[PATCH i-g-t v3 0/3] Add PMU tests to validate engine activity

[Riana Tauro]

PMU provides two counters (engine-active-ticks, engine-total-ticks)
to calculate engine activity. When querying engine activity
user must group these 2 counters using the perf_event
group mechanism to ensure both counters are sampled together.

Add tests to validate engine activity

engine-activity-idle
engine-activity-load-idle
engine-activity-load

KMD Patch: https://patchwork.freedesktop.org/series/144408/

Rev2: add trailing idle test
Rev3: rebase

Riana Tauro (3):
  lib/igt_perf: Use shift parameter for format
  tests/intel/xe_pmu: Add PMU test to validate engine activity stats
  tests/intel/xe_pmu: Add idle engine activity tests

 lib/igt_perf.c       |  13 ++--
 lib/igt_perf.h       |   2 +-
 tests/intel/xe_pmu.c | 157 +++++++++++++++++++++++++++++++++++++------
 3 files changed, 145 insertions(+), 27 deletions(-)

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2.47.1