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Message-ID: <ZU0Ekh3mrHZImqqk@kernel.org>
Date: Thu, 9 Nov 2023 13:10:58 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Song Liu <song@...nel.org>
Cc: Ian Rogers <irogers@...gle.com>, Song Liu <songliubraving@...com>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
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Andi Kleen <ak@...ux.intel.com>,
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Athira Rajeev <atrajeev@...ux.vnet.ibm.com>,
Huacai Chen <chenhuacai@...nel.org>,
Masami Hiramatsu <mhiramat@...nel.org>,
Vincent Whitchurch <vincent.whitchurch@...s.com>,
"Steinar H. Gunderson" <sesse@...gle.com>,
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liuwenyu <liuwenyu7@...wei.com>, linux-kernel@...r.kernel.org,
linux-perf-users@...r.kernel.org
Subject: Re: [PATCH v4 12/53] perf bpf: Don't synthesize BPF events when
disabled
Em Wed, Nov 08, 2023 at 03:03:15PM -0800, Song Liu escreveu:
> On Wed, Nov 8, 2023 at 8:15 AM Arnaldo Carvalho de Melo <acme@...nel.org> wrote:
> >
> > Em Thu, Nov 02, 2023 at 10:56:54AM -0700, Ian Rogers escreveu:
> > > If BPF sideband events are disabled on the command line, don't
> > > synthesize BPF events too.
> >
> >
> > Interesting, in 71184c6ab7e60fd5 ("perf record: Replace option
> > --bpf-event with --no-bpf-event") we checked that, but only down at
> > perf_event__synthesize_one_bpf_prog(), where we have:
> >
> > if (!opts->no_bpf_event) {
> > /* Synthesize PERF_RECORD_BPF_EVENT */
> > *bpf_event = (struct perf_record_bpf_event)
> >
> >
> > So we better remove that, now redundant check? I'll apply your patch as
> > is and then we can remove that other check.
> >
> > Song, can I have your Acked-by or Reviewed-by, please?
> >
> > - Arnaldo
> >
> > > Signed-off-by: Ian Rogers <irogers@...gle.com>
>
> Good catch!
>
> Acked-by: Song Liu <song@...nel.org>
Thanks, applied the patch with your Acked-by, will revisit this after
this gets published.
- Arnaldo
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