| commit | 7b476affcccfc7e644541a0a719f53fc7bd34c53 | [log] [tgz] |
|---|---|---|
| author | Christian König <christian.koenig@amd.com> | Fri Oct 07 09:51:13 2022 +0200 |
| committer | Christian König <christian.koenig@amd.com> | Wed Oct 19 12:42:51 2022 +0200 |
| tree | ff498887be93406d2304f22a729173c083ddc860 | |
| parent | 4190e8bbcbc77a9c36724681801cedc5229e7fc2 [diff] [blame] |
drm/sched: add DRM_SCHED_FENCE_DONT_PIPELINE flag Setting this flag on a scheduler fence prevents pipelining of jobs depending on this fence. In other words we always insert a full CPU round trip before dependent jobs are pushed to the pipeline. Signed-off-by: Christian König <christian.koenig@amd.com> Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2113#note_1579296 Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Acked-by: Luben Tuikov <luben.tuikov@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221014081553.114899-1-christian.koenig@amd.com
diff --git a/drivers/gpu/drm/scheduler/sched_entity.c b/drivers/gpu/drm/scheduler/sched_entity.c index 6b25b2f..6137537 100644 --- a/drivers/gpu/drm/scheduler/sched_entity.c +++ b/drivers/gpu/drm/scheduler/sched_entity.c
@@ -385,7 +385,8 @@ static bool drm_sched_entity_add_dependency_cb(struct drm_sched_entity *entity) } s_fence = to_drm_sched_fence(fence); - if (s_fence && s_fence->sched == sched) { + if (s_fence && s_fence->sched == sched && + !test_bit(DRM_SCHED_FENCE_DONT_PIPELINE, &fence->flags)) { /* * Fence is from the same scheduler, only need to wait for