From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx> Headline change is removal of the static branch optimisation since I couldn't prove that it makes a significant difference in the real world. I was able to meaure a small CPU usage decrease in our lrc tasklet, in one micro-benchmark, but I did not feel that justified it. There are also tweaks to engine busyness tracking and the delayed stats disable got moved to a different patch due to the above. Patch 1 is a small refactor to make the following work easier. Patch 2 is the main bit. Patch 3 is a small optimisation on top, to only run the sampling timer when it is required. (Depending on GPU awake status and active PMU counters.) Patches 4-6 add software engine busyness tracking, which is then used from the PMU. This allows more efficient and more accurate engine busyness metric. Patches 7-9 add the RC6 and interrupt count metric. Tvrtko Ursulin (9): drm/i915: Extract intel_get_cagf drm/i915/pmu: Expose a PMU interface for perf queries drm/i915/pmu: Suspend sampling when GPU is idle drm/i915: Wrap context schedule notification drm/i915: Engine busy time tracking drm/i915/pmu: Wire up engine busy stats to PMU drm/i915/pmu: Add interrupt count metric drm/i915: Convert intel_rc6_residency_us to ns drm/i915/pmu: Add RC6 residency metrics drivers/gpu/drm/i915/Makefile | 1 + drivers/gpu/drm/i915/i915_debugfs.c | 9 +- drivers/gpu/drm/i915/i915_drv.c | 2 + drivers/gpu/drm/i915/i915_drv.h | 28 +- drivers/gpu/drm/i915/i915_gem.c | 1 + drivers/gpu/drm/i915/i915_gem_request.c | 1 + drivers/gpu/drm/i915/i915_pmu.c | 855 ++++++++++++++++++++++++++++++++ drivers/gpu/drm/i915/i915_pmu.h | 100 ++++ drivers/gpu/drm/i915/i915_reg.h | 3 + drivers/gpu/drm/i915/i915_sysfs.c | 20 +- drivers/gpu/drm/i915/intel_engine_cs.c | 122 +++++ drivers/gpu/drm/i915/intel_lrc.c | 19 +- drivers/gpu/drm/i915/intel_pm.c | 41 +- drivers/gpu/drm/i915/intel_ringbuffer.h | 132 +++++ include/uapi/drm/i915_drm.h | 54 ++ 15 files changed, 1353 insertions(+), 35 deletions(-) create mode 100644 drivers/gpu/drm/i915/i915_pmu.c create mode 100644 drivers/gpu/drm/i915/i915_pmu.h -- 2.9.5 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
