linux-kernel - Re: [PATCH 10/11] perf stat: Fix summary output in CSV with --metric-only

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Date:   Mon, 14 Nov 2022 10:20:38 -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 10/11] perf stat: Fix summary output in CSV with --metric-only

On Fri, Nov 11, 2022 at 7:23 PM Namhyung Kim <namhyung@...nel.org> wrote:
>
> It should not print "summary" for each event when --metric-only is set.
>
> Before:
>   $ sudo perf stat -a --per-socket --summary -x, --metric-only true
>    time,socket,cpusGhz,insn per cycle,branch-misses of all branches,
>        0.000709079,S0,8,0.893,2.40,0.45,
>   S0,8,         summary,         summary,         summary,         summary,         summary,0.893,         summary,2.40,         summary,         summary,0.45,
>
> After:
>   $ sudo perf stat -a --per-socket --summary -x, --metric-only true
>    time,socket,cpusGHz,insn per cycle,branch-misses of all branches,
>        0.000882297,S0,8,0.598,1.64,0.64,
>            summary,S0,8,0.598,1.64,0.64,
>
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>

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

Thanks,
Ian

> ---
>  tools/perf/util/stat-display.c | 11 ++++++++---
>  1 file changed, 8 insertions(+), 3 deletions(-)
>
> diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c
> index ce81798b5864..96bb7a42fd41 100644
> --- a/tools/perf/util/stat-display.c
> +++ b/tools/perf/util/stat-display.c
> @@ -549,7 +549,7 @@ static void printout(struct perf_stat_config *config, struct aggr_cpu_id id, int
>         }
>
>         if (!config->no_csv_summary && config->csv_output &&
> -           config->summary && !config->interval) {
> +           config->summary && !config->interval && !config->metric_only) {
>                 fprintf(config->output, "%16s%s", "summary", config->csv_sep);
>         }
>
> @@ -732,8 +732,13 @@ static void print_aggr(struct perf_stat_config *config,
>          * Without each counter has its own line.
>          */
>         for (s = 0; s < config->aggr_map->nr; s++) {
> -               if (prefix && metric_only)
> -                       fprintf(output, "%s", prefix);
> +               if (metric_only) {
> +                       if (prefix)
> +                               fprintf(output, "%s", prefix);
> +                       else if (config->summary && !config->no_csv_summary &&
> +                                config->csv_output && !config->interval)
> +                               fprintf(output, "%16s%s", "summary", config->csv_sep);
> +               }
>
>                 first = true;
>                 evlist__for_each_entry(evlist, counter) {
> --
> 2.38.1.493.g58b659f92b-goog
>