linux-kernel - Re: [PATCH v1] perf test: Expand user space event reading (rdpmc) tests

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Message-Id: <175052888239.2250071.5449360979148529294.b4-ty@kernel.org>
Date: Sat, 21 Jun 2025 11:01:22 -0700
From: Namhyung Kim <namhyung@...nel.org>
To: Kan Liang <kan.liang@...ux.intel.com>, 
 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>, 
 Paul Walmsley <paul.walmsley@...ive.com>, 
 Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>, 
 Alexandre Ghiti <alex@...ti.fr>, Ravi Bangoria <ravi.bangoria@....com>, 
 Howard Chu <howardchu95@...il.com>, linux-perf-users@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Ian Rogers <irogers@...gle.com>
Subject: Re: [PATCH v1] perf test: Expand user space event reading (rdpmc)
 tests

On Fri, 13 Jun 2025 17:45:28 -0700, Ian Rogers wrote:
> Test that disabling rdpmc support via /sys/bus/event_source/cpu*/rdpmc
> disables reading in the mmap (libperf read support will fallback to
> using a system call).
> Test all hybrid PMUs support rdpmc.
> Ensure hybrid PMUs use the correct CPU to rdpmc the correct
> event. Previously the test would open cycles or instructions with no
> extended type then rdpmc it on whatever CPU. This could fail/skip due
> to which CPU the test was scheduled upon.
> 
> [...]
Applied to perf-tools-next, thanks!

Best regards,
Namhyung