linux-kernel - Re: [PATCH v1] perf pfm: Don't force loading of all PMUs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <175346932935.1444596.3621368930739538107.b4-ty@kernel.org>
Date: Fri, 25 Jul 2025 11:48:49 -0700
From: Namhyung Kim <namhyung@...nel.org>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
 Arnaldo Carvalho de Melo <acme@...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>, 
 Jean-Philippe Romain <jean-philippe.romain@...s.st.com>, 
 linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Ian Rogers <irogers@...gle.com>
Subject: Re: [PATCH v1] perf pfm: Don't force loading of all PMUs

On Mon, 21 Jul 2025 18:34:49 -0700, Ian Rogers wrote:
> Force loading all PMUs adds significant cost because DRM and other
> PMUs are loaded, it should also not be required if the pmus__
> functions are used.
> 
> Tested by run perf test, in particular the pfm related tests. Also
> `perf list` is identical before and after.
> 
> [...]
Applied to perf-tools-next, thanks!

Best regards,
Namhyung