linux-kernel - Re: [PATCH V2] libperf evlist: Fix per-thread mmaps for multi-threaded targets

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Message-ID: <YxdCx6UPU6wI95kc@kernel.org>
Date:   Tue, 6 Sep 2022 09:53:27 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Adrian Hunter <adrian.hunter@...el.com>
Cc:     Jiri Olsa <jolsa@...hat.com>, Namhyung Kim <namhyung@...nel.org>,
        Ian Rogers <irogers@...gle.com>, linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH V2] libperf evlist: Fix per-thread mmaps for
 multi-threaded targets

Em Mon, Sep 05, 2022 at 02:42:09PM +0300, Adrian Hunter escreveu:
> The offending commit removed mmap_per_thread(), which did not consider
> the different set-output rules for per-thread mmaps i.e. in the per-thread
> case set-output is used for file descriptors of the same thread not the
> same cpu.
> 
> Fixes: ae4f8ae16a07 ("libperf evlist: Allow mixing per-thread and per-cpu mmaps")
> Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>

I added these:

Reported-by: Tomáš Trnka <trnka@....com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=216441

Jiri made a comment, can you please reply?

Applied locally for further tests,

Thanks,

- Arnaldo