[PATCH 2/7] SWDEV-275015 - drm: Change scheduled fence track

[Roy Sun]

From: David M Nieto <david.nieto at amd.com>

Update the timestamp of the scheduled fence on
HW completion of the previous fence.

This allows more accurate tracking of the fence
execution in HW

Signed-off-by: David M Nieto <david.nieto at amd.com>
Signed-off-by: Roy Sun <Roy.Sun at amd.com>
---
 drivers/gpu/drm/scheduler/sched_main.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c
index 92d8de24d0a1..952c553c077e 100644
--- a/drivers/gpu/drm/scheduler/sched_main.c
+++ b/drivers/gpu/drm/scheduler/sched_main.c
@@ -671,7 +671,7 @@ drm_sched_select_entity(struct drm_gpu_scheduler *sched)
 static struct drm_sched_job *
 drm_sched_get_cleanup_job(struct drm_gpu_scheduler *sched)
 {
-	struct drm_sched_job *job;
+	struct drm_sched_job *job, *next;
 
 	/*
 	 * Don't destroy jobs while the timeout worker is running  OR thread
@@ -690,6 +690,13 @@ drm_sched_get_cleanup_job(struct drm_gpu_scheduler *sched)
 	if (job && dma_fence_is_signaled(&job->s_fence->finished)) {
 		/* remove job from pending_list */
 		list_del_init(&job->list);
+		/* account for the next fence in the queue */
+		next = list_first_entry_or_null(&sched->pending_list,
+				struct drm_sched_job, list);
+		if (next) {
+			next->s_fence->scheduled.timestamp =
+				job->s_fence->finished.timestamp;
+		}
 	} else {
 		job = NULL;
 		/* queue timeout for next job */
-- 
2.29.0