linux-kernel - Re: [PATCH 8/8] perf test: Add more test cases to sched test

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Message-ID: <CAP-5=fVnFzA7ocHu4ivuc0A=85W-TNhTGUjxnMgBCXX34BrJgQ@mail.gmail.com>
Date: Wed, 2 Jul 2025 20:11:33 -0700
From: Ian Rogers <irogers@...gle.com>
To: Namhyung Kim <namhyung@...nel.org>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>, Kan Liang <kan.liang@...ux.intel.com>, 
	Jiri Olsa <jolsa@...nel.org>, Adrian Hunter <adrian.hunter@...el.com>, 
	Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...nel.org>, 
	LKML <linux-kernel@...r.kernel.org>, linux-perf-users@...r.kernel.org
Subject: Re: [PATCH 8/8] perf test: Add more test cases to sched test

On Wed, Jul 2, 2025 at 6:49 PM Namhyung Kim <namhyung@...nel.org> wrote:
>
>   $ sudo ./perf test -vv 92
>    92: perf sched tests:
>   --- start ---
>   test child forked, pid 1360101
>   Sched record
>   pid 1360105's current affinity list: 0-3
>   pid 1360105's new affinity list: 0
>   pid 1360107's current affinity list: 0-3
>   pid 1360107's new affinity list: 0
>   [ perf record: Woken up 1 times to write data ]
>   [ perf record: Captured and wrote 4.330 MB /tmp/__perf_test_sched.perf.data.b3319 (12246 samples) ]
>   Sched latency
>   Sched script
>   Sched map
>   Sched timehist
>   Samples of sched_switch event do not have callchains.
>   ---- end(0) ----
>    92: perf sched tests                                                : Ok
>
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>

Reviewed-by: Ian Rogers <irogers@...gle.com>

Thanks,
Ian

> ---
>  tools/perf/tests/shell/sched.sh | 39 ++++++++++++++++++++++++++-------
>  1 file changed, 31 insertions(+), 8 deletions(-)
>
> diff --git a/tools/perf/tests/shell/sched.sh b/tools/perf/tests/shell/sched.sh
> index c030126d1a0c918d..b9b81eaf856e6555 100755
> --- a/tools/perf/tests/shell/sched.sh
> +++ b/tools/perf/tests/shell/sched.sh
> @@ -56,38 +56,61 @@ cleanup_noploops() {
>    kill "$PID1" "$PID2"
>  }
>
> -test_sched_latency() {
> -  echo "Sched latency"
> +test_sched_record() {
> +  echo "Sched record"
>
>    start_noploops
>
>    perf sched record --no-inherit -o "${perfdata}" sleep 1
> +
> +  cleanup_noploops
> +}
> +
> +test_sched_latency() {
> +  echo "Sched latency"
> +
>    if ! perf sched latency -i "${perfdata}" | grep -q perf-noploop
>    then
>      echo "Sched latency [Failed missing output]"
>      err=1
>    fi
> -
> -  cleanup_noploops
>  }
>
>  test_sched_script() {
>    echo "Sched script"
>
> -  start_noploops
> -
> -  perf sched record --no-inherit -o "${perfdata}" sleep 1
>    if ! perf sched script -i "${perfdata}" | grep -q perf-noploop
>    then
>      echo "Sched script [Failed missing output]"
>      err=1
>    fi
> +}
>
> -  cleanup_noploops
> +test_sched_map() {
> +  echo "Sched map"
> +
> +  if ! perf sched map -i "${perfdata}" | grep -q perf-noploop
> +  then
> +    echo "Sched map [Failed missing output]"
> +    err=1
> +  fi
> +}
> +
> +test_sched_timehist() {
> +  echo "Sched timehist"
> +
> +  if ! perf sched timehist -i "${perfdata}" | grep -q perf-noploop
> +  then
> +    echo "Sched timehist [Failed missing output]"
> +    err=1
> +  fi
>  }
>
> +test_sched_record
>  test_sched_latency
>  test_sched_script
> +test_sched_map
> +test_sched_timehist
>
>  cleanup
>  exit $err
> --
> 2.50.0.727.gbf7dc18ff4-goog
>