[PATCH 3/8] drm/sched: Always increment correct scheduler score

Tvrtko Ursulin tursulin at igalia.com
Tue Sep 24 10:19:09 UTC 2024


From: Tvrtko Ursulin <tvrtko.ursulin at igalia.com>

Entities run queue can change during drm_sched_entity_push_job() so make
sure to update the score consistently.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at igalia.com>
Fixes: d41a39dda140 ("drm/scheduler: improve job distribution with multiple queues")
Cc: Nirmoy Das <nirmoy.das at amd.com>
Cc: Christian König <christian.koenig at amd.com>
Cc: Luben Tuikov <ltuikov89 at gmail.com>
Cc: Matthew Brost <matthew.brost at intel.com>
Cc: David Airlie <airlied at gmail.com>
Cc: Daniel Vetter <daniel at ffwll.ch>
Cc: dri-devel at lists.freedesktop.org
Cc: <stable at vger.kernel.org> # v5.9+
Reviewed-by: Christian König <christian.koenig at amd.com>
Reviewed-by: Nirmoy Das <nirmoy.das at intel.com>
---
 drivers/gpu/drm/scheduler/sched_entity.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/scheduler/sched_entity.c b/drivers/gpu/drm/scheduler/sched_entity.c
index a75eede8bf8d..b2cf3e0c1838 100644
--- a/drivers/gpu/drm/scheduler/sched_entity.c
+++ b/drivers/gpu/drm/scheduler/sched_entity.c
@@ -586,7 +586,6 @@ void drm_sched_entity_push_job(struct drm_sched_job *sched_job)
 	ktime_t submit_ts;
 
 	trace_drm_sched_job(sched_job, entity);
-	atomic_inc(entity->rq->sched->score);
 	WRITE_ONCE(entity->last_user, current->group_leader);
 
 	/*
@@ -614,6 +613,7 @@ void drm_sched_entity_push_job(struct drm_sched_job *sched_job)
 		rq = entity->rq;
 		sched = rq->sched;
 
+		atomic_inc(sched->score);
 		drm_sched_rq_add_entity(rq, entity);
 		spin_unlock(&entity->rq_lock);
 
-- 
2.46.0



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