linux-kernel - Re: [PATCH 2/8] perf/core: Add perf_sample_save

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Message-ID: <CAPhsuW5t-9uLXvovdR=wj6o=RZhdaUucj_PkeWqcaSDgbn_q1Q@mail.gmail.com>
Date:   Fri, 13 Jan 2023 12:45:59 -0800
From:   Song Liu <song@...nel.org>
To:     Namhyung Kim <namhyung@...nel.org>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>, x86@...nel.org
Subject: Re: [PATCH 2/8] perf/core: Add perf_sample_save_callchain() helper

On Thu, Jan 12, 2023 at 1:40 PM Namhyung Kim <namhyung@...nel.org> wrote:
>
> When it saves the callchain to the perf sample data, it needs to update
> the sample flags and the dynamic size.  To make sure this, add the
> perf_sample_save_callchain() helper and convert all call sites.
>
> Cc: x86@...nel.org
> Suggested-by: Peter Zijlstra <peterz@...radead.org>
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>

Acked-by: Song Liu <song@...nel.org>