linux-kernel - Re: [PATCH v2] perf/ftrace: system_wide collection is not effective by default

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Message-ID: <Yf+8+uFpKyjdppOq@kernel.org>
Date:   Sun, 6 Feb 2022 09:20:10 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Namhyung Kim <namhyung@...nel.org>
Cc:     Changbin Du <changbin.du@...il.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>, Jiri Olsa <jolsa@...hat.com>,
        linux-perf-users <linux-perf-users@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] perf/ftrace: system_wide collection is not effective
 by default

Em Tue, Feb 01, 2022 at 08:47:49PM -0800, Namhyung Kim escreveu:
> Hello,
> 
> On Thu, Jan 27, 2022 at 5:20 AM Changbin Du <changbin.du@...il.com> wrote:
> >
> > The ftrace.target.system_wide must be set before invoking
> > evlist__create_maps(), otherwise it has no effect.
> >
> > Fixes: 53be50282269 ("perf ftrace: Add 'latency' subcommand")
> > Signed-off-by: Changbin Du <changbin.du@...il.com>
> 
> Acked-by: Namhyung Kim <namhyung@...il.com>

Thanks, applied.

- Arnaldo