AuxXxilium/linux_dsm_epyc7002
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1a2695a746
linux_dsm_epyc7002/drivers/gpu/drm/i915/gt
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Chris Wilson 1a2695a746 drm/i915/gt: Expose timeslice duration to sysfs 
Execlists uses a scheduling quantum (a timeslice) to alternate execution
between ready-to-run contexts of equal priority. This ensures that all
users (though only if they of equal importance) have the opportunity to
run and prevents livelocks where contexts may have implicit ordering due
to userspace semaphores.

The timeslicing mechanism can be compiled out with

	./scripts/config --set-val DRM_I915_TIMESLICE_DURATION 0

The timeslice duration can be adjusted per-engine using,

	/sys/class/drm/card?/engine/*/timeslice_duration_ms

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Steve Carbonari <steven.carbonari@intel.com>
Tested-by: Steve Carbonari <steven.carbonari@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200228131716.3243616-3-chris@chris-wilson.co.uk
2020-02-28 22:03:39 +00:00
..
selftests drm/i915: Serialise i915_active_fence_set() with itself 2019-11-27 17:02:14 +00:00
uc drm/i915/uc: consolidate firmware cleanup 2020-02-20 17:48:08 +00:00
debugfs_engines.c drm/i915/gt: Move pm debug files into a gt aware debugfs 2019-12-22 15:25:10 +00:00
debugfs_engines.h drm/i915/gt: Move pm debug files into a gt aware debugfs 2019-12-22 15:25:10 +00:00
debugfs_gt_pm.c drm/i915/gt: Move pm debug files into a gt aware debugfs 2019-12-22 15:25:10 +00:00
debugfs_gt_pm.h drm/i915/gt: Move pm debug files into a gt aware debugfs 2019-12-22 15:25:10 +00:00
debugfs_gt.c drm/i915/gt: Move pm debug files into a gt aware debugfs 2019-12-22 15:25:10 +00:00
debugfs_gt.h drm/i915/gt: Move pm debug files into a gt aware debugfs 2019-12-22 15:25:10 +00:00
gen6_ppgtt.c drm pull for 5.6-rc1 2020-01-30 08:04:01 -08:00
gen6_ppgtt.h drm/i915/gtt: split up i915_gem_gtt 2020-01-07 19:27:36 +00:00
gen6_renderstate.c
gen7_renderstate.c
gen8_ppgtt.c drm/i915/ggtt: do not set bits 1-11 in gen12 ptes 2020-02-27 22:38:11 +00:00
gen8_ppgtt.h drm/i915/gtt: split up i915_gem_gtt 2020-01-07 19:27:36 +00:00
gen8_renderstate.c
gen9_renderstate.c
intel_breadcrumbs.c drm/i915/gt: Prevent queuing retire workers on the virtual engine 2020-02-07 10:54:49 +00:00
intel_context_param.c drm/i915: Allow userspace to specify ringsize on construction 2020-02-25 19:23:19 +00:00
intel_context_param.h drm/i915: Allow userspace to specify ringsize on construction 2020-02-25 19:23:19 +00:00
intel_context_sseu.c drm/i915/gt: Pull sseu context updates under gt 2020-02-04 10:14:03 +00:00
intel_context_types.h drm/i915: Track hw reported context runtime 2020-02-16 15:16:22 +00:00
intel_context.c drm/i915: Track hw reported context runtime 2020-02-16 15:16:22 +00:00
intel_context.h drm/i915: Track hw reported context runtime 2020-02-16 15:16:22 +00:00
intel_engine_cs.c drm/i915/gt: remove redundant assignment to variable dw 2020-02-22 14:57:47 +00:00
intel_engine_heartbeat.c drm/i915/gt: Fix up missing error propagation for heartbeat pulses 2020-02-18 20:32:21 +00:00
intel_engine_heartbeat.h
intel_engine_pm.c drm/i915/gt: Include a tell-tale for engine parking 2020-01-22 17:10:15 +00:00
intel_engine_pm.h drm/i915: Mark up the calling context for intel_wakeref_put() 2019-11-25 15:29:17 +02:00
intel_engine_pool_types.h
intel_engine_pool.c drm main pull for 5.5-rc1 2019-11-27 17:45:48 -08:00
intel_engine_pool.h
intel_engine_types.h drm/i915 fixes for v5.6-rc2 2020-02-14 13:04:46 +10:00
intel_engine_user.c drm/i915/gt: Make WARN* drm specific where drm_priv ptr is available 2020-01-22 17:53:37 +02:00
intel_engine_user.h
intel_engine.h drm/i915/selftests: Drop live_preempt_hang 2020-02-10 16:46:21 +00:00
intel_ggtt.c drm/i915/ggtt: do not set bits 1-11 in gen12 ptes 2020-02-27 22:38:11 +00:00
intel_gpu_commands.h drm/i915/gem: Prepare gen7 cmdparser for async execution 2019-12-12 10:42:57 +00:00
intel_gt_irq.c drm/i915/gt: Hook up CS_MASTER_ERROR_INTERRUPT 2020-01-29 15:16:52 +00:00
intel_gt_irq.h drm/i915/gt: Reorganise gen8+ interrupt handler 2020-01-28 12:30:00 +00:00
intel_gt_pm_irq.c
intel_gt_pm_irq.h
intel_gt_pm.c drm/i915: extract engine WA programming to common resume function 2020-01-31 23:54:12 +00:00
intel_gt_pm.h drm/i915/gt: Apply sanitiization just before resume 2019-12-26 12:37:30 +00:00
intel_gt_requests.c drm/i915/gt: Prevent queuing retire workers on the virtual engine 2020-02-07 10:54:49 +00:00
intel_gt_requests.h drm/i915/gt: Schedule request retirement when timeline idles 2019-11-25 16:39:07 +02:00
intel_gt_types.h drm/i915: Remove i915->kernel_context 2019-12-21 16:37:10 +00:00
intel_gt.c drm/i915/gt: Push the GPU cancellation to the backend 2020-02-22 10:20:12 +00:00
intel_gt.h drm/i915/gt: Drop rogue space in the middle of GT_TRACE 2020-01-16 15:41:34 +00:00
intel_gtt.c drm/i915/gt: Pull marking vm as closed underneath the vm->mutex 2020-02-28 12:33:07 +00:00
intel_gtt.h drm/i915/gt: Pull marking vm as closed underneath the vm->mutex 2020-02-28 12:33:07 +00:00
intel_llc_types.h
intel_llc.c drm/i915/gt: Do not attempt to reprogram IA/ring frequencies for dgfx 2020-02-19 22:27:10 +00:00
intel_llc.h
intel_lrc_reg.h drm/i915: Track hw reported context runtime 2020-02-16 15:16:22 +00:00
intel_lrc.c drm/i915/gt: Reset queue_priority_hint after wedging 2020-02-28 15:48:10 +00:00
intel_lrc.h drm/i915/gt: Merge engine init/setup loops 2019-12-22 15:18:05 +00:00
intel_mocs.c drm/i915/gt: Refactor l3cc/mocs availability 2020-02-19 14:09:18 +00:00
intel_mocs.h
intel_ppgtt.c drm/i915/gtt: split up i915_gem_gtt 2020-01-07 19:27:36 +00:00
intel_rc6_types.h drm/i915/gt: Only ignore rc6 parking for PCU on byt/bsw 2019-12-12 08:35:48 +00:00
intel_rc6.c drm/i915/display: Be explicit in handling the preallocated vma 2020-02-05 09:20:39 +00:00
intel_rc6.h drm/i915/gt: Simplify rc6 w/a application 2019-12-02 21:57:22 +00:00
intel_renderstate.c drm/i915: Lift i915_vma_pin() out of intel_renderstate_emit() 2019-12-03 13:23:00 +00:00
intel_renderstate.h drm/i915: Lift i915_vma_pin() out of intel_renderstate_emit() 2019-12-03 13:23:00 +00:00
intel_reset_types.h
intel_reset.c drm/i915/gt: Only ignore already reset requests 2020-02-07 20:52:41 +00:00
intel_reset.h
intel_ring_submission.c drm/i915: significantly reduce the use of <drm/i915_drm.h> 2020-02-27 08:35:09 +02:00
intel_ring_types.h drm/i915/gt: Avoid resetting ring->head outside of its timeline mutex 2020-02-11 12:03:22 +00:00
intel_ring.c drm/i915/execlists: Always force a context reload when rewinding RING_TAIL 2020-02-07 21:41:46 +00:00
intel_ring.h drm/i915/execlists: Always force a context reload when rewinding RING_TAIL 2020-02-07 21:41:46 +00:00
intel_rps_types.h
intel_rps.c drm/i915: significantly reduce the use of <drm/i915_drm.h> 2020-02-27 08:35:09 +02:00
intel_rps.h drm/i915/rps: Add frequency translation helpers 2019-12-13 22:22:05 +00:00
intel_sseu.c
intel_sseu.h
intel_timeline_types.h drm/i915/gt: Pull GT initialisation under intel_gt_init() 2019-12-22 12:51:32 +00:00
intel_timeline.c drm/i915/gt: Warn about the hidden i915_vma_pin in timeline_get_seqno 2020-02-03 11:27:17 +00:00
intel_timeline.h
intel_workarounds_types.h drm/i915/gt: Skip rmw for masked registers 2020-02-01 09:21:57 +00:00
intel_workarounds.c drm/i915/tgl: Add Wa_1608008084 2020-02-27 13:26:51 -08:00
intel_workarounds.h
mock_engine.c drm/i915/selftests: Mark the mock ring->vma as being in the GGTT 2020-02-17 16:58:49 +00:00
mock_engine.h
selftest_context.c drm/i915: Remove i915->kernel_context 2019-12-21 16:37:10 +00:00
selftest_engine_cs.c drm/i915/selftests: fix uninitialized variable sum when summing up values 2019-12-10 14:35:24 +00:00
selftest_engine_heartbeat.c drm/i915/selftests: Disable heartbeat around manual pulse tests 2020-02-28 09:25:41 +00:00
selftest_engine_pm.c drm/i915: Mark up the calling context for intel_wakeref_put() 2019-11-25 15:29:17 +02:00
selftest_engine.c
selftest_engine.h
selftest_gt_pm.c drm/i915/gt: Manual rc6 entry upon parking 2019-11-27 12:53:27 +00:00
selftest_hangcheck.c drm/i915/guc: Kill USES_GUC_SUBMISSION macro 2020-02-20 17:48:03 +00:00
selftest_llc.c drm/i915/gt: Do not attempt to reprogram IA/ring frequencies for dgfx 2020-02-19 22:27:10 +00:00
selftest_llc.h
selftest_lrc.c drm/i915/selftests: Be a little more lenient for reset workers 2020-02-28 15:45:42 +00:00
selftest_mocs.c drm/i915/gt: Refactor l3cc/mocs availability 2020-02-19 14:09:18 +00:00
selftest_rc6.c drm/i915/selftests: Show the RC6 residency on parking failure 2020-01-24 10:09:56 +00:00
selftest_rc6.h drm/i915/gt: Manual rc6 entry upon parking 2019-11-27 12:53:27 +00:00
selftest_reset.c drm/i915/guc: Kill USES_GUC_SUBMISSION macro 2020-02-20 17:48:03 +00:00
selftest_timeline.c drm/i915/selftests: Remove erroneous intel_engine_pm_put 2020-02-09 13:47:26 +00:00
selftest_workarounds.c drm/i915/selftests: Also wait for the scratch buffer to be bound 2020-01-31 15:10:02 +00:00
sysfs_engines.c drm/i915/gt: Expose timeslice duration to sysfs 2020-02-28 22:03:39 +00:00
sysfs_engines.h drm/i915/gt: Expose engine properties via sysfs 2020-02-28 22:03:19 +00:00