linux-kernel - Re: [PATCH 01/11] perf stat: Fix crash with --per-node --metric-only in CSV mode

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Date:   Mon, 14 Nov 2022 10:17:22 -0800
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,
        Kan Liang <kan.liang@...ux.intel.com>,
        Zhengjun Xing <zhengjun.xing@...ux.intel.com>,
        James Clark <james.clark@....com>
Subject: Re: [PATCH 01/11] perf stat: Fix crash with --per-node --metric-only
 in CSV mode

On Fri, Nov 11, 2022 at 7:22 PM Namhyung Kim <namhyung@...nel.org> wrote:
>
> The following command will get segfault due to missing aggr_header_csv
> for AGGR_NODE:
>
>   $ sudo perf stat -a --per-node -x, --metric-only true
>
> Fixes: 86895b480a2f ("perf stat: Add --per-node agregation support")
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>

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

Thanks,
Ian

> ---
>  tools/perf/util/stat-display.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c
> index 657434cd29ee..ea41e6308c50 100644
> --- a/tools/perf/util/stat-display.c
> +++ b/tools/perf/util/stat-display.c
> @@ -534,7 +534,7 @@ static void printout(struct perf_stat_config *config, struct aggr_cpu_id id, int
>                         [AGGR_CORE] = 2,
>                         [AGGR_THREAD] = 1,
>                         [AGGR_UNSET] = 0,
> -                       [AGGR_NODE] = 0,
> +                       [AGGR_NODE] = 1,
>                 };
>
>                 pm = config->metric_only ? print_metric_only_csv : print_metric_csv;
> @@ -819,6 +819,7 @@ static int aggr_header_lens[] = {
>         [AGGR_SOCKET] = 12,
>         [AGGR_NONE] = 6,
>         [AGGR_THREAD] = 24,
> +       [AGGR_NODE] = 6,
>         [AGGR_GLOBAL] = 0,
>  };
>
> @@ -828,6 +829,7 @@ static const char *aggr_header_csv[] = {
>         [AGGR_SOCKET]   =       "socket,cpus",
>         [AGGR_NONE]     =       "cpu,",
>         [AGGR_THREAD]   =       "comm-pid,",
> +       [AGGR_NODE]     =       "node,",
>         [AGGR_GLOBAL]   =       ""
>  };
>
> --
> 2.38.1.493.g58b659f92b-goog
>