linux-kernel - Re: [PATCH] perf parse: Add missing newline to pr_debug message in evsel__compute_group_pmu

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Date:   Tue, 20 Jun 2023 13:32:29 -0700
From:   Namhyung Kim <namhyung@...nel.org>
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, irogers@...gle.com, adrian.hunter@...el.com,
        kan.liang@...ux.intel.com, linux-perf-users@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] perf parse: Add missing newline to pr_debug message in evsel__compute_group_pmu_name()

Hello,

On Thu, Jun 15, 2023 at 7:47 PM Yang Jihong <yangjihong1@...wei.com> wrote:
>
> The newline is missing for pr_debug message in
> evsel__compute_group_pmu_name(), fix it.
>
> Before:
>
>   # perf --debug verbose=2 record -e cpu-clock true
>   <SNIP>
>   No PMU found for 'cycles:u'No PMU found for 'instructions:u'------------------------------------------------------------
>   perf_event_attr:
>     type                             1
>     size                             136
>     { sample_period, sample_freq }   4000
>     sample_type                      IP|TID|TIME|PERIOD
>     read_format                      ID|LOST
>     disabled                         1
>     inherit                          1
>     mmap                             1
>     comm                             1
>     freq                             1
>     enable_on_exec                   1
>     task                             1
>     sample_id_all                    1
>     exclude_guest                    1
>     mmap2                            1
>     comm_exec                        1
>     ksymbol                          1
>     bpf_event                        1
>   ------------------------------------------------------------
>   <SNIP>
>
> After:
>
>   # perf --debug verbose=2 record -e cpu-clock true
>   <SNIP>
>   No PMU found for 'cycles:u'
>   No PMU found for 'instructions:u'
>   ------------------------------------------------------------
>   perf_event_attr:
>     type                             1
>     size                             136
>     { sample_period, sample_freq }   4000
>     sample_type                      IP|TID|TIME|PERIOD
>     read_format                      ID|LOST
>     disabled                         1
>     inherit                          1
>     mmap                             1
>     comm                             1
>     freq                             1
>     enable_on_exec                   1
>     task                             1
>     sample_id_all                    1
>     exclude_guest                    1
>     mmap2                            1
>     comm_exec                        1
>     ksymbol                          1
>     bpf_event                        1
>   ------------------------------------------------------------
>   <SNIP>
>
> Signed-off-by: Yang Jihong <yangjihong1@...wei.com>

Acked-by: Namhyung Kim <namhyung@...nel.org>

Thanks,
Namhyung


> ---
>  tools/perf/util/parse-events.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
> index 2d36cadf35ec..bc7274641f34 100644
> --- a/tools/perf/util/parse-events.c
> +++ b/tools/perf/util/parse-events.c
> @@ -2036,7 +2036,7 @@ static int evsel__compute_group_pmu_name(struct evsel *evsel,
>                 pmu = perf_pmus__scan_core(NULL);
>         }
>         if (!pmu) {
> -               pr_debug("No PMU found for '%s'", evsel__name(evsel));
> +               pr_debug("No PMU found for '%s'\n", evsel__name(evsel));
>                 return -EINVAL;
>         }
>         group_pmu_name = pmu->name;
> --
> 2.30.GIT
>