linux-kernel - Re: [PATCH V4 04/17] perf stat: Clear HEADER_CPU_PMU

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Message-ID: <20200417144242.GB17973@kernel.org>
Date:   Fri, 17 Apr 2020 11:42:42 -0300
From:   Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
To:     kan.liang@...ux.intel.com
Cc:     jolsa@...hat.com, peterz@...radead.org, mingo@...hat.com,
        linux-kernel@...r.kernel.org, namhyung@...nel.org,
        adrian.hunter@...el.com, mathieu.poirier@...aro.org,
        ravi.bangoria@...ux.ibm.com, alexey.budankov@...ux.intel.com,
        vitaly.slobodskoy@...el.com, pavel.gerasimov@...el.com,
        mpe@...erman.id.au, eranian@...gle.com, ak@...ux.intel.com
Subject: Re: [PATCH V4 04/17] perf stat: Clear HEADER_CPU_PMU_CAPS

Em Thu, Mar 19, 2020 at 01:25:04PM -0700, kan.liang@...ux.intel.com escreveu:
> From: Kan Liang <kan.liang@...ux.intel.com>
> 
> The CPU PMU capabilities information is only useful for perf record with
> LBR call stack.
> 
> Clear the header for perf stat.

Ditto.
 
> Reviewed-by: Andi Kleen <ak@...ux.intel.com>
> Signed-off-by: Kan Liang <kan.liang@...ux.intel.com>
> ---
>  tools/perf/builtin-stat.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
> index ec053dc1e35c..b5c8a5ab5e75 100644
> --- a/tools/perf/builtin-stat.c
> +++ b/tools/perf/builtin-stat.c
> @@ -1595,6 +1595,7 @@ static void init_features(struct perf_session *session)
>  	perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
>  	perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
>  	perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
> +	perf_header__clear_feat(&session->header, HEADER_CPU_PMU_CAPS);
>  }
>  
>  static int __cmd_record(int argc, const char **argv)
> -- 
> 2.17.1
> 

-- 

- Arnaldo