This is a revival of the same series posted by Matthew Brost back in October 2021 (https://patchwork.freedesktop.org/series/96167/). Additional real world measured metrics is included this time around that has proven the effectiveness of this series. This series adds a delay before disabling scheduling the guc-context when a context has become idle. The 2nd patch should explain it quite well. This is the 3rd rev of this series (counting from the first version by Matt). Changes from prior revs: v3: Differentiate and appropriately name helper functions for getting the 'default threshold of num-guc-ids' vs the 'max threshold of num-guc-ids' for bypassing sched-disable and use the correct one for the debugfs validation (John Harrison). v2: Changed the default of the schedule-disable delay to 34 milisecs and added debugfs to control this timing knob. Also added a debugfs to control the bypass for not delaying the schedule-disable if the we are under pressure with a very low balance of remaining guc-ds. (John Harrison). v1: Drop the trace log for intel_context_close (Chris Wilson). Add "Tested-by" into patch-2 (Chris Wilson) Add JIRA number into patch-0 (Chris Wilson). Summaries patch-2s problem and metrics into cover letter (Chris Wilson). Matthew Brost (2): drm/i915/selftests: Use correct selfest calls for live tests drm/i915/guc: Add delay to disable scheduling after pin count goes to zero drivers/gpu/drm/i915/gem/i915_gem_context.c | 2 +- .../i915/gem/selftests/i915_gem_coherency.c | 2 +- .../drm/i915/gem/selftests/i915_gem_dmabuf.c | 2 +- .../drm/i915/gem/selftests/i915_gem_mman.c | 2 +- .../drm/i915/gem/selftests/i915_gem_object.c | 2 +- drivers/gpu/drm/i915/gt/intel_context.h | 9 ++ drivers/gpu/drm/i915/gt/intel_context_types.h | 7 + drivers/gpu/drm/i915/gt/uc/intel_guc.h | 18 +++ .../gpu/drm/i915/gt/uc/intel_guc_debugfs.c | 57 +++++++ .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 150 +++++++++++++++--- drivers/gpu/drm/i915/i915_selftest.h | 2 + drivers/gpu/drm/i915/i915_trace.h | 10 ++ drivers/gpu/drm/i915/selftests/i915_gem_gtt.c | 2 +- drivers/gpu/drm/i915/selftests/i915_perf.c | 2 +- drivers/gpu/drm/i915/selftests/i915_request.c | 2 +- drivers/gpu/drm/i915/selftests/i915_vma.c | 2 +- 16 files changed, 237 insertions(+), 34 deletions(-) base-commit: 1cb5379e17f93685065d8ec54444f1baf9386ffe -- 2.25.1
