On Wed, Apr 30, 2025 at 4:36 PM Arnaldo Carvalho de Melo <a...@kernel.org> wrote: > > On Wed, Apr 30, 2025 at 08:21:59AM -0700, Ian Rogers wrote: > > On Thu, Apr 3, 2025 at 1:24 PM Ian Rogers <irog...@google.com> 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. > > Looks useful, I'll try to review and test tomorrow, but most probably > Friday, as tomorrow is labour day in this part of the world.
Ping. Thanks, Ian > - Arnaldo > > > I'm reminded by Brendan Gregg's new blog: > > https://www.brendangregg.com/blog/2025-05-01/doom-gpu-flame-graphs.html > > that this is still outstanding. The patches also reduce some directory > > scanning for the hwmon "PMU", they are in Google's tree: > > https://github.com/googleprodkernel/linux-perf/blob/google_tools_master/tools/perf/util/drm_pmu.c > > > > Thanks, > > Ian > > > > > 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-irog...@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 > > > > > > 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 > > >
