linux-kernel - Re: [PATCH v2 2/2] perf record: Save DSO build-ID for synthesizing

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Message-ID: <Yz3LyPfSDPcohoXG@kernel.org>
Date:   Wed, 5 Oct 2022 15:24:08 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Namhyung Kim <namhyung@...nel.org>
Cc:     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>,
        Adrian Hunter <adrian.hunter@...el.com>,
        linux-perf-users <linux-perf-users@...r.kernel.org>
Subject: Re: [PATCH v2 2/2] perf record: Save DSO build-ID for synthesizing

Em Wed, Oct 05, 2022 at 10:50:01AM -0700, Namhyung Kim escreveu:
> On Wed, Sep 21, 2022 at 10:55 AM Namhyung Kim <namhyung@...nel.org> wrote:
> > On Wed, Sep 21, 2022 at 6:50 AM Arnaldo Carvalho de Melo <acme@...nel.org> wrote:
> > > Em Tue, Sep 20, 2022 at 03:28:22PM -0700, Namhyung Kim escreveu:
> > > > When synthesizing MMAP2 with build-id, it'd read the same file repeatedly as
> > > > it has no idea if it's done already.  Maintain a dsos to check that and skip
> > > > the file access if possible.
> > > >
> > > > Signed-off-by: Namhyung Kim <namhyung@...nel.org>
> > > > ---
> > > > v2 change)
> > > >  * Remove perf_event__synthesize_{start,stop} and use machine->dsos  (Adrian)
> > >
> > > Will wait till I merge perf/urgent into perf/core so that this applies.
> 
> I think it's doable now :)

Sure, applied! :-)

- Arnaldo