linux-kernel - Re: [PATCH v6 7/7] perf test: Add perf_event_attr test for record selected CPUs exclude

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Message-ID: <CAP-5=fUwkL7c0kSR5YRTDDEJmNweMx3U1Xfxovvs5-MFc2WJwg@mail.gmail.com>
Date:   Thu, 24 Aug 2023 22:25:40 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Yang Jihong <yangjihong1@...wei.com>
Cc:     peterz@...radead.org, mingo@...hat.com, acme@...nel.org,
        mark.rutland@....com, alexander.shishkin@...ux.intel.com,
        jolsa@...nel.org, namhyung@...nel.org, adrian.hunter@...el.com,
        kan.liang@...ux.intel.com, james.clark@....com,
        tmricht@...ux.ibm.com, ak@...ux.intel.com,
        anshuman.khandual@....com, linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org
Subject: Re: [PATCH v6 7/7] perf test: Add perf_event_attr test for record
 selected CPUs exclude_user

On Sun, Aug 20, 2023 at 6:30 PM Yang Jihong <yangjihong1@...wei.com> wrote:
>
> If all (non-dummy) evsel have exclude_user, system_wide sideband is not
> needed. Add this test scenario.
>
> Test result:
>
>   # ./perf test list 2>&1 | grep 'Setup struct perf_event_attr'
>    17: Setup struct perf_event_attr
>   # ./perf test 17 -v
>    17: Setup struct perf_event_attr                                    :
>   --- start ---
>   test child forked, pid 720198
>   <SNIP>
>   running './tests/attr/test-record-C0-all-kernel'
>   <SNIP>
>   test child finished with 0
>   ---- end ----
>   Setup struct perf_event_attr: Ok
>
> Signed-off-by: Yang Jihong <yangjihong1@...wei.com>
> Tested-by: Adrian Hunter <adrian.hunter@...el.com>

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

Thanks,
Ian

> ---
>  .../perf/tests/attr/test-record-C0-all-kernel | 32 +++++++++++++++++++
>  1 file changed, 32 insertions(+)
>  create mode 100644 tools/perf/tests/attr/test-record-C0-all-kernel
>
> diff --git a/tools/perf/tests/attr/test-record-C0-all-kernel b/tools/perf/tests/attr/test-record-C0-all-kernel
> new file mode 100644
> index 000000000000..2d7549277c1e
> --- /dev/null
> +++ b/tools/perf/tests/attr/test-record-C0-all-kernel
> @@ -0,0 +1,32 @@
> +[config]
> +command = record
> +args    = --no-bpf-event --all-kernel -C 0 kill >/dev/null 2>&1
> +ret     = 1
> +
> +[event:base-record]
> +cpu=0
> +
> +# no enable on exec for CPU attached
> +enable_on_exec=0
> +
> +# PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_TIME |
> +# PERF_SAMPLE_PERIOD | PERF_SAMPLE_IDENTIFIER
> +# + PERF_SAMPLE_CPU added by -C 0
> +sample_type=65927
> +
> +# Dummy event handles mmaps, comm and task.
> +mmap=0
> +comm=0
> +task=0
> +
> +# exclude_user for all-kernel option
> +exclude_user=1
> +
> +[event:system-wide-dummy]
> +
> +# system_wide is not need for all (non-dummy) events have exclude_user
> +cpu=0
> +
> +# exclude_user for all-kernel option
> +exclude_user=1
> +exclude_kernel=0
> --
> 2.30.GIT
>