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.
v4: Rebase over changes like the auto merge stat to first wildcard PMU
change and the clean up of tool PMU initialization.
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 (3):
perf parse-events: Avoid scanning PMUs that can't contain events
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 | 686 ++++++++++++++++++++++++++++++
tools/perf/util/drm_pmu.h | 39 ++
tools/perf/util/evsel.c | 9 +
tools/perf/util/parse-events.c | 33 +-
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, 951 insertions(+), 17 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
--
2.50.0.727.gbf7dc18ff4-goog
