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drm/scheduler: signal scheduled fence when kill job

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[ Upstream commit 471db2c2d4f80ee94225a1ef246e4f5011733e50 ]

When an entity from application B is killed, drm_sched_entity_kill()
removes all jobs belonging to that entity through
drm_sched_entity_kill_jobs_work(). If application A's job depends on a
scheduled fence from application B's job, and that fence is not properly
signaled during the killing process, application A's dependency cannot be
cleared.

This leads to application A hanging indefinitely while waiting for a
dependency that will never be resolved. Fix this issue by ensuring that
scheduled fences are properly signaled when an entity is killed, allowing
dependent applications to continue execution.

Signed-off-by: Lin.Cao <lincao12@amd.com>
Reviewed-by: Philipp Stanner <phasta@kernel.org>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://lore.kernel.org/r/20250515020713.1110476-1-lincao12@amd.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Lin.Cao
2025-05-15 10:07:13 +08:00
committed by Greg Kroah-Hartman
parent 553f560e0a
commit c5734f9bab
1 changed files with 1 additions and 0 deletions
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1
drivers/gpu/drm/scheduler/sched_entity.c
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@@ -167,6 +167,7 @@ static void drm_sched_entity_kill_jobs_work(struct work_struct *wrk)
{
struct drm_sched_job *job = container_of(wrk, typeof(*job), work);
drm_sched_fence_scheduled(job->s_fence, NULL);
drm_sched_fence_finished(job->s_fence, -ESRCH);
WARN_ON(job->s_fence->parent);
job->sched->ops->free_job(job);