This is essentially part of drm_sched_dependency_optimized(), which
only amdgpu seems to make use of. Use it a bit more.
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
Cc: "Christian König" <christian.koenig@xxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: Luben Tuikov <luben.tuikov@xxxxxxx>
Cc: Andrey Grodzovsky <andrey.grodzovsky@xxxxxxx>
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: Jack Zhang <Jack.Zhang1@xxxxxxx>
---
drivers/gpu/drm/scheduler/sched_main.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c
index 370c336d383f..c31d7cf7df74 100644
--- a/drivers/gpu/drm/scheduler/sched_main.c
+++ b/drivers/gpu/drm/scheduler/sched_main.c
@@ -649,6 +649,13 @@ int drm_sched_job_await_fence(struct drm_sched_job *job,
if (!fence)
return 0;
+ /* if it's a fence from us it's guaranteed to be earlier */
+ if (fence->context == job->entity->fence_context ||
+ fence->context == job->entity->fence_context + 1) {
+ dma_fence_put(fence);
+ return 0;
+ }
+
/* Deduplicate if we already depend on a fence from the same context.
* This lets the size of the array of deps scale with the number of
* engines involved, rather than the number of BOs.
--
2.32.0.rc2
