[Intel-gfx] [PATCH 03/22] drm/i915/gt: Set timeslicing priority from queue

Chris Wilson chris at chris-wilson.co.uk
Thu Jun 4 10:37:32 UTC 2020


If we only submit the first port, leaving the second empty yet have
ready requests pending in the queue, use that to set the timeslicing
priority (i.e. the priority at which we will decided to enabling
timeslicing and evict the currently active context if the queue is of
equal priority after its quantum expired).

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/gt/intel_lrc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index aac8da18694f..c27f4279ae53 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -1962,7 +1962,7 @@ static int
 switch_prio(struct intel_engine_cs *engine, const struct i915_request *rq)
 {
 	if (list_is_last(&rq->sched.link, &engine->active.requests))
-		return INT_MIN;
+		return engine->execlists.queue_priority_hint;
 
 	return rq_prio(list_next_entry(rq, sched.link));
 }
-- 
2.20.1



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