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drm/i915: Tweak scheduler's kick_submission() 

Skip useless priority bumping on adding a new dependency by making sure
that we do update the priority if we would have rescheduled the active
cotnext.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200310115947.6482-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2020-03-10 11:59:47 +00:00
parent 209df10bb4
commit 6cebcf746f
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/i915/i915_scheduler.c
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@ -209,6 +209,8 @@ static void kick_submission(struct intel_engine_cs *engine,
if (!inflight)
goto unlock;
engine->execlists.queue_priority_hint = prio;
/*
* If we are already the currently executing context, don't
* bother evaluating if we should preempt ourselves.
@ -216,7 +218,6 @@ static void kick_submission(struct intel_engine_cs *engine,
if (inflight->context == rq->context)
goto unlock;
engine->execlists.queue_priority_hint = prio;
if (need_preempt(prio, rq_prio(inflight)))
tasklet_hi_schedule(&engine->execlists.tasklet);