linux-kernel - Re: [PATCH 5/8] perf test: Add system-wide mode in perf record tests

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Date:   Thu, 20 Oct 2022 17:00:39 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Namhyung Kim <namhyung@...nel.org>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>, Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        linux-perf-users@...r.kernel.org
Subject: Re: [PATCH 5/8] perf test: Add system-wide mode in perf record tests

On Thu, Oct 20, 2022 at 10:26 AM Namhyung Kim <namhyung@...nel.org> wrote:
>
> Add system wide recording test with the same pattern.  It'd skip the
> test when it failes to run perf record.  For system-wide mode, it needs

nit: s/failes/fails/

> to avoid build-id collection and synthesis because the test only cares
> about the test program and kernel would generates necessary events as

nit: s/generates/generate the/

> the process starts.
>
> Reviewed-by: Adrian Hunter <adrian.hunter@...el.com>
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>

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

Thanks,
Ian

> ---
>  tools/perf/tests/shell/record.sh | 21 +++++++++++++++++++++
>  1 file changed, 21 insertions(+)
>
> diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh
> index d1640d1daf2e..345764afb745 100755
> --- a/tools/perf/tests/shell/record.sh
> +++ b/tools/perf/tests/shell/record.sh
> @@ -154,10 +154,31 @@ test_register_capture() {
>    echo "Register capture test [Success]"
>  }
>
> +test_system_wide() {
> +  echo "Basic --system-wide mode test"
> +  if ! perf record -aB --synth=no -o "${perfdata}" ${testprog} 2> /dev/null
> +  then
> +    echo "System-wide record [Skipped not supported]"
> +    if [ $err -ne 1 ]
> +    then
> +      err=2
> +    fi
> +    return
> +  fi
> +  if ! perf report -i "${perfdata}" -q | grep -q "${testsym}"
> +  then
> +    echo "System-wide record [Failed missing output]"
> +    err=1
> +    return
> +  fi
> +  echo "Basic --system-wide mode test [Success]"
> +}
> +
>  build_test_program
>
>  test_per_thread
>  test_register_capture
> +test_system_wide
>
>  cleanup
>  exit $err
> --
> 2.38.0.135.g90850a2211-goog
>