[PATCH 0/1] Add support for querying engine cycles

[Umesh Nerlige Ramappa]

This is just a refresh of the earlier patch along with cover letter for the IGT
testing. The query provides the engine cs cycles counter.

v2: Use GRAPHICS_VER() instead of IG_GEN()
v3: Add R-b to the patch
v4: Split cpu timestamp array into timestamp and delta for cleaner API

Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa at intel.com>
Test-with: 20210429002959.69473-1-umesh.nerlige.ramappa at intel.com

Umesh Nerlige Ramappa (1):
  i915/query: Correlate engine and cpu timestamps with better accuracy

 drivers/gpu/drm/i915/i915_query.c | 148 ++++++++++++++++++++++++++++++
 include/uapi/drm/i915_drm.h       |  52 +++++++++++
 2 files changed, 200 insertions(+)

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2.20.1