linux-kernel - Re: [PATCH v3 2/3] perf: Reveal PMU type in fdinfo

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Message-ID: <CAP-5=fW+HDfNcpTkjPwSLezP-XTj9hkPLrwia_JryCr8+Ro0qA@mail.gmail.com>
Date: Mon, 17 Mar 2025 08:42:53 -0700
From: Ian Rogers <irogers@...gle.com>
To: Arnaldo Carvalho de Melo <acme@...nel.org>, Peter Zijlstra <peterz@...radead.org>, 
	Ingo Molnar <mingo@...hat.com>
Cc: Chun-Tse Shao <ctshao@...gle.com>, linux-kernel@...r.kernel.org, 
	Namhyung Kim <namhyung@...nel.org>, Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Adrian Hunter <adrian.hunter@...el.com>, Kan Liang <kan.liang@...ux.intel.com>, 
	Ze Gao <zegao2021@...il.com>, Weilin Wang <weilin.wang@...el.com>, 
	linux-perf-users@...r.kernel.org
Subject: Re: [PATCH v3 2/3] perf: Reveal PMU type in fdinfo

On Tue, Jan 7, 2025 at 11:44 AM Arnaldo Carvalho de Melo
<acme@...nel.org> wrote:
>
> On Wed, Nov 06, 2024 at 12:30:06AM +0000, Chun-Tse Shao wrote:
> > It gives useful info on knowing which PMUs are reserved by this process.
> > Also add config which would be useful.
> > Testing cycles:
>
> I applied the first patch in the series, that already helps, Peter, what
> about this one for the kernel?

Peter, did you have any input on this? I think this is simple value
add with no real downside. I kind of wish the patch did more than just
dumping type and config in fdinfo, but getting those two is a big
start.

Thanks,
Ian