linux-kernel - Re: [PATCH 1/4] perf record: Split --data-mmap option

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Message-ID: <aUKkH82uDY3c0dkB@x1>
Date: Wed, 17 Dec 2025 09:37:51 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Ian Rogers <irogers@...gle.com>
Cc: Namhyung Kim <namhyung@...nel.org>,
	James Clark <james.clark@...aro.org>, Jiri Olsa <jolsa@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>, LKML <linux-kernel@...r.kernel.org>,
	linux-perf-users@...r.kernel.org
Subject: Re: [PATCH 1/4] perf record: Split --data-mmap option

On Wed, Dec 10, 2025 at 02:05:23PM -0800, Ian Rogers wrote:
> On Tue, Dec 9, 2025 at 6:33 PM Namhyung Kim <namhyung@...nel.org> wrote:
> >
> > Currently -d/--data option controls both PERF_SAMPLE_ADDR bit and
> > perf_event_attr.mmap_data flag.  Separate them using new --data-mmap
> > option to support recording only one of them.
> >
> > For data-type profiling, data MMAP is unnecessary but it wastes a lot
> > of space in the ring buffer and data file.
> >
> > Signed-off-by: Namhyung Kim <namhyung@...nel.org>
> 
> Reviewed-by: Ian Rogers <irogers@...gle.com>

Tested the series and applied to perf-tools-next (6.20),

Thanks,

- Arnaldo