From: John Harrison <John.C.Harrison@xxxxxxxxx> The latest GuC implements a new and improved scheme for tracking engine busyness. So make use of it. Note that this change comes along with a new set of PMU counters. The old counters have a fundamental problem that they are defined in terms of wall time but the sampling is now all done by the GPU in terms of clock ticks. This leads to issues with timebase conversion, some of which are non-trivial. For existing platforms, the old counters will still be updated by the new scheme and will still suffer all the same issues. For newer platforms (MTL onwards), the old counters are no longer supported. Instead, there is a new set of tick based counters. These include the actual busyness count per engine plus a total ticks count. The intention is that they should be queried as an atomic pair and used together to determine a busyness percentage. No assumptions may be made about tick frequencies or relations to wall time. Test-with: 20230922215233.2438200-1-umesh.nerlige.ramappa@xxxxxxxxx Signed-off-by: John Harrison <John.C.Harrison@xxxxxxxxx> John Harrison (1): drm/i915/guc: Support new and improved engine busyness Umesh Nerlige Ramappa (2): drm/i915/mtl: Add a PMU counter for total active ticks drm/i915/mtl: Add counters for engine busyness ticks drivers/gpu/drm/i915/gt/intel_engine.h | 1 + drivers/gpu/drm/i915/gt/intel_engine_cs.c | 16 + drivers/gpu/drm/i915/gt/intel_engine_types.h | 16 +- drivers/gpu/drm/i915/gt/intel_engine_user.c | 1 + .../gpu/drm/i915/gt/uc/abi/guc_actions_abi.h | 4 +- drivers/gpu/drm/i915/gt/uc/intel_guc.h | 82 ++-- drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c | 55 ++- drivers/gpu/drm/i915/gt/uc/intel_guc_ads.h | 9 +- drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h | 23 +- .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 460 ++++++++++++++---- .../gpu/drm/i915/gt/uc/intel_guc_submission.h | 1 + drivers/gpu/drm/i915/i915_pmu.c | 31 +- drivers/gpu/drm/i915/i915_pmu.h | 2 +- include/uapi/drm/i915_drm.h | 15 +- 14 files changed, 570 insertions(+), 146 deletions(-) -- 2.41.0
