platform/kernel/linux-starfive.git
3 years agoperf jevents: Support ConfigCode
John Garry [Thu, 16 Sep 2021 12:34:22 +0000 (20:34 +0800)]
perf jevents: Support ConfigCode

Some PMUs use "config=XXX" for eventcodes, like:

more /sys/bus/event_source/devices/hisi_sccl1_ddrc3/events/act_cmd
config=0x5

However jevents would give an alias with .event field "event=0x5" for
this event. This is handled without issue by the parse events code, but
the pmu alias code gets a bit confused, as it warns about assigning
"event=0x5" over "config=0x5" in perf_pmu_assign_str() when merging
aliases: ./perf stat -v -e act_cmd ...  alias act_cmd differs in field
'value' ...

To make things a bit more straightforward, allow jevents to support
"config=XXX" as well, by supporting a "ConfigCode" field.

Signed-off-by: John Garry <john.garry@huawei.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Shaokun Zhang <zhangshaokun@hisilicon.com>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linuxarm@huawei.com
Cc: liuqi115@huawei.com
Link: https://lore.kernel.org/r/1631795665-240946-3-git-send-email-john.garry@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf parse-events: Set numeric term config
John Garry [Thu, 16 Sep 2021 12:34:21 +0000 (20:34 +0800)]
perf parse-events: Set numeric term config

For numeric terms, the config field may be NULL as it is not set from
the l+y parsing.

Fix by setting the term config from the term type name.

Also fix up the pmu-events test to set the alias strings to set the
period term properly, and fix up parse-events test to check the term
config string.

Signed-off-by: John Garry <john.garry@huawei.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Shaokun Zhang <zhangshaokun@hisilicon.com>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linuxarm@huawei.com
Cc: liuqi115@huawei.com
Link: https://lore.kernel.org/r/1631795665-240946-2-git-send-email-john.garry@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agolibtraceevent: Increase libtraceevent logging when verbose
Ian Rogers [Thu, 23 Sep 2021 00:10:24 +0000 (17:10 -0700)]
libtraceevent: Increase libtraceevent logging when verbose

libtraceevent has added more levels of debug printout and with changes
like:

  https://lore.kernel.org/linux-trace-devel/20210507095022.1079364-3-tz.stoyanov@gmail.com

previously generated output like "registering plugin" is no longer
displayed.

This change makes it so that if perf's verbose debug output is enabled
then the debug and info libtraceevent messages can be displayed.

The code is conditionally enabled based on the libtraceevent version as
discussed in the RFC:

  https://lore.kernel.org/lkml/20210610060643.595673-1-irogers@google.com/

v2. Is a rebase and handles the case of building without
    LIBTRACEEVENT_DYNAMIC.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
Cc: linux-trace-devel@vger.kernel.org
Link: http://lore.kernel.org/lkml/20210923001024.550263-4-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf tools: Add define for libtracefs version
Ian Rogers [Thu, 23 Sep 2021 00:10:23 +0000 (17:10 -0700)]
perf tools: Add define for libtracefs version

This will allow version specific support of libtracefs.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
Cc: linux-trace-devel@vger.kernel.org
Link: http://lore.kernel.org/lkml/20210923001024.550263-3-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf tools: Add define for libtraceevent version
Ian Rogers [Thu, 23 Sep 2021 00:10:22 +0000 (17:10 -0700)]
perf tools: Add define for libtraceevent version

The definition is derived from pkg-config as discussed in:

  https://lore.kernel.org/lkml/20210610155915.20a252d3@oasis.local.home/

The definition is computed using expr rather than passed to be computed
in C code, this avoids complications with quote  in the variable
expansions.

For example see the target python/perf.so in Makefile.perf.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
Cc: linux-trace-devel@vger.kernel.org
Link: http://lore.kernel.org/lkml/20210923001024.550263-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf tools: Enable libtracefs dynamic linking
Ian Rogers [Thu, 23 Sep 2021 00:10:21 +0000 (17:10 -0700)]
perf tools: Enable libtracefs dynamic linking

Currently libtracefs isn't used by perf, but there are potential
improvements by using it as identified Steven Rostedt's e-mail:
https://lore.kernel.org/lkml/20210610154759.1ef958f0@oasis.local.home/

This change is modelled on the dynamic libtraceevent patch by Michael
Petlan:

https://lore.kernel.org/linux-perf-users/20210428092023.4009-1-mpetlan@redhat.com/

v3. Adds file missed in v1 and v2 spotted by Jiri Olsa.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
Cc: linux-trace-devel@vger.kernel.org
Link: http://lore.kernel.org/lkml/20210923001024.550263-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf test: Workload test of all PMUs
Ian Rogers [Fri, 17 Sep 2021 18:42:40 +0000 (11:42 -0700)]
perf test: Workload test of all PMUs

Iterate over the list of PMUs and run the 'true' workload on them. If
the event isn't printed then run the large 'perf bench internals
synthesize' workload and check the event is counted.

On a Skylake this test takes 1m15s mainly running the 'true' workload.

Suggested-by: John Garry <john.garry@huawei.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Clarke <pc@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210917184240.2181186-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf test: Workload test of metric and metricgroups
Ian Rogers [Fri, 17 Sep 2021 18:42:39 +0000 (11:42 -0700)]
perf test: Workload test of metric and metricgroups

Test every metric and metricgroup with 'true' as a workload. For
metrics, check that we see the metric printed or get unsupported. If the
'true' workload executes too quickly retry with 'perf bench internals
synthesize'.

v3. Fix test condition (thanks to Paul A. Clarke <pc@us.ibm.com>). Add a
    fallback case of a larger workload so that we don't ignore "<not
    counted>".
v2. Switched the workload to something faster.

Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Clarke <pc@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210917184240.2181186-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf jevents: Add __maybe_unused attribute to unused function arg
Arnaldo Carvalho de Melo [Tue, 28 Sep 2021 17:15:01 +0000 (14:15 -0300)]
perf jevents: Add __maybe_unused attribute to unused function arg

The tools/perf/pmu-events/jevents.c file isn't being compiled with
-Werror and -Wextra, which will be the case soon, so before we turn
those compiler flags on, fix what it would flag.

Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Like Xu <like.xu.linux@gmail.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
To: John Garry <john.garry@huawei.com>

3 years agoperf annotate: Add riscv64 support
William Cohen [Mon, 27 Sep 2021 00:51:15 +0000 (20:51 -0400)]
perf annotate: Add riscv64 support

This patch adds basic arch initialization and instruction associate
support for the riscv64 CPU architecture.

Example output:

  $ perf annotate --stdio2
  Samples: 122K of event 'task-clock:u', 4000 Hz, Event count (approx.): 30637250000, [percent: local period]
  strcmp() /usr/lib64/libc-2.32.so
  Percent

      Disassembly of section .text:

      0000000000069a30 <strcmp>:
      __GI_strcmp():
      const unsigned char *s2 = (const unsigned char *) p2;
      unsigned char c1, c2;

      do
      {
      c1 = (unsigned char) *s1++;
   37.30        lbu  a5,0(a0)
      c2 = (unsigned char) *s2++;
    1.23        addi a1,a1,1
      c1 = (unsigned char) *s1++;
   18.68        addi a0,a0,1
      c2 = (unsigned char) *s2++;
    1.37        lbu  a4,-1(a1)
      if (c1 == '\0')
   18.71      ↓ beqz a5,18
       return c1 - c2;
       }

Signed-off-by: William Cohen <wcohen@redhat.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-riscv@lists.infradead.org
Link: http://lore.kernel.org/lkml/20210927005115.610264-1-wcohen@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf list: Display pmu prefix for partially supported hybrid cache events
Jin Yao [Thu, 9 Sep 2021 06:18:44 +0000 (14:18 +0800)]
perf list: Display pmu prefix for partially supported hybrid cache events

Part of hardware cache events are only available on one CPU PMU.
For example, 'L1-dcache-load-misses' is only available on cpu_core.
perf list should clearly report this info.

root@otcpl-adl-s-2:~# ./perf list

Before:
  L1-dcache-load-misses                              [Hardware cache event]
  L1-dcache-loads                                    [Hardware cache event]
  L1-dcache-stores                                   [Hardware cache event]
  L1-icache-load-misses                              [Hardware cache event]
  L1-icache-loads                                    [Hardware cache event]
  LLC-load-misses                                    [Hardware cache event]
  LLC-loads                                          [Hardware cache event]
  LLC-store-misses                                   [Hardware cache event]
  LLC-stores                                         [Hardware cache event]
  branch-load-misses                                 [Hardware cache event]
  branch-loads                                       [Hardware cache event]
  dTLB-load-misses                                   [Hardware cache event]
  dTLB-loads                                         [Hardware cache event]
  dTLB-store-misses                                  [Hardware cache event]
  dTLB-stores                                        [Hardware cache event]
  iTLB-load-misses                                   [Hardware cache event]
  node-load-misses                                   [Hardware cache event]
  node-loads                                         [Hardware cache event]
  node-store-misses                                  [Hardware cache event]
  node-stores                                        [Hardware cache event]

After:
  L1-dcache-loads                                    [Hardware cache event]
  L1-dcache-stores                                   [Hardware cache event]
  L1-icache-load-misses                              [Hardware cache event]
  LLC-load-misses                                    [Hardware cache event]
  LLC-loads                                          [Hardware cache event]
  LLC-store-misses                                   [Hardware cache event]
  LLC-stores                                         [Hardware cache event]
  branch-load-misses                                 [Hardware cache event]
  branch-loads                                       [Hardware cache event]
  cpu_atom/L1-icache-loads/                          [Hardware cache event]
  cpu_core/L1-dcache-load-misses/                    [Hardware cache event]
  cpu_core/node-load-misses/                         [Hardware cache event]
  cpu_core/node-loads/                               [Hardware cache event]
  dTLB-load-misses                                   [Hardware cache event]
  dTLB-loads                                         [Hardware cache event]
  dTLB-store-misses                                  [Hardware cache event]
  dTLB-stores                                        [Hardware cache event]
  iTLB-load-misses                                   [Hardware cache event]

Now we can clearly see 'L1-dcache-load-misses' is only available
on cpu_core.

If without pmu prefix, it indicates the event is available on both
cpu_core and cpu_atom.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20210909061844.10221-1-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf parse-events: Remove unnecessary #includes
Ian Rogers [Wed, 27 Jan 2021 18:46:29 +0000 (10:46 -0800)]
perf parse-events: Remove unnecessary #includes

Minor cleanup motivated by trying to separately fuzz test parse-events.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210127184629.516169-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf daemon: Avoid msan warnings on send_cmd
Ian Rogers [Thu, 17 Jun 2021 05:55:54 +0000 (22:55 -0700)]
perf daemon: Avoid msan warnings on send_cmd

As a full union is always sent, ensure all bytes of the union are
initialized with memset to avoid msan warnings of use of uninitialized
memory.

An example warning from the daemon test:

Uninitialized bytes in __interceptor_write at offset 71 inside [0x7ffd98da6280, 72)
==11602==WARNING: MemorySanitizer: use-of-uninitialized-value
    #0 0x5597edccdbe4 in ion tools/lib/perf/lib.c:18:6
    #1 0x5597edccdbe4 in writen tools/lib/perf/lib.c:47:9
    #2 0x5597ed221d30 in send_cmd tools/perf/builtin-daemon.c:1376:22
    #3 0x5597ed21b48c in cmd_daemon tools/perf/builtin-daemon.c
    #4 0x5597ed1d6b67 in run_builtin tools/perf/perf.c:313:11
    #5 0x5597ed1d6036 in handle_internal_command tools/perf/perf.c:365:8
    #6 0x5597ed1d6036 in run_argv tools/perf/perf.c:409:2
    #7 0x5597ed1d6036 in main tools/perf/perf.c:539:3

SUMMARY: MemorySanitizer: use-of-uninitialized-value tools/lib/perf/lib.c:18:6 in ion
Exiting

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20210617055554.1917997-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoMerge remote-tracking branch 'torvalds/master' into perf/core
Arnaldo Carvalho de Melo [Tue, 21 Sep 2021 18:35:47 +0000 (15:35 -0300)]
Merge remote-tracking branch 'torvalds/master' into perf/core

To pick up fixes in the last pushed perf/urgent.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoMerge tag 's390-5.15-ebpf-jit-fixes' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Tue, 21 Sep 2021 16:36:11 +0000 (09:36 -0700)]
Merge tag 's390-5.15-ebpf-jit-fixes' of git://git./linux/kernel/git/s390/linux

Pull s390 eBPF fixes from Vasily Gorbik:
 "Johan Almbladh has implemented a number of new testcases for eBPF [1],
  which uncovered three miscompilation issues in the s390 eBPF JIT"

Link: https://lore.kernel.org/bpf/20210902185229.1840281-1-johan.almbladh@anyfinetworks.com/
* tag 's390-5.15-ebpf-jit-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/bpf: Fix optimizing out zero-extensions
  s390/bpf: Fix 64-bit subtraction of the -0x80000000 constant
  s390/bpf: Fix branch shortening during codegen pass

3 years agoqnx4: work around gcc false positive warning bug
Linus Torvalds [Mon, 20 Sep 2021 17:26:21 +0000 (10:26 -0700)]
qnx4: work around gcc false positive warning bug

In commit b7213ffa0e58 ("qnx4: avoid stringop-overread errors") I tried
to teach gcc about how the directory entry structure can be two
different things depending on a status flag.  It made the code clearer,
and it seemed to make gcc happy.

However, Arnd points to a gcc bug, where despite using two different
members of a union, gcc then gets confused, and uses the size of one of
the members to decide if a string overrun happens.  And not necessarily
the rigth one.

End result: with some configurations, gcc-11 will still complain about
the source buffer size being overread:

  fs/qnx4/dir.c: In function 'qnx4_readdir':
  fs/qnx4/dir.c:76:32: error: 'strnlen' specified bound [16, 48] exceeds source size 1 [-Werror=stringop-overread]
     76 |                         size = strnlen(name, size);
        |                                ^~~~~~~~~~~~~~~~~~~
  fs/qnx4/dir.c:26:22: note: source object declared here
     26 |                 char de_name;
        |                      ^~~~~~~

because gcc will get confused about which union member entry is actually
getting accessed, even when the source code is very clear about it.  Gcc
internally will have combined two "redundant" pointers (pointing to
different union elements that are at the same offset), and takes the
size checking from one or the other - not necessarily the right one.

This is clearly a gcc bug, but we can work around it fairly easily.  The
biggest thing here is the big honking comment about why we do what we
do.

Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99578#c6
Reported-and-tested-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge tag 'afs-fixes-20210913' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowe...
Linus Torvalds [Mon, 20 Sep 2021 22:49:02 +0000 (15:49 -0700)]
Merge tag 'afs-fixes-20210913' of git://git./linux/kernel/git/dhowells/linux-fs

Pull AFS fixes from David Howells:
 "Fixes for AFS problems that can cause data corruption due to
  interaction with another client modifying data cached locally:

   - When d_revalidating a dentry, don't look at the inode to which it
     points. Only check the directory to which the dentry belongs. This
     was confusing things and causing the silly-rename cleanup code to
     remove the file now at the dentry of a file that got deleted.

   - Fix mmap data coherency. When a callback break is received that
     relates to a file that we have cached, the data content may have
     been changed (there are other reasons, such as the user's rights
     having been changed). However, we're checking it lazily, only on
     entry to the kernel, which doesn't happen if we have a writeable
     shared mapped page on that file.

     We make the kernel keep track of mmapped files and clear all PTEs
     mapping to that file as soon as the callback comes in by calling
     unmap_mapping_pages() (we don't necessarily want to zap the
     pagecache). This causes the kernel to be reentered when userspace
     tries to access the mmapped address range again - and at that point
     we can query the server and, if we need to, zap the page cache.

     Ideally, I would check each file at the point of notification, but
     that involves poking the server[*] - which is holding an exclusive
     lock on the vnode it is changing, waiting for all the clients it
     notified to reply. This could then deadlock against the server.
     Further, invalidating the pagecache might call ->launder_page(),
     which would try to write to the file, which would definitely
     deadlock. (AFS doesn't lease file access).

     [*] Checking to see if the file content has changed is a matter of
         comparing the current data version number, but we have to ask
         the server for that. We also need to get a new callback promise
         and we need to poke the server for that too.

   - Add some more points at which the inode is validated, since we're
     doing it lazily, notably in ->read_iter() and ->page_mkwrite(), but
     also when performing some directory operations.

     Ideally, checking in ->read_iter() would be done in some derivation
     of filemap_read(). If we're going to call the server to read the
     file, then we get the file status fetch as part of that.

   - The above is now causing us to make a lot more calls to
     afs_validate() to check the inode - and afs_validate() takes the
     RCU read lock each time to make a quick check (ie.
     afs_check_validity()). This is entirely for the purpose of checking
     cb_s_break to see if the server we're using reinitialised its list
     of callbacks - however this isn't a very common event, so most of
     the time we're taking this needlessly.

     Add a new cell-wide counter to count the number of
     reinitialisations done by any server and check that - and only if
     that changes, take the RCU read lock and check the server list (the
     server list may change, but the cell a file is part of won't).

   - Don't update vnode->cb_s_break and ->cb_v_break inside the validity
     checking loop. The cb_lock is done with read_seqretry, so we might
     go round the loop a second time after resetting those values - and
     that could cause someone else checking validity to miss something
     (I think).

  Also included are patches for fixes for some bugs encountered whilst
  debugging this:

   - Fix a leak of afs_read objects and fix a leak of keys hidden by
     that.

   - Fix a leak of pages that couldn't be added to extend a writeback.

   - Fix the maintenance of i_blocks when i_size is changed by a local
     write or a local dir edit"

Link: https://bugzilla.kernel.org/show_bug.cgi?id=214217
Link: https://lore.kernel.org/r/163111665183.283156.17200205573146438918.stgit@warthog.procyon.org.uk/
Link: https://lore.kernel.org/r/163113612442.352844.11162345591911691150.stgit@warthog.procyon.org.uk/
* tag 'afs-fixes-20210913' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
  afs: Fix updating of i_blocks on file/dir extension
  afs: Fix corruption in reads at fpos 2G-4G from an OpenAFS server
  afs: Try to avoid taking RCU read lock when checking vnode validity
  afs: Fix mmap coherency vs 3rd-party changes
  afs: Fix incorrect triggering of sillyrename on 3rd-party invalidation
  afs: Add missing vnode validation checks
  afs: Fix page leak
  afs: Fix missing put on afs_read objects and missing get on the key therein

3 years agoMerge tag '5.15-rc1-ksmbd' of git://git.samba.org/ksmbd
Linus Torvalds [Mon, 20 Sep 2021 22:35:17 +0000 (15:35 -0700)]
Merge tag '5.15-rc1-ksmbd' of git://git.samba.org/ksmbd

Pull ksmbd server fixes from Steve French:
 "Three ksmbd fixes, including an important security fix for path
  processing, and a buffer overflow check, and a trivial fix for
  incorrect header inclusion"

* tag '5.15-rc1-ksmbd' of git://git.samba.org/ksmbd:
  ksmbd: add validation for FILE_FULL_EA_INFORMATION of smb2_get_info
  ksmbd: prevent out of share access
  ksmbd: transport_rdma: Don't include rwlock.h directly

3 years agoMerge tag '5.15-rc1-smb3' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Mon, 20 Sep 2021 22:30:29 +0000 (15:30 -0700)]
Merge tag '5.15-rc1-smb3' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs client fixes from Steve French:

 - two deferred close fixes (for bugs found with xfstests 478 and 461)

 - a deferred close improvement in rename

 - two trivial fixes for incorrect Linux comment formatting of multiple
   cifs files (pointed out by automated kernel test robot and
   checkpatch)

* tag '5.15-rc1-smb3' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: Not to defer close on file when lock is set
  cifs: Fix soft lockup during fsstress
  cifs: Deferred close performance improvements
  cifs: fix incorrect kernel doc comments
  cifs: remove pathname for file from SPDX header

3 years agoMerge tag 'spi-fix-v5.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/brooni...
Linus Torvalds [Mon, 20 Sep 2021 19:14:33 +0000 (12:14 -0700)]
Merge tag 'spi-fix-v5.15-rc2' of git://git./linux/kernel/git/broonie/spi

Pull spi fixes from Mark BrownL
 "This contains a couple of fixes, one fix for handling of zero length
  transfers on Rockchip devices and a warning fix which will conflict
  with a version you did but cleans up some extra unneeded forward
  declarations as well which seems a bit neater"

* tag 'spi-fix-v5.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: tegra20-slink: Declare runtime suspend and resume functions conditionally
  spi: rockchip: handle zero length transfers without timing out

3 years agoMerge tag 'regulator-fix-v5.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 20 Sep 2021 18:47:41 +0000 (11:47 -0700)]
Merge tag 'regulator-fix-v5.15-rc2' of git://git./linux/kernel/git/broonie/regulator

Pull regulator fixes from Mark Brown:
 "A couple of small device specific fixes that have been sent since the
  merge window, neither of which stands out particularly"

* tag 'regulator-fix-v5.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: max14577: Revert "regulator: max14577: Add proper module aliases strings"
  regulator: qcom-rpmh-regulator: fix pm8009-1 ldo7 resource name

3 years agodrm/nouveau/nvkm: Replace -ENOSYS with -ENODEV
Guenter Roeck [Wed, 8 Sep 2021 19:08:17 +0000 (12:08 -0700)]
drm/nouveau/nvkm: Replace -ENOSYS with -ENODEV

nvkm test builds fail with the following error.

  drivers/gpu/drm/nouveau/nvkm/engine/device/ctrl.c: In function 'nvkm_control_mthd_pstate_info':
  drivers/gpu/drm/nouveau/nvkm/engine/device/ctrl.c:60:35: error: overflow in conversion from 'int' to '__s8' {aka 'signed char'} changes value from '-251' to '5'

The code builds on most architectures, but fails on parisc where ENOSYS
is defined as 251.

Replace the error code with -ENODEV (-19).  The actual error code does
not really matter and is not passed to userspace - it just has to be
negative.

Fixes: 7238eca4cf18 ("drm/nouveau: expose pstate selection per-power source in sysfs")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agosparc64: fix pci_iounmap() when CONFIG_PCI is not set
Linus Torvalds [Mon, 20 Sep 2021 17:56:32 +0000 (10:56 -0700)]
sparc64: fix pci_iounmap() when CONFIG_PCI is not set

Guenter reported [1] that the pci_iounmap() changes remain problematic,
with sparc64 allnoconfig and tinyconfig still not building due to the
header file changes and confusion with the arch-specific pci_iounmap()
implementation.

I'm pretty convinced that sparc should just use GENERIC_IOMAP instead of
doing its own thing, since it turns out that the sparc64 version of
pci_iounmap() is somewhat buggy (see [2]).  But in the meantime, this
just fixes the build by avoiding the trivial re-definition of the empty
case.

Link: https://lore.kernel.org/lkml/20210920134424.GA346531@roeck-us.net/
Link: https://lore.kernel.org/lkml/CAHk-=wgheheFx9myQyy5osh79BAazvmvYURAtub2gQtMvLrhqQ@mail.gmail.com/
Reported-by: Guenter Roeck <linux@roeck-us.net>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoLinux 5.15-rc2
Linus Torvalds [Mon, 20 Sep 2021 00:28:22 +0000 (17:28 -0700)]
Linux 5.15-rc2

3 years agopci_iounmap'2: Electric Boogaloo: try to make sense of it all
Linus Torvalds [Mon, 20 Sep 2021 00:13:35 +0000 (17:13 -0700)]
pci_iounmap'2: Electric Boogaloo: try to make sense of it all

Nathan Chancellor reports that the recent change to pci_iounmap in
commit 9caea0007601 ("parisc: Declare pci_iounmap() parisc version only
when CONFIG_PCI enabled") causes build errors on arm64.

It took me about two hours to convince myself that I think I know what
the logic of that mess of #ifdef's in the <asm-generic/io.h> header file
really aim to do, and rewrite it to be easier to follow.

Famous last words.

Anyway, the code has now been lifted from that grotty header file into
lib/pci_iomap.c, and has fairly extensive comments about what the logic
is.  It also avoids indirecting through another confusing (and badly
named) helper function that has other preprocessor config conditionals.

Let's see what odd architecture did something else strange in this area
to break things.  But my arm64 cross build is clean.

Fixes: 9caea0007601 ("parisc: Declare pci_iounmap() parisc version only when CONFIG_PCI enabled")
Reported-by: Nathan Chancellor <nathan@kernel.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Ulrich Teichert <krypton@ulrich-teichert.org>
Cc: James Bottomley <James.Bottomley@hansenpartnership.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge tag 'x86_urgent_for_v5.15_rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 19 Sep 2021 20:29:36 +0000 (13:29 -0700)]
Merge tag 'x86_urgent_for_v5.15_rc2' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:

 - Prevent a infinite loop in the MCE recovery on return to user space,
   which was caused by a second MCE queueing work for the same page and
   thereby creating a circular work list.

 - Make kern_addr_valid() handle existing PMD entries, which are marked
   not present in the higher level page table, correctly instead of
   blindly dereferencing them.

 - Pass a valid address to sanitize_phys(). This was caused by the
   mixture of inclusive and exclusive ranges. memtype_reserve() expect
   'end' being exclusive, but sanitize_phys() wants it inclusive. This
   worked so far, but with end being the end of the physical address
   space the fail is exposed.

 - Increase the maximum supported GPIO numbers for 64bit. Newer SoCs
   exceed the previous maximum.

* tag 'x86_urgent_for_v5.15_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mce: Avoid infinite loop for copy from user recovery
  x86/mm: Fix kern_addr_valid() to cope with existing but not present entries
  x86/platform: Increase maximum GPIO number for X86_64
  x86/pat: Pass valid address to sanitize_phys()

3 years agoMerge tag 'perf-urgent-2021-09-19' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 19 Sep 2021 20:22:40 +0000 (13:22 -0700)]
Merge tag 'perf-urgent-2021-09-19' of git://git./linux/kernel/git/tip/tip

Pull perf event fix from Thomas Gleixner:
 "A single fix for the perf core where a value read with READ_ONCE() was
  checked and then reread which makes all the checks invalid. Reuse the
  already read value instead"

* tag 'perf-urgent-2021-09-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  events: Reuse value read using READ_ONCE instead of re-reading it

3 years agoMerge tag 'locking-urgent-2021-09-19' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 19 Sep 2021 20:11:19 +0000 (13:11 -0700)]
Merge tag 'locking-urgent-2021-09-19' of git://git./linux/kernel/git/tip/tip

Pull locking fixes from Thomas Gleixner:
 "A set of updates for the RT specific reader/writer locking base code:

   - Make the fast path reader ordering guarantees correct.

   - Code reshuffling to make the fix simpler"

[ This plays ugly games with atomic_add_return_release() because we
  don't have a plain atomic_add_release(), and should really be cleaned
  up, I think    - Linus ]

* tag 'locking-urgent-2021-09-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/rwbase: Take care of ordering guarantee for fastpath reader
  locking/rwbase: Extract __rwbase_write_trylock()
  locking/rwbase: Properly match set_and_save_state() to restore_state()

3 years agoMerge tag 'powerpc-5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sun, 19 Sep 2021 20:00:23 +0000 (13:00 -0700)]
Merge tag 'powerpc-5.15-2' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - Fix crashes when scv (System Call Vectored) is used to make a syscall
   when a transaction is active, on Power9 or later.

 - Fix bad interactions between rfscv (Return-from scv) and Power9
   fake-suspend mode.

 - Fix crashes when handling machine checks in LPARs using the Hash MMU.

 - Partly revert a recent change to our XICS interrupt controller code,
   which broke the recently added Microwatt support.

Thanks to Cédric Le Goater, Eirik Fuller, Ganesh Goudar, Gustavo Romero,
Joel Stanley, Nicholas Piggin.

* tag 'powerpc-5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/xics: Set the IRQ chip data for the ICS native backend
  powerpc/mce: Fix access error in mce handler
  KVM: PPC: Book3S HV: Tolerate treclaim. in fake-suspend mode changing registers
  powerpc/64s: system call rfscv workaround for TM bugs
  selftests/powerpc: Add scv versions of the basic TM syscall tests
  powerpc/64s: system call scv tabort fix for corrupt irq soft-mask state

3 years agoMerge tag 'kbuild-fixes-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masah...
Linus Torvalds [Sun, 19 Sep 2021 19:55:12 +0000 (12:55 -0700)]
Merge tag 'kbuild-fixes-v5.15' of git://git./linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Fix bugs in checkkconfigsymbols.py

 - Fix missing sys import in gen_compile_commands.py

 - Fix missing FORCE warning for ARCH=sh builds

 - Fix -Wignored-optimization-argument warnings for Clang builds

 - Turn -Wignored-optimization-argument into an error in order to stop
   building instead of sprinkling warnings

* tag 'kbuild-fixes-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: Add -Werror=ignored-optimization-argument to CLANG_FLAGS
  x86/build: Do not add -falign flags unconditionally for clang
  kbuild: Fix comment typo in scripts/Makefile.modpost
  sh: Add missing FORCE prerequisites in Makefile
  gen_compile_commands: fix missing 'sys' package
  checkkconfigsymbols.py: Remove skipping of help lines in parse_kconfig_file
  checkkconfigsymbols.py: Forbid passing 'HEAD' to --commit

3 years agoMerge tag 'perf-tools-fixes-for-v5.15-2021-09-18' of git://git.kernel.org/pub/scm...
Linus Torvalds [Sun, 19 Sep 2021 19:49:17 +0000 (12:49 -0700)]
Merge tag 'perf-tools-fixes-for-v5.15-2021-09-18' of git://git./linux/kernel/git/acme/linux

Pull perf tools fixes from Arnaldo Carvalho de Melo:

 - Fix ip display in 'perf script' when output type != attr->type.

 - Ignore deprecation warning when using libbpf'sg btf__get_from_id(),
   fixing the build with libbpf v0.6+.

 - Make use of FD() robust in libperf, fixing a segfault with 'perf stat
   --iostat list'.

 - Initialize addr_location:srcline pointer to NULL when resolving
   callchain addresses.

 - Fix fused instruction logic for assembly functions in 'perf
   annotate'.

* tag 'perf-tools-fixes-for-v5.15-2021-09-18' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf bpf: Ignore deprecation warning when using libbpf's btf__get_from_id()
  libperf evsel: Make use of FD robust.
  perf machine: Initialize srcline string member in add_location struct
  perf script: Fix ip display when type != attr->type
  perf annotate: Fix fused instr logic for assembly functions

3 years agodmascc: use proper 'virt_to_bus()' rather than casting to 'int'
Linus Torvalds [Sun, 19 Sep 2021 17:49:42 +0000 (10:49 -0700)]
dmascc: use proper 'virt_to_bus()' rather than casting to 'int'

The old dmascc driver depends on the legacy ISA_DMA_API, and blindly
just casts the kernel virtual address to 'int' for set_dma_addr().

That works only incidentally, and because the high bits of the address
will be ignored anyway. And on 64-bit architectures it causes warnings.

Admittedly, 64-bit architectures with ISA are basically dead - I think
the only example of this is alpha, and nobody would ever use the dmascc
driver there.  But hey, the fix is easy enough, the end result is
cleaner, and it's yet another configuration that now builds without
warnings.

If somebody actually uses this driver on an alpha and this fixes it for
you, please email me.  Because that is just incredibly bizarre.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoalpha: enable GENERIC_PCI_IOMAP unconditionally
Linus Torvalds [Sun, 19 Sep 2021 17:37:00 +0000 (10:37 -0700)]
alpha: enable GENERIC_PCI_IOMAP unconditionally

With the previous commit (9caea0007601: "parisc: Declare pci_iounmap()
parisc version only when CONFIG_PCI enabled") we can now enable
GENERIC_PCI_IOMAP unconditionally on alpha, and if PCI is not enabled we
will just get the nice empty helper functions that allow mixed-bus
drivers to build.

Example driver: the old 3com/3c59x.c driver works with either the PCI or
the EISA version of the 3x59x card, but wouldn't build in an EISA-only
configuration because of missing pci_iomap() and pci_iounmap() dummy
wrappers.

Most of the other PCI infrastructure just becomes empty wrappers even
without GENERIC_PCI_IOMAP, and it's not obvious that the pci_iomap
functionality shouldn't do the same, but this works.

Cc: Ulrich Teichert <krypton@ulrich-teichert.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoparisc: Declare pci_iounmap() parisc version only when CONFIG_PCI enabled
Helge Deller [Sun, 19 Sep 2021 17:36:09 +0000 (10:36 -0700)]
parisc: Declare pci_iounmap() parisc version only when CONFIG_PCI enabled

Linus noticed odd declaration rules for pci_iounmap() in iomap.h and
pci_iomap.h, where it dependend on either NO_GENERIC_PCI_IOPORT_MAP or
GENERIC_IOMAP when CONFIG_PCI was disabled.

Testing on parisc seems to indicate that we need pci_iounmap() only when
CONFIG_PCI is enabled, so the declaration of pci_iounmap() can be moved
cleanly into pci_iomap.h in sync with the declarations of pci_iomap().

Link: https://lore.kernel.org/all/CAHk-=wjRrh98pZoQ+AzfWmsTZacWxTJKXZ9eKU2X_0+jM=O8nw@mail.gmail.com/
Signed-off-by: Helge Deller <deller@gmx.de>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes: 97a29d59fc22 ("[PARISC] fix compile break caused by iomap: make IOPORT/PCI mapping functions conditional")
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Ulrich Teichert <krypton@ulrich-teichert.org>
Cc: James Bottomley <James.Bottomley@hansenpartnership.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoRevert "drm/vc4: hdmi: Remove drm_encoder->crtc usage"
Linus Torvalds [Sun, 19 Sep 2021 17:11:53 +0000 (10:11 -0700)]
Revert "drm/vc4: hdmi: Remove drm_encoder->crtc usage"

This reverts commit 27da370e0fb343a0baf308f503bb3e5dcdfe3362.

Sudip Mukherjee reports that this broke pulseaudio with a NULL pointer
dereference in vc4_hdmi_audio_prepare(), bisected it to this commit, and
confirmed that a revert fixed the problem.

Revert the problematic commit until fixed.

Link: https://lore.kernel.org/all/CADVatmPB9-oKd=ypvj25UYysVo6EZhQ6bCM7EvztQBMyiZfAyw@mail.gmail.com/
Link: https://lore.kernel.org/all/CADVatmN5EpRshGEPS_JozbFQRXg5w_8LFB3OMP1Ai-ghxd3w4g@mail.gmail.com/
Reported-and-tested-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Emma Anholt <emma@anholt.net>
Cc: Dave Airlie <airlied@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoRevert drm/vc4 hdmi runtime PM changes
Linus Torvalds [Sun, 19 Sep 2021 17:06:46 +0000 (10:06 -0700)]
Revert drm/vc4 hdmi runtime PM changes

This reverts commits

  9984d6664ce9 ("drm/vc4: hdmi: Make sure the controller is powered in detect")
  411efa18e4b0 ("drm/vc4: hdmi: Move the HSM clock enable to runtime_pm")

as Michael Stapelberg reports that the new runtime PM changes cause his
Raspberry Pi 3 to hang on boot, probably due to interactions with other
changes in the DRM tree (because a bisect points to the merge in commit
e058a84bfddc: "Merge tag 'drm-next-2021-07-01' of git://.../drm").

Revert these two commits until it's been resolved.

Link: https://lore.kernel.org/all/871r5mp7h2.fsf@midna.i-did-not-set--mail-host-address--so-tickle-me/
Reported-and-tested-by: Michael Stapelberg <michael@stapelberg.ch>
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Dave Stevenson <dave.stevenson@raspberrypi.com>
Cc: Dave Airlie <airlied@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agokbuild: Add -Werror=ignored-optimization-argument to CLANG_FLAGS
Nathan Chancellor [Thu, 16 Sep 2021 18:40:17 +0000 (11:40 -0700)]
kbuild: Add -Werror=ignored-optimization-argument to CLANG_FLAGS

Similar to commit 589834b3a009 ("kbuild: Add
-Werror=unknown-warning-option to CLANG_FLAGS").

Clang ignores certain GCC flags that it has not implemented, only
emitting a warning:

$ echo | clang -fsyntax-only -falign-jumps -x c -
clang-14: warning: optimization flag '-falign-jumps' is not supported
[-Wignored-optimization-argument]

When one of these flags gets added to KBUILD_CFLAGS unconditionally, all
subsequent cc-{disable-warning,option} calls fail because -Werror was
added to these invocations to turn the above warning and the equivalent
-W flag warning into errors.

To catch the presence of these flags earlier, turn
-Wignored-optimization-argument into an error so that the flags can
either be implemented or ignored via cc-option and there are no more
weird errors.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
3 years agox86/build: Do not add -falign flags unconditionally for clang
Nathan Chancellor [Thu, 16 Sep 2021 18:40:16 +0000 (11:40 -0700)]
x86/build: Do not add -falign flags unconditionally for clang

clang does not support -falign-jumps and only recently gained support
for -falign-loops. When one of the configuration options that adds these
flags is enabled, clang warns and all cc-{disable-warning,option} that
follow fail because -Werror gets added to test for the presence of this
warning:

clang-14: warning: optimization flag '-falign-jumps=0' is not supported
[-Wignored-optimization-argument]

To resolve this, add a couple of cc-option calls when building with
clang; gcc has supported these options since 3.2 so there is no point in
testing for their support. -falign-functions was implemented in clang-7,
-falign-loops was implemented in clang-14, and -falign-jumps has not
been implemented yet.

Link: https://lore.kernel.org/r/YSQE2f5teuvKLkON@Ryzen-9-3900X.localdomain/
Link: https://lore.kernel.org/r/20210824022640.2170859-2-nathan@kernel.org/
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
3 years agokbuild: Fix comment typo in scripts/Makefile.modpost
Ramji Jiyani [Thu, 16 Sep 2021 09:21:22 +0000 (09:21 +0000)]
kbuild: Fix comment typo in scripts/Makefile.modpost

Change comment "create one <module>.mod.c file pr. module"
to "create one <module>.mod.c file per module"

Signed-off-by: Ramji Jiyani <ramjiyani@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
3 years agosh: Add missing FORCE prerequisites in Makefile
Geert Uytterhoeven [Thu, 16 Sep 2021 08:43:53 +0000 (10:43 +0200)]
sh: Add missing FORCE prerequisites in Makefile

make:

    arch/sh/boot/Makefile:87: FORCE prerequisite is missing

Add the missing FORCE prerequisites for all build targets identified by
"make help".

Fixes: e1f86d7b4b2a5213 ("kbuild: warn if FORCE is missing for if_changed(_dep,_rule) and filechk")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
3 years agogen_compile_commands: fix missing 'sys' package
Kortan [Wed, 8 Sep 2021 03:28:48 +0000 (11:28 +0800)]
gen_compile_commands: fix missing 'sys' package

We need to import the 'sys' package since the script has called
sys.exit() method.

Fixes: 6ad7cbc01527 ("Makefile: Add clang-tidy and static analyzer support to makefile")
Signed-off-by: Kortan <kortanzh@gmail.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
3 years agocheckkconfigsymbols.py: Remove skipping of help lines in parse_kconfig_file
Ariel Marcovitch [Wed, 1 Sep 2021 16:49:52 +0000 (19:49 +0300)]
checkkconfigsymbols.py: Remove skipping of help lines in parse_kconfig_file

When parsing Kconfig files to find symbol definitions and references,
lines after a 'help' line are skipped until a new config definition
starts.

However, Kconfig statements can actually be after a help section, as
long as these have shallower indentation. These are skipped by the
parser.

This means that symbols referenced in this kind of statements are
ignored by this function and thus are not considered undefined
references in case the symbol is not defined.

Remove the 'skip' logic entirely, as it is not needed if we just use the
STMT regex to find the end of help lines.

However, this means that keywords that appear as part of the help
message (i.e. with the same indentation as the help lines) it will be
considered as a reference/definition. This can happen now as well, but
only with REGEX_KCONFIG_DEF lines. Also, the keyword must have a SYMBOL
after it, which probably means that someone referenced a config in the
help so it seems like a bonus :)

The real solution is to keep track of the indentation when a the first
help line in encountered and then handle DEF and STMT lines only if the
indentation is shallower.

Signed-off-by: Ariel Marcovitch <arielmarcovitch@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
3 years agocheckkconfigsymbols.py: Forbid passing 'HEAD' to --commit
Ariel Marcovitch [Wed, 1 Sep 2021 14:52:12 +0000 (17:52 +0300)]
checkkconfigsymbols.py: Forbid passing 'HEAD' to --commit

As opposed to the --diff option, --commit can get ref names instead of
commit hashes.

When using the --commit option, the script resets the working directory
to the commit before the given ref, by adding '~' to the end of the ref.

However, the 'HEAD' ref is relative, and so when the working directory
is reset to 'HEAD~', 'HEAD' points to what was 'HEAD~'. Then when the
script resets to 'HEAD' it actually stays in the same commit. In this
case, the script won't report any cases because there is no diff between
the cases of the two refs.

Prevent the user from using HEAD refs.

A better solution might be to resolve the refs before doing the
reset, but for now just disallow such refs.

Signed-off-by: Ariel Marcovitch <arielmarcovitch@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
3 years agoalpha: move __udiv_qrnnd library function to arch/alpha/lib/
Linus Torvalds [Sat, 18 Sep 2021 21:45:48 +0000 (14:45 -0700)]
alpha: move __udiv_qrnnd library function to arch/alpha/lib/

We already had the implementation for __udiv_qrnnd (unsigned divide for
multi-precision arithmetic) as part of the alpha math emulation code.

But you can disable the math emulation code - even if you shouldn't -
and then the MPI code that actually wants this functionality (and is
needed by various crypto functions) will fail to build.

So move the extended-precision divide code to be a regular library
function, just like all the regular division code is.  That way ie is
available regardless of math-emulation.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoalpha: mark 'Jensen' platform as no longer broken
Linus Torvalds [Sat, 18 Sep 2021 21:12:39 +0000 (14:12 -0700)]
alpha: mark 'Jensen' platform as no longer broken

Ok, it almost certainly is still broken on actual hardware, but the
immediate reason for it having been marked BROKEN was a build error that
is fixed by just making sure the low-level IO header file is included
sufficiently early that the __EXTERN_INLINE hackery takes effect.

This was marked broken back in 2017 by commit 1883c9f49d02 ("alpha: mark
jensen as broken"), but Ulrich Teichert made me look at it as part of my
cross-build work to make sure -Werror actually does the right thing.

There are lots of alpha configurations that do not build cleanly, but
now it's no longer because Jensen wouldn't be buildable.  That said,
because the Jensen platform doesn't force PCI to be enabled (Jensen only
had EISA), it ends up being somewhat interesting as a source of odd
configs.

Reported-by: Ulrich Teichert <krypton@ulrich-teichert.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoperf bpf: Ignore deprecation warning when using libbpf's btf__get_from_id()
Andrii Nakryiko [Tue, 14 Sep 2021 17:00:04 +0000 (10:00 -0700)]
perf bpf: Ignore deprecation warning when using libbpf's btf__get_from_id()

Perf code re-implements libbpf's btf__load_from_kernel_by_id() API as
a weak function, presumably to dynamically link against old version of
libbpf shared library. Unfortunately this causes compilation warning
when perf is compiled against libbpf v0.6+.

For now, just ignore deprecation warning, but there might be a better
solution, depending on perf's needs.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: kernel-team@fb.com
LPU-Reference: 20210914170004.4185659-1-andrii@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agolibperf evsel: Make use of FD robust.
Ian Rogers [Sat, 18 Sep 2021 05:44:40 +0000 (22:44 -0700)]
libperf evsel: Make use of FD robust.

FD uses xyarray__entry that may return NULL if an index is out of
bounds. If NULL is returned then a segv happens as FD unconditionally
dereferences the pointer. This was happening in a case of with perf
iostat as shown below. The fix is to make FD an "int*" rather than an
int and handle the NULL case as either invalid input or a closed fd.

  $ sudo gdb --args perf stat --iostat  list
  ...
  Breakpoint 1, perf_evsel__alloc_fd (evsel=0x5555560951a0, ncpus=1, nthreads=1) at evsel.c:50
  50      {
  (gdb) bt
   #0  perf_evsel__alloc_fd (evsel=0x5555560951a0, ncpus=1, nthreads=1) at evsel.c:50
   #1  0x000055555585c188 in evsel__open_cpu (evsel=0x5555560951a0, cpus=0x555556093410,
      threads=0x555556086fb0, start_cpu=0, end_cpu=1) at util/evsel.c:1792
   #2  0x000055555585cfb2 in evsel__open (evsel=0x5555560951a0, cpus=0x0, threads=0x555556086fb0)
      at util/evsel.c:2045
   #3  0x000055555585d0db in evsel__open_per_thread (evsel=0x5555560951a0, threads=0x555556086fb0)
      at util/evsel.c:2065
   #4  0x00005555558ece64 in create_perf_stat_counter (evsel=0x5555560951a0,
      config=0x555555c34700 <stat_config>, target=0x555555c2f1c0 <target>, cpu=0) at util/stat.c:590
   #5  0x000055555578e927 in __run_perf_stat (argc=1, argv=0x7fffffffe4a0, run_idx=0)
      at builtin-stat.c:833
   #6  0x000055555578f3c6 in run_perf_stat (argc=1, argv=0x7fffffffe4a0, run_idx=0)
      at builtin-stat.c:1048
   #7  0x0000555555792ee5 in cmd_stat (argc=1, argv=0x7fffffffe4a0) at builtin-stat.c:2534
   #8  0x0000555555835ed3 in run_builtin (p=0x555555c3f540 <commands+288>, argc=3,
      argv=0x7fffffffe4a0) at perf.c:313
   #9  0x0000555555836154 in handle_internal_command (argc=3, argv=0x7fffffffe4a0) at perf.c:365
   #10 0x000055555583629f in run_argv (argcp=0x7fffffffe2ec, argv=0x7fffffffe2e0) at perf.c:409
   #11 0x0000555555836692 in main (argc=3, argv=0x7fffffffe4a0) at perf.c:539
  ...
  (gdb) c
  Continuing.
  Error:
  The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (uncore_iio_0/event=0x83,umask=0x04,ch_mask=0xF,fc_mask=0x07/).
  /bin/dmesg | grep -i perf may provide additional information.

  Program received signal SIGSEGV, Segmentation fault.
  0x00005555559b03ea in perf_evsel__close_fd_cpu (evsel=0x5555560951a0, cpu=1) at evsel.c:166
  166                     if (FD(evsel, cpu, thread) >= 0)

v3. fixes a bug in perf_evsel__run_ioctl where the sense of a branch was
    backward.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210918054440.2350466-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf machine: Initialize srcline string member in add_location struct
Michael Petlan [Mon, 19 Jul 2021 14:53:32 +0000 (16:53 +0200)]
perf machine: Initialize srcline string member in add_location struct

It's later supposed to be either a correct address or NULL. Without the
initialization, it may contain an undefined value which results in the
following segmentation fault:

  # perf top --sort comm -g --ignore-callees=do_idle

terminates with:

  #0  0x00007ffff56b7685 in __strlen_avx2 () from /lib64/libc.so.6
  #1  0x00007ffff55e3802 in strdup () from /lib64/libc.so.6
  #2  0x00005555558cb139 in hist_entry__init (callchain_size=<optimized out>, sample_self=true, template=0x7fffde7fb110, he=0x7fffd801c250) at util/hist.c:489
  #3  hist_entry__new (template=template@entry=0x7fffde7fb110, sample_self=sample_self@entry=true) at util/hist.c:564
  #4  0x00005555558cb4ba in hists__findnew_entry (hists=hists@entry=0x5555561d9e38, entry=entry@entry=0x7fffde7fb110, al=al@entry=0x7fffde7fb420,
      sample_self=sample_self@entry=true) at util/hist.c:657
  #5  0x00005555558cba1b in __hists__add_entry (hists=hists@entry=0x5555561d9e38, al=0x7fffde7fb420, sym_parent=<optimized out>, bi=bi@entry=0x0, mi=mi@entry=0x0,
      sample=sample@entry=0x7fffde7fb4b0, sample_self=true, ops=0x0, block_info=0x0) at util/hist.c:288
  #6  0x00005555558cbb70 in hists__add_entry (sample_self=true, sample=0x7fffde7fb4b0, mi=0x0, bi=0x0, sym_parent=<optimized out>, al=<optimized out>, hists=0x5555561d9e38)
      at util/hist.c:1056
  #7  iter_add_single_cumulative_entry (iter=0x7fffde7fb460, al=<optimized out>) at util/hist.c:1056
  #8  0x00005555558cc8a4 in hist_entry_iter__add (iter=iter@entry=0x7fffde7fb460, al=al@entry=0x7fffde7fb420, max_stack_depth=<optimized out>, arg=arg@entry=0x7fffffff7db0)
      at util/hist.c:1231
  #9  0x00005555557cdc9a in perf_event__process_sample (machine=<optimized out>, sample=0x7fffde7fb4b0, evsel=<optimized out>, event=<optimized out>, tool=0x7fffffff7db0)
      at builtin-top.c:842
  #10 deliver_event (qe=<optimized out>, qevent=<optimized out>) at builtin-top.c:1202
  #11 0x00005555558a9318 in do_flush (show_progress=false, oe=0x7fffffff80e0) at util/ordered-events.c:244
  #12 __ordered_events__flush (oe=oe@entry=0x7fffffff80e0, how=how@entry=OE_FLUSH__TOP, timestamp=timestamp@entry=0) at util/ordered-events.c:323
  #13 0x00005555558a9789 in __ordered_events__flush (timestamp=<optimized out>, how=<optimized out>, oe=<optimized out>) at util/ordered-events.c:339
  #14 ordered_events__flush (how=OE_FLUSH__TOP, oe=0x7fffffff80e0) at util/ordered-events.c:341
  #15 ordered_events__flush (oe=oe@entry=0x7fffffff80e0, how=how@entry=OE_FLUSH__TOP) at util/ordered-events.c:339
  #16 0x00005555557cd631 in process_thread (arg=0x7fffffff7db0) at builtin-top.c:1114
  #17 0x00007ffff7bb817a in start_thread () from /lib64/libpthread.so.0
  #18 0x00007ffff5656dc3 in clone () from /lib64/libc.so.6

If you look at the frame #2, the code is:

488  if (he->srcline) {
489          he->srcline = strdup(he->srcline);
490          if (he->srcline == NULL)
491              goto err_rawdata;
492  }

If he->srcline is not NULL (it is not NULL if it is uninitialized rubbish),
it gets strdupped and strdupping a rubbish random string causes the problem.

Also, if you look at the commit 1fb7d06a509e, it adds the srcline property
into the struct, but not initializing it everywhere needed.

Committer notes:

Now I see, when using --ignore-callees=do_idle we end up here at line
2189 in add_callchain_ip():

2181         if (al.sym != NULL) {
2182                 if (perf_hpp_list.parent && !*parent &&
2183                     symbol__match_regex(al.sym, &parent_regex))
2184                         *parent = al.sym;
2185                 else if (have_ignore_callees && root_al &&
2186                   symbol__match_regex(al.sym, &ignore_callees_regex)) {
2187                         /* Treat this symbol as the root,
2188                            forgetting its callees. */
2189                         *root_al = al;
2190                         callchain_cursor_reset(cursor);
2191                 }
2192         }

And the al that doesn't have the ->srcline field initialized will be
copied to the root_al, so then, back to:

1211 int hist_entry_iter__add(struct hist_entry_iter *iter, struct addr_location *al,
1212                          int max_stack_depth, void *arg)
1213 {
1214         int err, err2;
1215         struct map *alm = NULL;
1216
1217         if (al)
1218                 alm = map__get(al->map);
1219
1220         err = sample__resolve_callchain(iter->sample, &callchain_cursor, &iter->parent,
1221                                         iter->evsel, al, max_stack_depth);
1222         if (err) {
1223                 map__put(alm);
1224                 return err;
1225         }
1226
1227         err = iter->ops->prepare_entry(iter, al);
1228         if (err)
1229                 goto out;
1230
1231         err = iter->ops->add_single_entry(iter, al);
1232         if (err)
1233                 goto out;
1234

That al at line 1221 is what hist_entry_iter__add() (called from
sample__resolve_callchain()) saw as 'root_al', and then:

        iter->ops->add_single_entry(iter, al);

will go on with al->srcline with a bogus value, I'll add the above
sequence to the cset and apply, thanks!

Signed-off-by: Michael Petlan <mpetlan@redhat.com>
CC: Milian Wolff <milian.wolff@kdab.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Fixes: 1fb7d06a509e ("perf report Use srcline from callchain for hist entries")
Link: https //lore.kernel.org/r/20210719145332.29747-1-mpetlan@redhat.com
Reported-by: Juri Lelli <jlelli@redhat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf script: Fix ip display when type != attr->type
Adrian Hunter [Sat, 11 Sep 2021 13:30:53 +0000 (16:30 +0300)]
perf script: Fix ip display when type != attr->type

set_print_ip_opts() was not being called when type != attr->type
because there is not a one-to-one relationship between output types
and attr->type. That resulted in ip not printing.

The attr_type() function is removed, and the match of attr->type to
output type is corrected.

Example on ADL using taskset to select an atom cpu:

 # perf record -e cpu_atom/cpu-cycles/ taskset 0x1000 uname
 Linux
 [ perf record: Woken up 1 times to write data ]
 [ perf record: Captured and wrote 0.003 MB perf.data (7 samples) ]

 Before:

  # perf script | head
         taskset   428 [-01] 10394.179041:          1 cpu_atom/cpu-cycles/:
         taskset   428 [-01] 10394.179043:          1 cpu_atom/cpu-cycles/:
         taskset   428 [-01] 10394.179044:         11 cpu_atom/cpu-cycles/:
         taskset   428 [-01] 10394.179045:        407 cpu_atom/cpu-cycles/:
         taskset   428 [-01] 10394.179046:      16789 cpu_atom/cpu-cycles/:
         taskset   428 [-01] 10394.179052:     676300 cpu_atom/cpu-cycles/:
           uname   428 [-01] 10394.179278:    4079859 cpu_atom/cpu-cycles/:

 After:

  # perf script | head
         taskset   428 10394.179041:          1 cpu_atom/cpu-cycles/:  ffffffff95a0bb97 __intel_pmu_enable_all.constprop.48+0x47 ([kernel.kallsyms])
         taskset   428 10394.179043:          1 cpu_atom/cpu-cycles/:  ffffffff95a0bb97 __intel_pmu_enable_all.constprop.48+0x47 ([kernel.kallsyms])
         taskset   428 10394.179044:         11 cpu_atom/cpu-cycles/:  ffffffff95a0bb97 __intel_pmu_enable_all.constprop.48+0x47 ([kernel.kallsyms])
         taskset   428 10394.179045:        407 cpu_atom/cpu-cycles/:  ffffffff95a0bb97 __intel_pmu_enable_all.constprop.48+0x47 ([kernel.kallsyms])
         taskset   428 10394.179046:      16789 cpu_atom/cpu-cycles/:  ffffffff95a0bb97 __intel_pmu_enable_all.constprop.48+0x47 ([kernel.kallsyms])
         taskset   428 10394.179052:     676300 cpu_atom/cpu-cycles/:      7f829ef73800 cfree+0x0 (/lib/libc-2.32.so)
           uname   428 10394.179278:    4079859 cpu_atom/cpu-cycles/:  ffffffff95bae912 vma_interval_tree_remove+0x1f2 ([kernel.kallsyms])

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lore.kernel.org/lkml/20210911133053.15682-1-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf annotate: Fix fused instr logic for assembly functions
Ravi Bangoria [Sat, 11 Sep 2021 04:38:53 +0000 (10:08 +0530)]
perf annotate: Fix fused instr logic for assembly functions

Some x86 microarchitectures fuse a subset of cmp/test/ALU instructions
with branch instructions, and thus perf annotate highlight such valid
pairs as fused.

When annotated with source, perf uses struct disasm_line to contain
either source or instruction line from objdump output. Usually, a C
statement generates multiple instructions which include such
cmp/test/ALU + branch instruction pairs. But in case of assembly
function, each individual assembly source line generate one
instruction.

The 'perf annotate' instruction fusion logic assumes the previous
disasm_line as the previous instruction line, which is wrong because,
for assembly function, previous disasm_line contains source line.  And
thus perf fails to highlight valid fused instruction pairs for assembly
functions.

Fix it by searching backward until we find an instruction line and
consider that disasm_line as fused with current branch instruction.

Before:
         │    cmpq    %rcx, RIP+8(%rsp)
    0.00 │      cmp    %rcx,0x88(%rsp)
         │    je      .Lerror_bad_iret      <--- Source line
    0.14 │   ┌──je     b4                   <--- Instruction line
         │   │movl    %ecx, %eax

After:
         │    cmpq    %rcx, RIP+8(%rsp)
    0.00 │   ┌──cmp    %rcx,0x88(%rsp)
         │   │je      .Lerror_bad_iret
    0.14 │   ├──je     b4
         │   │movl    %ecx, %eax

Reviewed-by: Jin Yao <yao.jin@linux.intel.com>
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kim Phillips <kim.phillips@amd.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https //lore.kernel.org/r/20210911043854.8373-1-ravi.bangoria@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoMerge tag 's390-5.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Linus Torvalds [Sat, 18 Sep 2021 19:46:14 +0000 (12:46 -0700)]
Merge tag 's390-5.15-3' of git://git./linux/kernel/git/s390/linux

Pull s390 fixes from Vasily Gorbik:

 - Fix potential out-of-range access during secure boot facility
   detection.

 - Fully validate the VMA before calling follow_pte() in pci code.

 - Remove arch specific WARN_DYNAMIC_STACK config option.

 - Fix zcrypto kernel doc comments.

 - Update defconfigs.

* tag 's390-5.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390: remove WARN_DYNAMIC_STACK
  s390/ap: fix kernel doc comments
  s390: update defconfigs
  s390/sclp: fix Secure-IPL facility detection
  s390/pci_mmio: fully validate the VMA before calling follow_pte()

3 years agoMerge tag 'devicetree-fixes-for-5.15-2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 18 Sep 2021 19:40:55 +0000 (12:40 -0700)]
Merge tag 'devicetree-fixes-for-5.15-2' of git://git./linux/kernel/git/robh/linux

Pull devicetree fixes from Rob Herring:

 - Revert fw_devlink tracking 'phy-handle' links. This broke at least a
   few platforms. A better solution is being worked on.

 - Add Samsung UFS binding which fell thru the cracks

 - Doc reference fixes from Mauro

 - Fix for restricted DMA error handling

* tag 'devicetree-fixes-for-5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  dt-bindings: arm: Fix Toradex compatible typo
  of: restricted dma: Fix condition for rmem init
  dt-bindings: arm: mediatek: mmsys: update mediatek,mmsys.yaml reference
  dt-bindings: net: dsa: sja1105: update nxp,sja1105.yaml reference
  dt-bindings: ufs: Add bindings for Samsung ufs host
  Revert "of: property: fw_devlink: Add support for "phy-handle" property"

3 years agotgafb: clarify dependencies
Linus Torvalds [Sat, 18 Sep 2021 18:15:01 +0000 (11:15 -0700)]
tgafb: clarify dependencies

The TGA boards were based on the DECchip 21030 PCI graphics accelerator
used mainly for alpha, and existed in a TURBOchannel (TC) version for
the DECstation (MIPS) workstations.

However, the config option for the TGA code is a bit confused, and says

depends on FB && (ALPHA || TC)

because people didn't really want to enable the option for random PCI
environments, so the "ALPHA" stands in for that case (while the TC case
is then the MIPS DECstation case).

So that config dependency is kind of a mixture of architecture and bus
choices.  But it's incorrect, in that there were non-PCI-based alpha
hardware, and then the driver just causes warnings:

  drivers/video/fbdev/tgafb.c:1532:13: error: ‘tgafb_unregister’ defined but not used [-Werror=unused-function]
   1532 | static void tgafb_unregister(struct device *dev)
        |             ^~~~~~~~~~~~~~~~
  drivers/video/fbdev/tgafb.c:1387:12: error: ‘tgafb_register’ defined but not used [-Werror=unused-function]
   1387 | static int tgafb_register(struct device *dev)
        |            ^~~~~~~~~~~~~~

so let's make the config option dependencies a bit more explict:

depends on FB
depends on PCI || TC
depends on ALPHA || TC

where that first "FB" is the software configuration dependency, the
second "PCI || TC" is the hardware bus dependency, while that final
"ALPHA || TC" dependency is the "don't bother asking except for these
situations.

We could make that third case have "COMPILE_TEST" as an option, and mark
the register/unregister functions as __maybe_unused, but I'm not sure
it's really worth it.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoalpha: make 'Jensen' IO functions build again
Linus Torvalds [Sat, 18 Sep 2021 17:57:10 +0000 (10:57 -0700)]
alpha: make 'Jensen' IO functions build again

The Jensen IO functions are overly copmplicated because some of the IO
addresses refer to special 'local IO' ports, and they get accessed
differently.

That then makes gcc not actually inline them, and since they were marked
"extern inline" when included through the regular <asm/io.h> path, and
then only marked "inline" when included from sys_jensen.c, you never
necessarily got a body for the IO functions at all.

The intent of the sys_jensen.c code is to actually get the non-inlined
copy generated, so remove the 'inline' from the magic macro that is
supposed to sort this all out.

Also, do not mix 'extern inline' functions (that may or may not be
inlined and will not generate a function body if they are not) with
'static inline' (that _will_ generate a function body when not inlined).
Because gcc will complain about this situation:

   error: ‘jensen_bus_outb’ is static but used in inline function ‘jensen_outb’ which is not static

because gcc basically doesn't know whether to generate a body for that
static inline function or not for that call site.

So make all of these use that __EXTERN_INLINE marker.  Gcc will
generally not inline these things on use, and then generate the function
body out-of-line in sys_jensen.c.

This makes the core IO functions build for the alpha Jensen config.

Not that the rest then builds, because it turns out Jensen also doesn't
enable PCI, which then makes other drievrs very unhappy, but that's a
separate issue.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agospi: Fix tegra20 build with CONFIG_PM=n
Linus Torvalds [Sat, 18 Sep 2021 17:05:06 +0000 (10:05 -0700)]
spi: Fix tegra20 build with CONFIG_PM=n

Without CONFIG_PM enabled, the SET_RUNTIME_PM_OPS() macro ends up being
empty, and the only use of tegra_slink_runtime_{resume,suspend} goes
away, resulting in

  drivers/spi/spi-tegra20-slink.c:1200:12: error: ‘tegra_slink_runtime_resume’ defined but not used [-Werror=unused-function]
   1200 | static int tegra_slink_runtime_resume(struct device *dev)
        |            ^~~~~~~~~~~~~~~~~~~~~~~~~~
  drivers/spi/spi-tegra20-slink.c:1188:12: error: ‘tegra_slink_runtime_suspend’ defined but not used [-Werror=unused-function]
   1188 | static int tegra_slink_runtime_suspend(struct device *dev)
        |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~

mark the functions __maybe_unused to make the build happy.

This hits the alpha allmodconfig build (and others).

Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoksmbd: add validation for FILE_FULL_EA_INFORMATION of smb2_get_info
Namjae Jeon [Sat, 18 Sep 2021 09:45:12 +0000 (18:45 +0900)]
ksmbd: add validation for FILE_FULL_EA_INFORMATION of smb2_get_info

Add validation to check whether req->InputBufferLength is smaller than
smb2_ea_info_req structure size.

Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Cc: Ralph Böhme <slow@samba.org>
Cc: Steve French <smfrench@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
3 years agoksmbd: prevent out of share access
Hyunchul Lee [Fri, 17 Sep 2021 13:14:08 +0000 (22:14 +0900)]
ksmbd: prevent out of share access

Because of .., files outside the share directory
could be accessed. To prevent this, normalize
the given path and remove all . and ..
components.

In addition to the usual large set of regression tests (smbtorture
and xfstests), ran various tests on this to specifically check
path name validation including libsmb2 tests to verify path
normalization:

 ./examples/smb2-ls-async smb://172.30.1.15/homes2/../
 ./examples/smb2-ls-async smb://172.30.1.15/homes2/foo/../
 ./examples/smb2-ls-async smb://172.30.1.15/homes2/foo/../../
 ./examples/smb2-ls-async smb://172.30.1.15/homes2/foo/../
 ./examples/smb2-ls-async smb://172.30.1.15/homes2/foo/..bar/
 ./examples/smb2-ls-async smb://172.30.1.15/homes2/foo/bar../
 ./examples/smb2-ls-async smb://172.30.1.15/homes2/foo/bar..
 ./examples/smb2-ls-async smb://172.30.1.15/homes2/foo/bar../../../../

Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
3 years agocifs: Not to defer close on file when lock is set
Rohith Surabattula [Fri, 17 Sep 2021 21:50:40 +0000 (16:50 -0500)]
cifs: Not to defer close on file when lock is set

Close file immediately when lock is set.

Cc: stable@vger.kernel.org # 5.13+
Signed-off-by: Rohith Surabattula <rohiths@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
3 years agocifs: Fix soft lockup during fsstress
Rohith Surabattula [Fri, 17 Sep 2021 17:29:42 +0000 (17:29 +0000)]
cifs: Fix soft lockup during fsstress

Below traces are observed during fsstress and system got hung.
[  130.698396] watchdog: BUG: soft lockup - CPU#6 stuck for 26s!

Cc: stable@vger.kernel.org # 5.13+
Signed-off-by: Rohith Surabattula <rohiths@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
3 years agocifs: Deferred close performance improvements
Rohith Surabattula [Fri, 17 Sep 2021 18:14:26 +0000 (18:14 +0000)]
cifs: Deferred close performance improvements

During unlink/rename instead of closing all the deferred handles
under tcon, close only handles under the requested dentry.

Signed-off-by: Rohith Surabattula <rohiths@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
3 years agodt-bindings: arm: Fix Toradex compatible typo
David Heidelberg [Sun, 12 Sep 2021 16:51:20 +0000 (18:51 +0200)]
dt-bindings: arm: Fix Toradex compatible typo

Fix board compatible typo reported by dtbs_check.

Fixes: f4d1577e9bc6 ("dt-bindings: arm: Convert Tegra board/soc bindings to json-schema")
Signed-off-by: David Heidelberg <david@ixit.cz>
Link: https://lore.kernel.org/r/20210912165120.188490-1-david@ixit.cz
Signed-off-by: Rob Herring <robh@kernel.org>
3 years agoof: restricted dma: Fix condition for rmem init
David Brazdil [Fri, 17 Sep 2021 13:14:23 +0000 (14:14 +0100)]
of: restricted dma: Fix condition for rmem init

of_dma_set_restricted_buffer fails to handle negative return values from
of_property_count_elems_of_size, e.g. when the property does not exist.
This results in an attempt to assign a non-existent reserved memory
region to the device and a warning being printed. Fix the condition to
take negative values into account.

Fixes: f3cfd136aef0 ("of: restricted dma: Don't fail device probe on rmem init failure")
Cc: Will Deacon <will@kernel.org>
Signed-off-by: David Brazdil <dbrazdil@google.com>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20210917131423.2760155-1-dbrazdil@google.com
Signed-off-by: Rob Herring <robh@kernel.org>
3 years agoMerge tag 'pm-5.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Fri, 17 Sep 2021 19:05:04 +0000 (12:05 -0700)]
Merge tag 'pm-5.15-rc2' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix two cpufreq issues, one in the intel_pstate driver and one
  in the core.

  Specifics:

   - Prevent intel_pstate from avoiding to use HWP, even if instructed
     to do so via the kernel command line, when HWP has been enabled
     already by the platform firmware (Doug Smythies).

   - Prevent use-after-free from occurring in the schedutil cpufreq
     governor on exit by fixing a core helper function that attempts to
     access memory associated with a kobject after calling kobject_put()
     on it (James Morse)"

* tag 'pm-5.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: schedutil: Destroy mutex before kobject_put() frees the memory
  cpufreq: intel_pstate: Override parameters if HWP forced by BIOS

3 years agoMerge tag 'dma-mapping-5.15-1' of git://git.infradead.org/users/hch/dma-mapping
Linus Torvalds [Fri, 17 Sep 2021 18:54:48 +0000 (11:54 -0700)]
Merge tag 'dma-mapping-5.15-1' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping fixes from Christoph Hellwig:

 - page align size in sparc32 arch_dma_alloc (Andreas Larsson)

 - tone down a new dma-debug message (Hamza Mahfooz)

 - fix the kerneldoc for dma_map_sg_attrs (me)

* tag 'dma-mapping-5.15-1' of git://git.infradead.org/users/hch/dma-mapping:
  sparc32: page align size in arch_dma_alloc
  dma-debug: prevent an error message from causing runtime problems
  dma-mapping: fix the kerneldoc for dma_map_sg_attrs

3 years agoMerge tag 'pci-v5.15-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
Linus Torvalds [Fri, 17 Sep 2021 18:42:31 +0000 (11:42 -0700)]
Merge tag 'pci-v5.15-fixes-1' of git://git./linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:

 - Defer VPD sizing until we actually need the contents; fixes a
   boot-time slowdown reported by Dave Jones (Bjorn Helgaas)

 - Stop clobbering OF fwnodes when we look for an ACPI fwnode; fixes a
   virtio-iommu boot regression (Jean-Philippe Brucker)

 - Add AMD GPU multi-function power dependencies; fixes runtime power
   management, including GPU resume and temp and fan sensor issues (Evan
   Quan)

 - Update VMD maintainer to Nirmal Patel (Jon Derrick)

* tag 'pci-v5.15-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  MAINTAINERS: Add Nirmal Patel as VMD maintainer
  PCI: Add AMD GPU multi-function power dependencies
  PCI/ACPI: Don't reset a fwnode set by OF
  PCI/VPD: Defer VPD sizing until first access

3 years agoMerge tag 'iov_iter.3-5.15-2021-09-17' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 17 Sep 2021 16:23:44 +0000 (09:23 -0700)]
Merge tag 'iov_iter.3-5.15-2021-09-17' of git://git.kernel.dk/linux-block

Pull io_uring iov_iter retry fixes from Jens Axboe:
 "This adds a helper to save/restore iov_iter state, and modifies
  io_uring to use it.

  After that is done, we can now kill the iter->truncated addition that
  we added for this release. The io_uring change is being overly
  cautious with the save/restore/advance, but better safe than sorry and
  we can always improve that and reduce the overhead if it proves to be
  of concern. The only case to be worried about in this regard is huge
  IO, where iteration can take a while to iterate segments.

  I spent some time writing test cases, and expanded the coverage quite
  a bit from the last posting of this. liburing carries this regression
  test case now:

      https://git.kernel.dk/cgit/liburing/tree/test/file-verify.c

  which exercises all of this. It now also supports provided buffers,
  and explicitly tests for end-of-file/device truncation as well.

  On top of that, Pavel sanitized the IOPOLL retry path to follow the
  exact same pattern as normal IO"

* tag 'iov_iter.3-5.15-2021-09-17' of git://git.kernel.dk/linux-block:
  io_uring: move iopoll reissue into regular IO path
  Revert "iov_iter: track truncated size"
  io_uring: use iov_iter state save/restore helpers
  iov_iter: add helper to save iov_iter state

3 years agoMerge tag 'io_uring-5.15-2021-09-17' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 17 Sep 2021 16:19:59 +0000 (09:19 -0700)]
Merge tag 'io_uring-5.15-2021-09-17' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "Mostly fixes for regressions in this cycle, but also a few fixes that
  predate this release.

  The odd one out is a tweak to the direct files added in this release,
  where attempting to reuse a slot is allowed instead of needing an
  explicit removal of that slot first. It's a considerable improvement
  in usability to that API, hence I'm sending it for -rc2.

   - io-wq race fix and cleanup (Hao)

   - loop_rw_iter() type fix

   - SQPOLL max worker race fix

   - Allow poll arm for O_NONBLOCK files, fixing a case where it's
     impossible to properly use io_uring if you cannot modify the file
     flags

   - Allow direct open to simply reuse a slot, instead of needing it
     explicitly removed first (Pavel)

   - Fix a case where we missed signal mask restoring in cqring_wait, if
     we hit -EFAULT (Xiaoguang)"

* tag 'io_uring-5.15-2021-09-17' of git://git.kernel.dk/linux-block:
  io_uring: allow retry for O_NONBLOCK if async is supported
  io_uring: auto-removal for direct open/accept
  io_uring: fix missing sigmask restore in io_cqring_wait()
  io_uring: pin SQPOLL data before unlocking ring lock
  io-wq: provide IO_WQ_* constants for IORING_REGISTER_IOWQ_MAX_WORKERS arg items
  io-wq: fix potential race of acct->nr_workers
  io-wq: code clean of io_wqe_create_worker()
  io_uring: ensure symmetry in handling iter types in loop_rw_iter()

3 years agoMerge tag 'block-5.15-2021-09-17' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 17 Sep 2021 16:16:59 +0000 (09:16 -0700)]
Merge tag 'block-5.15-2021-09-17' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - NVMe pull request via Christoph:
       - fix ANA state updates when a namespace is not present (Anton
         Eidelman)
       - nvmet: fix a width vs precision bug in
         nvmet_subsys_attr_serial_show (Dan Carpenter)
       - avoid race in shutdown namespace removal (Daniel Wagner)
       - fix io_work priority inversion in nvme-tcp (Keith Busch)
       - destroy cm id before destroy qp to avoid use after free (Ruozhu
         Li)

 - blk-integrity profile registration fixes (Christoph, Lihong)

 - blk-cgroup UAF fix (Li)

 - blk-mq tag iterator fix (Ming)

 - blkcg memory leak fix (Yanfei)

* tag 'block-5.15-2021-09-17' of git://git.kernel.dk/linux-block:
  blk-cgroup: fix UAF by grabbing blkcg lock before destroying blkg pd
  blkcg: fix memory leak in blk_iolatency_init
  nvme: remove the call to nvme_update_disk_info in nvme_ns_remove
  block: flush the integrity workqueue in blk_integrity_unregister
  block: check if a profile is actually registered in blk_integrity_unregister
  nvme-tcp: fix io_work priority inversion
  nvme-rdma: destroy cm id before destroy qp to avoid use after free
  nvme-multipath: fix ANA state updates when a namespace is not present
  nvme: avoid race in shutdown namespace removal
  nvmet: fix a width vs precision bug in nvmet_subsys_attr_serial_show()
  blk-mq: avoid to iterate over stale request

3 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 17 Sep 2021 15:59:27 +0000 (08:59 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes and cleanups from Catalin Marinas:

 - Fix the memset() size when re-initialising the SVE state.

 - Mark __stack_chk_guard as __ro_after_init.

 - Remove duplicate include.

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: Mark __stack_chk_guard as __ro_after_init
  arm64/kernel: remove duplicate include in process.c
  arm64/sve: Use correct size when reinitialising SVE state

3 years agoMerge tag 'for-linus-5.15b-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 17 Sep 2021 15:31:49 +0000 (08:31 -0700)]
Merge tag 'for-linus-5.15b-rc2-tag' of git://git./linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:

 - The first hunk of a Xen swiotlb fixup series fixing multiple minor
   issues and doing some small cleanups

 - Some further Xen related fixes avoiding WARN() splats when running as
   Xen guests or dom0

 - A Kconfig fix allowing the pvcalls frontend to be built as a module

* tag 'for-linus-5.15b-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  swiotlb-xen: drop DEFAULT_NSLABS
  swiotlb-xen: arrange to have buffer info logged
  swiotlb-xen: drop leftover __ref
  swiotlb-xen: limit init retries
  swiotlb-xen: suppress certain init retries
  swiotlb-xen: maintain slab count properly
  swiotlb-xen: fix late init retry
  swiotlb-xen: avoid double free
  xen/pvcalls: backend can be a module
  xen: fix usage of pmd_populate in mremap for pv guests
  xen: reset legacy rtc flag for PV domU
  PM: base: power: don't try to use non-existing RTC for storing data
  xen/balloon: use a kernel thread instead a workqueue

3 years agoksmbd: transport_rdma: Don't include rwlock.h directly
Mike Galbraith [Sun, 12 Sep 2021 02:56:26 +0000 (11:56 +0900)]
ksmbd: transport_rdma: Don't include rwlock.h directly

rwlock.h specifically asks to not be included directly.

In fact, the proper spinlock.h include isn't needed either,
it comes with the huge pile that kthread.h ends up pulling
in, so just drop it entirely.

Signed-off-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
3 years agoregulator: max14577: Revert "regulator: max14577: Add proper module aliases strings"
Krzysztof Kozlowski [Thu, 16 Sep 2021 14:41:02 +0000 (16:41 +0200)]
regulator: max14577: Revert "regulator: max14577: Add proper module aliases strings"

This reverts commit 0da6736ecd10b45e535b100acd58df2db4c099d8.

The MODULE_DEVICE_TABLE already creates proper alias.  Having another
MODULE_ALIAS causes the alias to be duplicated:

  $ modinfo max14577-regulator.ko

  alias:          platform:max77836-regulator
  alias:          platform:max14577-regulator
  description:    Maxim 14577/77836 regulator driver
  alias:          platform:max77836-regulator
  alias:          platform:max14577-regulator

Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 0da6736ecd10 ("regulator: max14577: Add proper module aliases strings")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20210916144102.120980-1-krzysztof.kozlowski@canonical.com
Signed-off-by: Mark Brown <broonie@kernel.org>
3 years agoperf record: Add --synth option
Namhyung Kim [Wed, 11 Aug 2021 04:46:58 +0000 (21:46 -0700)]
perf record: Add --synth option

Add an option to control the synthesizing behavior.

    --synth <no|all|task|mmap|cgroup>
                      Fine-tune event synthesis: default=all

This can be useful when we know it doesn't need some synthesis like
in a specific usecase and/or when using pipe:

  $ perf record -a --all-cgroups --synth cgroup -o- sleep 1 | \
  > perf report -i- -s cgroup

Committer notes:

Added a clarification to the man page entry for --synth that this is
about pre-existing threads.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https //lore.kernel.org/r/20210811044658.1313391-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf tools: Allow controlling synthesizing PERF_RECORD_ metadata events during record
Namhyung Kim [Wed, 11 Aug 2021 04:46:57 +0000 (21:46 -0700)]
perf tools: Allow controlling synthesizing PERF_RECORD_ metadata events during record

Depending on the use case, it might require some kind of synthesizing
and some not.  Make it controllable to turn off heavy operations like
MMAP for all tasks.

Currently all users are converted to enable all the synthesis by
default.  It'll be updated in the later patch.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https //lore.kernel.org/r/20210811044658.1313391-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agodt-bindings: arm: mediatek: mmsys: update mediatek,mmsys.yaml reference
Mauro Carvalho Chehab [Thu, 16 Sep 2021 09:55:02 +0000 (11:55 +0200)]
dt-bindings: arm: mediatek: mmsys: update mediatek,mmsys.yaml reference

Changeset cba3c40d1f97 ("dt-bindings: arm: mediatek: mmsys: convert to YAML format")
renamed: Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.txt
to: Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml.

Update its cross-reference accordingly.

Fixes: cba3c40d1f97 ("dt-bindings: arm: mediatek: mmsys: convert to YAML format")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/a87eb079a73e8ab41cdf6e40e80b1d1f868da6bd.1631785820.git.mchehab+huawei@kernel.org
3 years agodt-bindings: net: dsa: sja1105: update nxp,sja1105.yaml reference
Mauro Carvalho Chehab [Thu, 16 Sep 2021 09:55:01 +0000 (11:55 +0200)]
dt-bindings: net: dsa: sja1105: update nxp,sja1105.yaml reference

Changeset 62568bdbe6f6 ("dt-bindings: net: dsa: sja1105: convert to YAML schema")
renamed: Documentation/devicetree/bindings/net/dsa/sja1105.txt
to: Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml.

Update its cross-reference accordingly.

Fixes: 62568bdbe6f6 ("dt-bindings: net: dsa: sja1105: convert to YAML schema")
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/994ce6c6358746ff600459822b9f6e336db933c9.1631785820.git.mchehab+huawei@kernel.org
3 years agoMerge tag 'drm-fixes-2021-09-17' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Thu, 16 Sep 2021 20:28:52 +0000 (13:28 -0700)]
Merge tag 'drm-fixes-2021-09-17' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Slightly busier than usual rc2, but mostly scattered amdgpu fixes,
  some i915 and etnaviv resolves an MMU/runtime PM blowup.

  amdgpu:
   - UBSAN fix
   - Powerplay table update fix
   - Fix use after free in BO moves
   - Debugfs init fixes
   - vblank workqueue fixes for headless devices
   - FPU fixes
   - sysfs_emit fixes
   - SMU updates for cyan skillfish
   - Backlight fixes when DMCU is not initialized
   - DP MST fixes
   - HDCP compliance fix
   - Link training fix
   - Runtime pm fix
   - Panel orientation fixes
   - Display GPUVM fix for yellow carp
   - Add missing license

  amdkfd:
   - Drop PCI atomics requirement if proper firmware is available
   - Suspend/resume fixes for IOMMUv2 cases

  radeon:
   - AGP fix

  i915:
   - Propagate DP link training error returns
   - Use max link params for eDP 1.3 and earlier
   - Build warning fixes
   - Gem selftest fixes
   - Ensure wakeref is held before hardware access

  etnaviv:
   - MMU context vs runtime PM fix"

* tag 'drm-fixes-2021-09-17' of git://anongit.freedesktop.org/drm/drm: (44 commits)
  drm/amdgpu/display: add a proper license to dc_link_dp.c
  drm/amd/display: Fix white screen page fault for gpuvm
  amd/display: enable panel orientation quirks
  drm/amdgpu: Demote TMZ unsupported log message from warning to info
  drm/amdgpu: Drop inline from amdgpu_ras_eeprom_max_record_count
  drm/amd/pm: fix runpm hang when amdgpu loaded prior to sound driver
  drm/radeon: pass drm dev radeon_agp_head_init directly
  drm/amdgpu: move iommu_resume before ip init/resume
  drm/amdgpu: add amdgpu_amdkfd_resume_iommu
  drm/amdkfd: separate kfd_iommu_resume from kfd_resume
  drm/amd/display: Link training retry fix for abort case
  drm/amd/display: Fix unstable HPCP compliance on Chrome Barcelo
  drm/amd/display: dsc mst 2 4K displays go dark with 2 lane HBR3
  drm/amd/display: Get backlight from PWM if DMCU is not initialized
  drm/amdkfd: make needs_pcie_atomics FW-version dependent
  drm/amdgpu: add manual sclk/vddc setting support for cyan skilfish(v3)
  drm/amdgpu: add some pptable funcs for cyan skilfish(v3)
  drm/amdgpu: update SMU driver interface for cyan skilfish(v3)
  drm/amdgpu: update SMU PPSMC for cyan skilfish
  drm/amdgpu: fix sysfs_emit/sysfs_emit_at warnings(v2)
  ...

3 years agoMerge tag 'net-5.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Linus Torvalds [Thu, 16 Sep 2021 20:05:42 +0000 (13:05 -0700)]
Merge tag 'net-5.15-rc2' of git://git./linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from bpf.

  Current release - regressions:

   - vhost_net: fix OoB on sendmsg() failure

   - mlx5: bridge, fix uninitialized variable usage

   - bnxt_en: fix error recovery regression

  Current release - new code bugs:

   - bpf, mm: fix lockdep warning triggered by stack_map_get_build_id_offset()

  Previous releases - regressions:

   - r6040: restore MDIO clock frequency after MAC reset

   - tcp: fix tp->undo_retrans accounting in tcp_sacktag_one()

   - dsa: flush switchdev workqueue before tearing down CPU/DSA ports

  Previous releases - always broken:

   - ptp: dp83640: don't define PAGE0, avoid compiler warning

   - igc: fix tunnel segmentation offloads

   - phylink: update SFP selected interface on advertising changes

   - stmmac: fix system hang caused by eee_ctrl_timer during suspend/resume

   - mlx5e: fix mutual exclusion between CQE compression and HW TS

  Misc:

   - bpf, cgroups: fix cgroup v2 fallback on v1/v2 mixed mode

   - sfc: fallback for lack of xdp tx queues

   - hns3: add option to turn off page pool feature"

* tag 'net-5.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (67 commits)
  mlxbf_gige: clear valid_polarity upon open
  igc: fix tunnel offloading
  net/{mlx5|nfp|bnxt}: Remove unnecessary RTNL lock assert
  net: wan: wanxl: define CROSS_COMPILE_M68K
  selftests: nci: replace unsigned int with int
  net: dsa: flush switchdev workqueue before tearing down CPU/DSA ports
  Revert "net: phy: Uniform PHY driver access"
  net: dsa: destroy the phylink instance on any error in dsa_slave_phy_setup
  ptp: dp83640: don't define PAGE0
  bnx2x: Fix enabling network interfaces without VFs
  Revert "Revert "ipv4: fix memory leaks in ip_cmsg_send() callers""
  tcp: fix tp->undo_retrans accounting in tcp_sacktag_one()
  net-caif: avoid user-triggerable WARN_ON(1)
  bpf, selftests: Add test case for mixed cgroup v1/v2
  bpf, selftests: Add cgroup v1 net_cls classid helpers
  bpf, cgroups: Fix cgroup v2 fallback on v1/v2 mixed mode
  bpf: Add oversize check before call kvcalloc()
  net: hns3: fix the timing issue of VF clearing interrupt sources
  net: hns3: fix the exception when query imp info
  net: hns3: disable mac in flr process
  ...

3 years agoMerge tag 'amd-drm-fixes-5.15-2021-09-16' of https://gitlab.freedesktop.org/agd5f...
Dave Airlie [Thu, 16 Sep 2021 19:58:55 +0000 (05:58 +1000)]
Merge tag 'amd-drm-fixes-5.15-2021-09-16' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes

amd-drm-fixes-5.15-2021-09-16:

amdgpu:
- UBSAN fix
- Powerplay table update fix
- Fix use after free in BO moves
- Debugfs init fixes
- vblank workqueue fixes for headless devices
- FPU fixes
- sysfs_emit fixes
- SMU updates for cyan skillfish
- Backlight fixes when DMCU is not initialized
- DP MST fixes
- HDCP compliance fix
- Link training fix
- Runtime pm fix
- Panel orientation fixes
- Display GPUVM fix for yellow carp
- Add missing license

amdkfd:
- Drop PCI atomics requirement if proper firmware is available
- Suspend/resume fixes for IOMMUv2 cases

radeon:
- AGP fix

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210916140611.59816-1-alexander.deucher@amd.com
3 years agoMerge tag 'drm-intel-fixes-2021-09-16' of ssh://git.freedesktop.org/git/drm/drm-intel...
Dave Airlie [Thu, 16 Sep 2021 19:53:52 +0000 (05:53 +1000)]
Merge tag 'drm-intel-fixes-2021-09-16' of ssh://git.freedesktop.org/git/drm/drm-intel into drm-fixes

drm/i915 fixes for v5.15-rc2:
- Propagate DP link training error returns
- Use max link params for eDP 1.3 and earlier
- Build warning fixes
- Gem selftest fixes
- Ensure wakeref is held before hardware access

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/8735q4wsu7.fsf@intel.com
3 years agonet: 6pack: Fix tx timeout and slot time
Guenter Roeck [Thu, 9 Sep 2021 03:57:43 +0000 (20:57 -0700)]
net: 6pack: Fix tx timeout and slot time

tx timeout and slot time are currently specified in units of HZ.  On
Alpha, HZ is defined as 1024.  When building alpha:allmodconfig, this
results in the following error message.

  drivers/net/hamradio/6pack.c: In function 'sixpack_open':
  drivers/net/hamradio/6pack.c:71:41: error:
   unsigned conversion from 'int' to 'unsigned char'
   changes value from '256' to '0'

In the 6PACK protocol, tx timeout is specified in units of 10 ms and
transmitted over the wire:

    https://www.linux-ax25.org/wiki/6PACK

Defining a value dependent on HZ doesn't really make sense, and
presumably comes from the (very historical) situation where HZ was
originally 100.

Note that the SIXP_SLOTTIME use explicitly is about 10ms granularity:

        mod_timer(&sp->tx_t, jiffies + ((when + 1) * HZ) / 100);

and the SIXP_TXDELAY walue is sent as a byte over the wire.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge branch 'etnaviv/fixes' of https://git.pengutronix.de/git/lst/linux into drm...
Dave Airlie [Thu, 16 Sep 2021 19:30:56 +0000 (05:30 +1000)]
Merge branch 'etnaviv/fixes' of https://git.pengutronix.de/git/lst/linux into drm-fixes

Fixes a very annoying issue where the driver view of the MMU state gets
out of sync with the actual hardware state across a runtime PM cycle,
so we end up restarting the GPU with the wrong (potentially already
freed) MMU context. Hilarity ensues.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Lucas Stach <l.stach@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/729a561b6cfed090457bcc856a9e14ed6209fe21.camel@pengutronix.de
3 years agodrm/rockchip: cdn-dp-core: Make cdn_dp_core_resume __maybe_unused
Arnd Bergmann [Tue, 28 Apr 2020 21:31:24 +0000 (23:31 +0200)]
drm/rockchip: cdn-dp-core: Make cdn_dp_core_resume __maybe_unused

With the new static annotation, the compiler warns when the functions
are actually unused:

   drivers/gpu/drm/rockchip/cdn-dp-core.c:1123:12: error: 'cdn_dp_resume' defined but not used [-Werror=unused-function]
    1123 | static int cdn_dp_resume(struct device *dev)
         |            ^~~~~~~~~~~~~

Mark them __maybe_unused to suppress that warning as well.

[ Not so 'new' static annotations any more, and I removed the part of
  the patch that added __maybe_unused to cdn_dp_suspend(), because it's
  used by the shutdown/remove code.

  So only the resume function ends up possibly unused if CONFIG_PM isn't
  set     - Linus ]

Fixes: 7c49abb4c2f8 ("drm/rockchip: cdn-dp-core: Make cdn_dp_core_suspend/resume static")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agocpufreq: vexpress: Drop unused variable
Guenter Roeck [Thu, 9 Sep 2021 18:47:14 +0000 (11:47 -0700)]
cpufreq: vexpress: Drop unused variable

arm:allmodconfig fails to build with the following error.

  drivers/cpufreq/vexpress-spc-cpufreq.c:454:13: error:
unused variable 'cur_cluster'

Remove the unused variable.

Fixes: bb8c26d9387f ("cpufreq: vexpress: Set CPUFREQ_IS_COOLING_DEV flag")
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoalpha: Declare virt_to_phys and virt_to_bus parameter as pointer to volatile
Guenter Roeck [Thu, 9 Sep 2021 05:00:33 +0000 (22:00 -0700)]
alpha: Declare virt_to_phys and virt_to_bus parameter as pointer to volatile

Some drivers pass a pointer to volatile data to virt_to_bus() and
virt_to_phys(), and that works fine.  One exception is alpha.  This
results in a number of compile errors such as

  drivers/net/wan/lmc/lmc_main.c: In function 'lmc_softreset':
  drivers/net/wan/lmc/lmc_main.c:1782:50: error:
passing argument 1 of 'virt_to_bus' discards 'volatile'
qualifier from pointer target type

  drivers/atm/ambassador.c: In function 'do_loader_command':
  drivers/atm/ambassador.c:1747:58: error:
passing argument 1 of 'virt_to_bus' discards 'volatile'
qualifier from pointer target type

Declare the parameter of virt_to_phys and virt_to_bus as pointer to
volatile to fix the problem.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years ago3com 3c515: make it compile on 64-bit architectures
Linus Torvalds [Thu, 16 Sep 2021 18:14:47 +0000 (11:14 -0700)]
3com 3c515: make it compile on 64-bit architectures

This driver isn't enabled most places because of the ISA config
dependency, but alpha still has it.  And I think the 'Jensen' actually
did have an ISA slot.

However, it doesn't build cleanly, because the "Vortex bus master" code
just casts the skb->data pointer to 'int':

        outl((int) (skb->data), ioaddr + Wn7_MasterAddr);

which is all kinds of broken.  Even on a good old traditional PC/AT it
would be broken because the high bits will be random kernel address
bits, but presumably the hardware ignores those bits.  I mean, it's ISA.
We're talking 16MB dma limits. The "good old days".

Make the build happy with this kind of craziness by using the proper
isa_virt_to_bus() handling that the full bus master code uses anyway
(the Vortex bus mastering is a limited special case).

Who knows, this might even work.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge tag 'for-5.15/parisc-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller...
Linus Torvalds [Thu, 16 Sep 2021 17:32:00 +0000 (10:32 -0700)]
Merge tag 'for-5.15/parisc-4' of git://git./linux/kernel/git/deller/parisc-linux

Pull parisc fix from Helge Deller:
 "Fix a build warning when using the PAGE0 pointer"

* tag 'for-5.15/parisc-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Use absolute_pointer() to define PAGE0

3 years agoMerge tag 'm68k-for-v5.15-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Thu, 16 Sep 2021 17:26:48 +0000 (10:26 -0700)]
Merge tag 'm68k-for-v5.15-tag2' of git://git./linux/kernel/git/geert/linux-m68k

Pull m68k fixes from Geert Uytterhoeven:

 - Warning fixes to mitigate CONFIG_WERROR=y

* tag 'm68k-for-v5.15-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: mvme: Remove overdue #warnings in RTC handling
  m68k: Double cast io functions to unsigned long

3 years agoarm64: Mark __stack_chk_guard as __ro_after_init
Dan Li [Tue, 14 Sep 2021 09:44:02 +0000 (17:44 +0800)]
arm64: Mark __stack_chk_guard as __ro_after_init

__stack_chk_guard is setup once while init stage and never changed
after that.

Although the modification of this variable at runtime will usually
cause the kernel to crash (so does the attacker), it should be marked
as __ro_after_init, and it should not affect performance if it is
placed in the ro_after_init section.

Signed-off-by: Dan Li <ashimida@linux.alibaba.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/1631612642-102881-1-git-send-email-ashimida@linux.alibaba.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
3 years agoarm64/kernel: remove duplicate include in process.c
Lv Ruyi [Thu, 2 Sep 2021 01:11:26 +0000 (18:11 -0700)]
arm64/kernel: remove duplicate include in process.c

Remove all but the first include of linux/sched.h from process.c

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20210902011126.29828-1-lv.ruyi@zte.com.cn
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
3 years agoarm64/sve: Use correct size when reinitialising SVE state
Mark Brown [Thu, 9 Sep 2021 16:53:56 +0000 (17:53 +0100)]
arm64/sve: Use correct size when reinitialising SVE state

When we need a buffer for SVE register state we call sve_alloc() to make
sure that one is there. In order to avoid repeated allocations and frees
we keep the buffer around unless we change vector length and just memset()
it to ensure a clean register state. The function that deals with this
takes the task to operate on as an argument, however in the case where we
do a memset() we initialise using the SVE state size for the current task
rather than the task passed as an argument.

This is only an issue in the case where we are setting the register state
for a task via ptrace and the task being configured has a different vector
length to the task tracing it. In the case where the buffer is larger in
the traced process we will leak old state from the traced process to
itself, in the case where the buffer is smaller in the traced process we
will overflow the buffer and corrupt memory.

Fixes: bc0ee4760364 ("arm64/sve: Core task context handling")
Cc: <stable@vger.kernel.org> # 4.15.x
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20210909165356.10675-1-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
3 years agodt-bindings: ufs: Add bindings for Samsung ufs host
Alim Akhtar [Wed, 15 Sep 2021 11:18:44 +0000 (20:18 +0900)]
dt-bindings: ufs: Add bindings for Samsung ufs host

This patch adds DT bindings for Samsung ufs hci

Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20210915111844.42752-1-chanho61.park@samsung.com
Signed-off-by: Rob Herring <robh@kernel.org>
3 years agodrm/amdgpu/display: add a proper license to dc_link_dp.c
Alex Deucher [Tue, 14 Sep 2021 14:50:47 +0000 (10:50 -0400)]
drm/amdgpu/display: add a proper license to dc_link_dp.c

Was missing.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
3 years agodrm/amd/display: Fix white screen page fault for gpuvm
Nicholas Kazlauskas [Mon, 13 Sep 2021 18:56:44 +0000 (14:56 -0400)]
drm/amd/display: Fix white screen page fault for gpuvm

[Why]
The "base_addr_is_mc_addr" field was added for dcn3.1 support but
pa_config was never updated to set it to false.

Uninitialized memory causes it to be set to true which results in
address mistranslation and white screen.

[How]
Use memset to ensure all fields are initialized to 0 by default.

Fixes: 64b1d0e8d500 ("drm/amd/display: Add DCN3.1 HWSEQ")
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Aaron Liu <aaron.liu@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
3 years agoamd/display: enable panel orientation quirks
Simon Ser [Fri, 10 Sep 2021 15:37:41 +0000 (15:37 +0000)]
amd/display: enable panel orientation quirks

This patch allows panel orientation quirks from DRM core to be
used. They attach a DRM connector property "panel orientation"
which indicates in which direction the panel has been mounted.
Some machines have the internal screen mounted with a rotation.

Since the panel orientation quirks need the native mode from the
EDID, check for it in amdgpu_dm_connector_ddc_get_modes.

Signed-off-by: Simon Ser <contact@emersion.fr>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Harry Wentland <hwentlan@amd.com>
Cc: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
3 years agodrm/amdgpu: Demote TMZ unsupported log message from warning to info
Paul Menzel [Mon, 13 Sep 2021 08:34:11 +0000 (10:34 +0200)]
drm/amdgpu: Demote TMZ unsupported log message from warning to info

As the user cannot do anything about the unsupported Trusted Memory Zone
(TMZ) feature, do not warn about it, but make it informational, so
demote the log level from warning to info.

Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
3 years agodrm/amdgpu: Drop inline from amdgpu_ras_eeprom_max_record_count
Michel Dänzer [Thu, 9 Sep 2021 16:56:28 +0000 (18:56 +0200)]
drm/amdgpu: Drop inline from amdgpu_ras_eeprom_max_record_count

This was unusual; normally, inline functions are declared static as
well, and defined in a header file if used by multiple compilation
units. The latter would be more involved in this case, so just drop
the inline declaration for now.

Fixes compile failure building for ppc64le on RHEL 8:

In file included from ../drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h:32,
                 from ../drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:33:
../drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c: In function ‘amdgpu_ras_recovery_init’:
../drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.h:90:17: error: inlining failed in call
 to ‘always_inline’ ‘amdgpu_ras_eeprom_max_record_count’: function body not available
   90 | inline uint32_t amdgpu_ras_eeprom_max_record_count(void);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:1985:34: note: called from here
 1985 |         max_eeprom_records_len = amdgpu_ras_eeprom_max_record_count();
      |                                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Fixes: c84d46707ebb "drm/amdgpu: validate bad page threshold in ras(v3)"
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Michel Dänzer <mdaenzer@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
3 years agodrm/amd/pm: fix runpm hang when amdgpu loaded prior to sound driver
Evan Quan [Thu, 9 Sep 2021 03:01:00 +0000 (11:01 +0800)]
drm/amd/pm: fix runpm hang when amdgpu loaded prior to sound driver

Current RUNPM mechanism relies on PMFW to master the timing for BACO
in/exit. And that needs cooperation from sound driver for dstate
change notification for function 1(audio). Otherwise(on sound driver
missing), BACO cannot be kicked in correctly and hang will be observed
on RUNPM exit.

By switching back to legacy message way on sound driver missing,
we are able to fix the runpm hang observed for the scenario below:
amdgpu driver loaded -> runpm suspend kicked -> sound driver loaded

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reported-and-tested-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
3 years agodrm/radeon: pass drm dev radeon_agp_head_init directly
Nirmoy Das [Mon, 13 Sep 2021 08:08:23 +0000 (10:08 +0200)]
drm/radeon: pass drm dev radeon_agp_head_init directly

Pass drm dev directly as rdev->ddev gets initialized later on
at radeon_device_init().

Bug: https://bugzilla.kernel.org/show_bug.cgi?id=214375
Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
3 years agodrm/amdgpu: move iommu_resume before ip init/resume
James Zhu [Tue, 7 Sep 2021 15:32:22 +0000 (11:32 -0400)]
drm/amdgpu: move iommu_resume before ip init/resume

Separate iommu_resume from kfd_resume, and move it before
other amdgpu ip init/resume.

Bug: https://bugzilla.kernel.org/show_bug.cgi?id=211277
Signed-off-by: James Zhu <James.Zhu@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org