linux-kernel - Re: [PATCH 1/2] perf sched: Prefer sched

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Message-ID: <CAM9d7chu8VOWfQv0dF89U6AaTE7VvwQDJj+V39cMp12k0Q1s_A@mail.gmail.com>
Date:   Tue, 11 Aug 2020 15:42:45 +0900
From:   Namhyung Kim <namhyung@...nel.org>
To:     David Ahern <dsahern@...nel.org>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Jiri Olsa <jolsa@...nel.org>
Subject: Re: [PATCH 1/2] perf sched: Prefer sched_waking event when it exists

Hi David,

On Sat, Aug 8, 2020 at 1:48 AM David Ahern <dsahern@...nel.org> wrote:
>
> Commit fbd705a0c618 ("sched: Introduce the 'trace_sched_waking' tracepoint")
> added sched_waking tracepoint which should be preferred over sched_wakeup
> when analyzing scheduling delays.
>
> Update 'perf sched record' to collect sched_waking events if it exists
> and fallback to sched_wakeup if it does not. Similarly, update timehist
> command to skip sched_wakeup events if the session includes
> sched_waking (ie., sched_waking is preferred over sched_wakeup).
>
> Signed-off-by: David Ahern <dsahern@...nel.org>

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

Thanks

Namhyung