[PATCH v4 5/6] drm/sched: Use parent fence instead of finished

Arvind Yadav
2022-09-14T16:45:51Z

Using the parent fence instead of the finished fence
to get the job status. This change is to avoid GPU
scheduler timeout error which can cause GPU reset.

Signed-off-by: Arvind Yadav <Arvind.Yadav@amd.com>
Reviewed-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
---

changes in v1,v2 - Enable signaling for finished fence in sche_main()
is removed

---
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 e0ab14e0fb6b..2ac28ad11432 100644
--- a/drivers/gpu/drm/scheduler/sched_main.c
+++ b/drivers/gpu/drm/scheduler/sched_main.c
@@ -829,7 +829,7 @@ drm_sched_get_cleanup_job(struct drm_gpu_scheduler *sched)
job = list_first_entry_or_null(&sched->pending_list,
struct drm_sched_job, list);

- if (job && dma_fence_is_signaled(&job->s_fence->finished)) {
+ if (job && dma_fence_is_signaled(job->s_fence->parent)) {
/* remove job from pending_list */
list_del_init(&job->list);

@@ -841,7 +841,7 @@ drm_sched_get_cleanup_job(struct drm_gpu_scheduler *sched)

if (next) {
next->s_fence->scheduled.timestamp =
- job->s_fence->finished.timestamp;
+ job->s_fence->parent->timestamp;
/* start TO timer for next job */
drm_sched_start_timeout(sched);
}
--
2.25.1