linux-kernel - Re: [PATCH 3/6] perf test: Test record with --threads option

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Date:   Wed, 7 Sep 2022 10:41:12 -0700
From:   Namhyung Kim <namhyung@...nel.org>
To:     Adrian Hunter <adrian.hunter@...el.com>
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>,
        Ian Rogers <irogers@...gle.com>,
        linux-perf-users <linux-perf-users@...r.kernel.org>
Subject: Re: [PATCH 3/6] perf test: Test record with --threads option

On Wed, Sep 7, 2022 at 6:33 AM Adrian Hunter <adrian.hunter@...el.com> wrote:
>
> On 7/09/22 09:46, Namhyung Kim wrote:
> > @@ -90,6 +90,19 @@ test_per_thread() {
> >      err=1
> >      return
> >    fi
> > +  if ! perf record -e cpu-clock,cs --per-thread --threads=core ${testopt} \
> > +    -o ${perfdata} ${testprog} 2> /dev/null
>
> This does not seem to be possible, because it gives the error:
>
> --per-thread option is mutually exclusive to parallel streaming mode.
> Failed to initialize parallel data streaming masks

Oh, ok.  Let's drop this change then.

Thanks,
Namhyung