[RFC PATCH 06/20] drm/sched: Start run wq before TDR in drm_sched_start

Matthew Brost matthew.brost at intel.com
Thu Dec 22 22:21:13 UTC 2022


If the TDR is set to a very small value it can fire before the run wq is
started in the function drm_sched_start. The run wq is expected to
running when the TDR fires, fix this ordering so this expectation is
always met.

Signed-off-by: Matthew Brost <matthew.brost at intel.com>
---
 drivers/gpu/drm/scheduler/sched_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c
index 8e688c2fc482..f39fdc01c37b 100644
--- a/drivers/gpu/drm/scheduler/sched_main.c
+++ b/drivers/gpu/drm/scheduler/sched_main.c
@@ -586,13 +586,13 @@ void drm_sched_start(struct drm_gpu_scheduler *sched, bool full_recovery)
 			drm_sched_job_done(s_job);
 	}
 
+	drm_sched_run_wq_start(sched);
+
 	if (full_recovery) {
 		spin_lock(&sched->job_list_lock);
 		drm_sched_start_timeout(sched);
 		spin_unlock(&sched->job_list_lock);
 	}
-
-	drm_sched_run_wq_start(sched);
 }
 EXPORT_SYMBOL(drm_sched_start);
 
-- 
2.37.3



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