linux-kernel - Re: [PATCH 3/6] perf record: Implement basic filtering for off-cpu

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Message-ID: <Yo44AppGsPKvf7Al@kernel.org>
Date:   Wed, 25 May 2022 11:06:58 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Namhyung Kim <namhyung@...nel.org>
Cc:     Ian Rogers <irogers@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Song Liu <songliubraving@...com>, Hao Luo <haoluo@...gle.com>,
        Milian Wolff <milian.wolff@...b.com>,
        bpf <bpf@...r.kernel.org>,
        linux-perf-users <linux-perf-users@...r.kernel.org>,
        Blake Jones <blakejones@...gle.com>
Subject: Re: [PATCH 3/6] perf record: Implement basic filtering for off-cpu

Em Wed, May 25, 2022 at 08:44:38AM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Wed, May 25, 2022 at 08:27:38AM -0300, Arnaldo Carvalho de Melo escreveu:
> > Em Thu, May 19, 2022 at 02:02:28PM -0700, Namhyung Kim escreveu:
> > > On Wed, May 18, 2022 at 9:02 PM Ian Rogers <irogers@...gle.com> wrote:
> > > > Perhaps more concise with a for_each:

> > > > perf_cpu_map__for_each_cpu(cpu, idx, evlist->core.user_requested_cpus)
> > > >   bpf_map_update_elem(fd, &cpu.cpu, &val, BPF_ANY);

> > So I'll wait for a new version of this patchset.

> I take that back, will apply and this can be a follow up patch, right?

I tested it and added some committer notes, everything is now at my
tmp.perf/core branch and will transition to perf/core on its way to 5.19
later today, after tests finish.

- Arnaldo