linux-kernel - Re: [PATCH v3 0/4] Add support for a DRM tool like PMU

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Message-ID: <aFnht37mLV6ZFost@google.com>
Date: Mon, 23 Jun 2025 16:22:31 -0700
From: Namhyung Kim <namhyung@...nel.org>
To: Ian Rogers <irogers@...gle.com>
Cc: 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>,
	"Masami Hiramatsu (Google)" <mhiramat@...nel.org>,
	James Clark <james.clark@...aro.org>,
	Weilin Wang <weilin.wang@...el.com>,
	Dominique Martinet <asmadeus@...ewreck.org>,
	Thomas Richter <tmricht@...ux.ibm.com>,
	Junhao He <hejunhao3@...wei.com>,
	Jean-Philippe Romain <jean-philippe.romain@...s.st.com>,
	linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
	dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH v3 0/4] Add support for a DRM tool like PMU

Hi Ian,

On Thu, Apr 03, 2025 at 01:24:35PM -0700, Ian Rogers wrote:
> DRM clients expose information through usage stats as documented in
> Documentation/gpu/drm-usage-stats.rst (available online at
> https://docs.kernel.org/gpu/drm-usage-stats.html). Add a tool like
> PMU, similar to the hwmon PMU, that exposes DRM information.
> 
> v3: Minor tweak to the test so the skip (exit 2) doesn't trigger the
>     trap cleanup.
> 
> v2: Add support to only scan hwmon and drm PMUs if the event or PMU
> wildcard can match. Add a test as requested by Namhyung. Add file
> comments.
> 
> v1:
> https://lore.kernel.org/lkml/20250211071727.364389-1-irogers@google.com/
> 
> Ian Rogers (4):
>   perf parse-events: Avoid scanning PMUs that can't contain events
>   perf parse-events: Avoid scanning PMUs that can't match a wildcard
>   perf drm_pmu: Add a tool like PMU to expose DRM information
>   perf tests: Add a DRM PMU test

Can you please refresh this series?  It doesn't apply cleanly anymore.

Thanks,
Namhyung

> 
>  tools/perf/tests/shell/drm_pmu.sh |  78 ++++
>  tools/perf/util/Build             |   1 +
>  tools/perf/util/drm_pmu.c         | 689 ++++++++++++++++++++++++++++++
>  tools/perf/util/drm_pmu.h         |  39 ++
>  tools/perf/util/evsel.c           |   9 +
>  tools/perf/util/parse-events.c    |  30 +-
>  tools/perf/util/pmu.c             |  15 +
>  tools/perf/util/pmu.h             |   4 +-
>  tools/perf/util/pmus.c            | 101 ++++-
>  tools/perf/util/pmus.h            |   2 +
>  10 files changed, 952 insertions(+), 16 deletions(-)
>  create mode 100755 tools/perf/tests/shell/drm_pmu.sh
>  create mode 100644 tools/perf/util/drm_pmu.c
>  create mode 100644 tools/perf/util/drm_pmu.h
> 
> -- 
> 2.49.0.504.g3bcea36a83-goog
>