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drm/sched: Avoid data corruptions

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[ Upstream commit 0b10ab80695d61422337ede6ff496552d8ace99d ]

Wait for all dependencies of a job  to complete before
killing it to avoid data corruptions.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210519141407.88444-1-andrey.grodzovsky@amd.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Andrey Grodzovsky
2021-05-19 10:14:07 -04:00
committed by Greg Kroah-Hartman
parent 5ed8c298b2
commit 0687411e2a
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/scheduler/sched_entity.c
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@@ -219,11 +219,16 @@ static void drm_sched_entity_kill_jobs_cb(struct dma_fence *f,
static void drm_sched_entity_kill_jobs(struct drm_sched_entity *entity) static void drm_sched_entity_kill_jobs(struct drm_sched_entity *entity)
{ {
struct drm_sched_job *job; struct drm_sched_job *job;
struct dma_fence *f;
int r; int r;
while ((job = to_drm_sched_job(spsc_queue_pop(&entity->job_queue)))) { while ((job = to_drm_sched_job(spsc_queue_pop(&entity->job_queue)))) {
struct drm_sched_fence *s_fence = job->s_fence; struct drm_sched_fence *s_fence = job->s_fence;
/* Wait for all dependencies to avoid data corruptions */
while ((f = job->sched->ops->dependency(job, entity)))
dma_fence_wait(f, false);
drm_sched_fence_scheduled(s_fence); drm_sched_fence_scheduled(s_fence);
dma_fence_set_error(&s_fence->finished, -ESRCH); dma_fence_set_error(&s_fence->finished, -ESRCH);