diff options
| author | Ian Rogers <irogers@google.com> | 2024-02-29 23:46:37 -0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2024-03-21 13:54:39 -0300 |
| commit | f68c981be0628e141615aa30575efb687da09a2e (patch) | |
| tree | a9842c413b08828ff8fd98136147d7cd8c73516b /tools/perf/tests | |
| parent | 88ce0106a1f603bf360cb397e8fe293f8298fabb (diff) | |
perf test: Stat output per thread of just the parent process
Per-thread mode requires either system-wide (-a), a pid (-p) or a tid
(-t).
The stat output tests were using system-wide mode but this is racy when
threads are starting and exiting - something that happens a lot when
running the tests in parallel (perf test -p).
Avoid the race conditions by using pid mode with the pid of the parent
process.
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Disha Goel <disgoel@linux.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: K Prateek Nayak <kprateek.nayak@amd.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Yicong Yang <yangyicong@hisilicon.com>
Link: https://lore.kernel.org/r/20240301074639.2260708-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/tests')
| -rw-r--r-- | tools/perf/tests/shell/lib/stat_output.sh | 2 | ||||
| -rwxr-xr-x | tools/perf/tests/shell/stat+json_output.sh | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/tools/perf/tests/shell/lib/stat_output.sh b/tools/perf/tests/shell/lib/stat_output.sh index c81d6a9f7983..9a176ceae4a3 100644 --- a/tools/perf/tests/shell/lib/stat_output.sh +++ b/tools/perf/tests/shell/lib/stat_output.sh @@ -79,7 +79,7 @@ check_per_thread() echo "[Skip] paranoid and not root" return fi - perf stat --per-thread -a $2 true + perf stat --per-thread -p $$ $2 true commachecker --per-thread echo "[Success]" } diff --git a/tools/perf/tests/shell/stat+json_output.sh b/tools/perf/tests/shell/stat+json_output.sh index 2b9c6212dffc..6b630d33c328 100755 --- a/tools/perf/tests/shell/stat+json_output.sh +++ b/tools/perf/tests/shell/stat+json_output.sh @@ -105,7 +105,7 @@ check_per_thread() echo "[Skip] paranoia and not root" return fi - perf stat -j --per-thread -a -o "${stat_output}" true + perf stat -j --per-thread -p $$ -o "${stat_output}" true $PYTHON $pythonchecker --per-thread --file "${stat_output}" echo "[Success]" } |