linux-kernel - Re: [PATCH 4/6] perf test: Add system-wide mode in perf record tests

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Date:   Wed, 7 Sep 2022 18:20:26 +0300
From:   Adrian Hunter <adrian.hunter@...el.com>
To:     Namhyung Kim <namhyung@...nel.org>,
        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>,
        linux-perf-users@...r.kernel.org
Subject: Re: [PATCH 4/6] perf test: Add system-wide mode in perf record tests

On 7/09/22 09:46, Namhyung Kim 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
> to avoid build-id collection and synthesis because the test only cares
> about the test program and kernel would generates necessary events as
> the process starts.
> 
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>

Reviewed-by: Adrian Hunter <adrian.hunter@...el.com>

> ---
>  tools/perf/tests/shell/record.sh | 34 ++++++++++++++++++++++++++++++++
>  1 file changed, 34 insertions(+)
> 
> diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh
> index 3331fb092654..bd4ef60948bd 100755
> --- a/tools/perf/tests/shell/record.sh
> +++ b/tools/perf/tests/shell/record.sh
> @@ -134,10 +134,44 @@ test_register_capture() {
>    echo "Register capture test [Success]"
>  }
>  
> +test_system_wide() {
> +  echo "Basic --system-wide mode test"
> +  if ! perf record -aB --synth=no ${testopt} -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 | egrep -q ${testsym}
> +  then
> +    echo "System-wide record [Failed missing output]"
> +    err=1
> +    return
> +  fi
> +  if ! perf record -aB --synth=no -e cpu-clock,cs --threads=cpu ${testopt} \
> +    -o ${perfdata} ${testprog} 2> /dev/null
> +  then
> +    echo "System-wide test [Failed recording with threads]"
> +    err=1
> +    return
> +  fi
> +  if ! perf report -i ${perfdata} -q | egrep -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