+++ /dev/null
-/*
- * If TRACE_SYSTEM is defined, that will be the directory created
- * in the ftrace directory under /sys/kernel/debug/tracing/events/<system>
- *
- * The define_trace.h below will also look for a file name of
- * TRACE_SYSTEM.h where TRACE_SYSTEM is what is defined here.
- * In this case, it would look for sample.h
- *
- * If the header name will be different than the system name
- * (as in this case), then you can override the header name that
- * define_trace.h will look up by defining TRACE_INCLUDE_FILE
- *
- * This file is called trace-events-sample.h but we want the system
- * to be called "sample". Therefore we must define the name of this
- * file:
- *
- * #define TRACE_INCLUDE_FILE trace-events-sample
- *
- * As we do an the bottom of this file.
- *
- * Notice that TRACE_SYSTEM should be defined outside of #if
- * protection, just like TRACE_INCLUDE_FILE.
- */
-#undef TRACE_SYSTEM
-#define TRACE_SYSTEM sep
-
-/*
- * Notice that this file is not protected like a normal header.
- * We also must allow for rereading of this file. The
- *
- * || defined(TRACE_HEADER_MULTI_READ)
- *
- * serves this purpose.
- */
-#if !defined(_TRACE_SEP_EVENTS_H) || defined(TRACE_HEADER_MULTI_READ)
-#define _TRACE_SEP_EVENTS_H
-
-#ifdef SEP_PERF_DEBUG
-#define SEP_TRACE_FUNC_IN() trace_sep_func_start(__func__, 0)
-#define SEP_TRACE_FUNC_OUT(branch) trace_sep_func_end(__func__, branch)
-#define SEP_TRACE_EVENT(branch) trace_sep_misc_event(__func__, branch)
-#else
-#define SEP_TRACE_FUNC_IN()
-#define SEP_TRACE_FUNC_OUT(branch)
-#define SEP_TRACE_EVENT(branch)
-#endif
-
-
-/*
- * All trace headers should include tracepoint.h, until we finally
- * make it into a standard header.
- */
-#include <linux/tracepoint.h>
-
-/*
- * The TRACE_EVENT macro is broken up into 5 parts.
- *
- * name: name of the trace point. This is also how to enable the tracepoint.
- * A function called trace_foo_bar() will be created.
- *
- * proto: the prototype of the function trace_foo_bar()
- * Here it is trace_foo_bar(char *foo, int bar).
- *
- * args: must match the arguments in the prototype.
- * Here it is simply "foo, bar".
- *
- * struct: This defines the way the data will be stored in the ring buffer.
- * There are currently two types of elements. __field and __array.
- * a __field is broken up into (type, name). Where type can be any
- * type but an array.
- * For an array. there are three fields. (type, name, size). The
- * type of elements in the array, the name of the field and the size
- * of the array.
- *
- * __array( char, foo, 10) is the same as saying char foo[10].
- *
- * fast_assign: This is a C like function that is used to store the items
- * into the ring buffer.
- *
- * printk: This is a way to print out the data in pretty print. This is
- * useful if the system crashes and you are logging via a serial line,
- * the data can be printed to the console using this "printk" method.
- *
- * Note, that for both the assign and the printk, __entry is the handler
- * to the data structure in the ring buffer, and is defined by the
- * TP_STRUCT__entry.
- */
-TRACE_EVENT(sep_func_start,
-
- TP_PROTO(const char *name, int branch),
-
- TP_ARGS(name, branch),
-
- TP_STRUCT__entry(
- __array(char, name, 20)
- __field(int, branch)
- ),
-
- TP_fast_assign(
- strncpy(__entry->name, name, 20);
- __entry->branch = branch;
- ),
-
- TP_printk("func_start %s %d", __entry->name, __entry->branch)
-);
-
-TRACE_EVENT(sep_func_end,
-
- TP_PROTO(const char *name, int branch),
-
- TP_ARGS(name, branch),
-
- TP_STRUCT__entry(
- __array(char, name, 20)
- __field(int, branch)
- ),
-
- TP_fast_assign(
- strncpy(__entry->name, name, 20);
- __entry->branch = branch;
- ),
-
- TP_printk("func_end %s %d", __entry->name, __entry->branch)
-);
-
-TRACE_EVENT(sep_misc_event,
-
- TP_PROTO(const char *name, int branch),
-
- TP_ARGS(name, branch),
-
- TP_STRUCT__entry(
- __array(char, name, 20)
- __field(int, branch)
- ),
-
- TP_fast_assign(
- strncpy(__entry->name, name, 20);
- __entry->branch = branch;
- ),
-
- TP_printk("misc_event %s %d", __entry->name, __entry->branch)
-);
-
-
-#endif
-
-/***** NOTICE! The #if protection ends here. *****/
-
-
-/*
- * There are several ways I could have done this. If I left out the
- * TRACE_INCLUDE_PATH, then it would default to the kernel source
- * include/trace/events directory.
- *
- * I could specify a path from the define_trace.h file back to this
- * file.
- *
- * #define TRACE_INCLUDE_PATH ../../samples/trace_events
- *
- * But the safest and easiest way to simply make it use the directory
- * that the file is in is to add in the Makefile:
- *
- * CFLAGS_trace-events-sample.o := -I$(src)
- *
- * This will make sure the current path is part of the include
- * structure for our file so that define_trace.h can find it.
- *
- * I could have made only the top level directory the include:
- *
- * CFLAGS_trace-events-sample.o := -I$(PWD)
- *
- * And then let the path to this directory be the TRACE_INCLUDE_PATH:
- *
- * #define TRACE_INCLUDE_PATH samples/trace_events
- *
- * But then if something defines "samples" or "trace_events" as a macro
- * then we could risk that being converted too, and give us an unexpected
- * result.
- */
-#undef TRACE_INCLUDE_PATH
-#undef TRACE_INCLUDE_FILE
-#define TRACE_INCLUDE_PATH .
-/*
- * TRACE_INCLUDE_FILE is not needed if the filename and TRACE_SYSTEM are equal
- */
-#define TRACE_INCLUDE_FILE sep_trace_events
-#include <trace/define_trace.h>
projects / kernel / kernel-mfld-blackbay.git / commitdiff