linux-kernel - [PATCH 0/4] perf lock contention: Small random fixes

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Date:   Fri, 28 Oct 2022 11:01:24 -0700
From:   Namhyung Kim <namhyung@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Ian Rogers <irogers@...gle.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        linux-perf-users@...r.kernel.org
Subject: [PATCH 0/4] perf lock contention: Small random fixes

Hello,

This is a small update for the perf lock contention command.

The first issue is from msan (memory sanitizer) related to uninitialized
memory access and use of variable length array.

The other is to increase the default stack skip count to find appropriate
callers in most cases.

You can get it from 'perf/lock-con-fix-v1' branch in

  git://git.kernel.org/pub/scm/linux/kernel/git/namhyung/linux-perf.git

Thanks,
Namhyung


Namhyung Kim (4):
  perf lock contention: Fix memory sanitizer issue
  perf lock contention: Check --max-stack option
  perf lock contention: Avoid variable length arrays
  perf lock contention: Increase default stack skip to 4

 tools/perf/builtin-lock.c             | 30 +++++++++++++++++--
 tools/perf/util/bpf_lock_contention.c | 43 ++++++++++++++++++---------
 tools/perf/util/lock-contention.h     |  2 +-
 3 files changed, 57 insertions(+), 18 deletions(-)


base-commit: a3a365655a28f12f07eddf4f3fd596987b175e1d
-- 
2.38.1.273.g43a17bfeac-goog