s). Then the output may be either used by
- * the sequencer or pulled into another buffer.
- */
-int
-trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args)
-{
- int len;
- int ret;
-
- try_again:
- TRACE_SEQ_CHECK_RET0(s);
-
- len = (s->buffer_size - 1) - s->len;
-
- ret = vsnprintf(s->buffer + s->len, len, fmt, args);
-
- if (ret >= len) {
- expand_buffer(s);
- goto try_again;
- }
-
- if (ret > 0)
- s->len += ret;
-
- return ret;
-}
-
-/**
- * trace_seq_puts - trace sequence printing of simple string
- * @s: trace sequence descriptor
- * @str: simple string to record
- *
- * The tracer may use either the sequence operations or its own
- * copy to user routines. This function records a simple string
- * into a special buffer (@s) for later retrieval by a sequencer
- * or other mechanism.
- */
-int trace_seq_puts(struct trace_seq *s, const char *str)
-{
- int len;
-
- TRACE_SEQ_CHECK_RET0(s);
-
- len = strlen(str);
-
- while (len > ((s->buffer_size - 1) - s->len))
- expand_buffer(s);
-
- TRACE_SEQ_CHECK_RET0(s);
-
- memcpy(s->buffer + s->len, str, len);
- s->len += len;
-
- return len;
-}
-
-int trace_seq_putc(struct trace_seq *s, unsigned char c)
-{
- TRACE_SEQ_CHECK_RET0(s);
-
- while (s->len >= (s->buffer_size - 1))
- expand_buffer(s);
-
- TRACE_SEQ_CHECK_RET0(s);
-
- s->buffer[s->len++] = c;
-
- return 1;
-}
-
-void trace_seq_terminate(struct trace_seq *s)
-{
- TRACE_SEQ_CHECK_RET(s);
-
- /* There's always one character left on the buffer */
- s->buffer[s->len] = 0;
-}
-
-int trace_seq_do_fprintf(struct trace_seq *s, FILE *fp)
-{
- TRACE_SEQ_CHECK(s);
-
- switch (s->state) {
- case TRACE_SEQ__GOOD:
- return fprintf(fp, "%.*s", s->len, s->buffer);
- case TRACE_SEQ__BUFFER_POISONED:
- fprintf(fp, "%s\n", "Usage of trace_seq after it was destroyed");
- break;
- case TRACE_SEQ__MEM_ALLOC_FAILED:
- fprintf(fp, "%s\n", "Can't allocate trace_seq buffer memory");
- break;
- }
- return -1;
-}
-
-int trace_seq_do_printf(struct trace_seq *s)
-{
- return trace_seq_do_fprintf(s, stdout);
-}
+++ /dev/null
-// SPDX-License-Identifier: LGPL-2.1
-/*
- * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
- *
- */
-
-#ifndef _TRACE_SEQ_H
-#define _TRACE_SEQ_H
-
-#include <stdarg.h>
-#include <stdio.h>
-
-/* ----------------------- trace_seq ----------------------- */
-
-#ifndef TRACE_SEQ_BUF_SIZE
-#define TRACE_SEQ_BUF_SIZE 4096
-#endif
-
-enum trace_seq_fail {
- TRACE_SEQ__GOOD,
- TRACE_SEQ__BUFFER_POISONED,
- TRACE_SEQ__MEM_ALLOC_FAILED,
-};
-
-/*
- * Trace sequences are used to allow a function to call several other functions
- * to create a string of data to use (up to a max of PAGE_SIZE).
- */
-
-struct trace_seq {
- char *buffer;
- unsigned int buffer_size;
- unsigned int len;
- unsigned int readpos;
- enum trace_seq_fail state;
-};
-
-void trace_seq_init(struct trace_seq *s);
-void trace_seq_reset(struct trace_seq *s);
-void trace_seq_destroy(struct trace_seq *s);
-
-extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args)
- __attribute__ ((format (printf, 2, 0)));
-
-extern int trace_seq_puts(struct trace_seq *s, const char *str);
-extern int trace_seq_putc(struct trace_seq *s, unsigned char c);
-
-extern void trace_seq_terminate(struct trace_seq *s);
-
-extern int trace_seq_do_fprintf(struct trace_seq *s, FILE *fp);
-extern int trace_seq_do_printf(struct trace_seq *s);
-
-#endif /* _TRACE_SEQ_H */
tools/scripts
tools/build
tools/include
-tools/lib/traceevent
tools/lib/api
tools/lib/bpf
tools/lib/subcmd
projects / platform / kernel / linux-starfive.git / commitdiff