linux-kernel - Re: [RFCv2 0/7] libperf: Add leader/group info to perf

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Date:   Fri, 9 Jul 2021 08:32:50 +0000
From:   "nakamura.shun@...itsu.com" <nakamura.shun@...itsu.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...hat.com>
CC:     lkml <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Ingo Molnar <mingo@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Michael Petlan <mpetlan@...hat.com>,
        Ian Rogers <irogers@...gle.com>,
        "linux-perf-users@...r.kernel.org" <linux-perf-users@...r.kernel.org>
Subject: Re: [RFCv2 0/7] libperf: Add leader/group info to perf_evsel

Hi Jiri, Arnaldo

Thank you for posting a patch.

> Its all in tmp.perf/core, but from what I saw, yeah, he requested being
> able to have a group leader.
> 
> Nakamura-san, isn't that the case?

Yes, that's right.

With these patches, I think we can use event group to register multiple 
perf events, just like PAPI.
If I find any problems, I will point them out.

Best Regards
Shunsuke