linux-kernel - Re: [PATCH] /bin/dmesg to dmesg Path

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Message-ID: <CAM9d7cjRxp7zSZ0PFCW6xWvcdJhDHynu-eFkfwYXLPXWRqcthA@mail.gmail.com>
Date:   Wed, 4 Oct 2023 21:44:34 -0700
From:   Namhyung Kim <namhyung@...nel.org>
To:     April John <april@...b.dev>
Cc:     linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>, Ian Rogers <irogers@...gle.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        "open list:PERFORMANCE EVENTS SUBSYSTEM" 
        <linux-perf-users@...r.kernel.org>
Subject: Re: [PATCH] /bin/dmesg to dmesg Path

On Mon, Oct 2, 2023 at 9:16 PM Namhyung Kim <namhyung@...nel.org> wrote:
>
> Hello,
>
> On Sun, Oct 1, 2023 at 6:10 AM April John <april@...b.dev> wrote:
> >
> > Dmesg is not in every distro at /bin/dmesg, in NixOS for example, this fails,
> > but the path should in most cases contain dmesg.
> > This follows the example of replacing /bin/bash with bash Path in the codebase.
> >
> > ---
> > tools/perf/util/evsel.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
> > index a8a5ff87c..aa602aae6 100644
> > --- a/tools/perf/util/evsel.c
> > +++ b/tools/perf/util/evsel.c
> > @@ -3053,7 +3053,7 @@ int evsel__open_strerror(struct evsel *evsel, struct target *target,
> >
> > return scnprintf(msg, size,
> > "The sys_perf_event_open() syscall returned with %d (%s) for event (%s).\n"
> > - "/bin/dmesg | grep -i perf may provide additional information.\n",
> > + "dmesg | grep -i perf may provide additional information.\n",
> > err, str_error_r(err, sbuf, sizeof(sbuf)), evsel__name(evsel));
> > }
> >
> > --
> > 2.42.0
> >
> > Signed-off-by: April John <april@...b.dev>
>
> It is usual to put a tag after the patch, it should be at the end of the
> commit message.  With that,
>
> Acked-by: Namhyung Kim <namhyung@...nel.org>

I've tried to apply the patch but it failed.  It looks broken.
Have you generated it using git format-patch ?

Thanks,
Namhyung


  Applying: /bin/dmesg to dmesg Path
  error: corrupt patch at line 11
  Patch failed at 0001 /bin/dmesg to dmesg Path