[PATCH i-g-t v1 0/3] tests/intel/xe_pmu: Guard engine accuracy tests against busy DRM clients

[Soham Purkait <soham.purkait@intel.com>]

The engine-activity accuracy subtests are sensitive to unrelated
DRM clients on the same card. When other processes keep the device busy,
the measured engine activity can be higher than expected and trigger
false failures.

This series improves the robustness of the subtest by first introducing
a helper to enumerate DRM client processes associated with a given card
fd, and subsequently using it in engine accuracy tests to detect competing
clients triggering a warning, and skipping the test.

Soham Purkait (3):
  lib/igt_drm_clients: Add helper to list and count the DRM client
    processes
  tests/intel/xe_pmu: Check if other processes are using the DRM device
  HAX: Add engine accuracy tests to xe-fast-feedback.testlist

 lib/igt_drm_clients.c                    | 93 ++++++++++++++++++++++++
 lib/igt_drm_clients.h                    | 10 +++
 tests/intel-ci/xe.fast-feedback.testlist |  3 +
 tests/intel/xe_pmu.c                     | 25 +++++++
 tests/meson.build                        |  1 +
 5 files changed, 132 insertions(+)

-- 
2.43.0