When Application A submits jobs (a1, a2, a3) and application B submits job b1 with a dependency on a2's scheduler fence, killing application A before run_job(a1) causes drm_sched_entity_kill_jobs_work() to force signal all jobs sequentially. However, due to missing work_run_job or work_free_job in entity_kill_job_work(), the scheduler enters sleep state, causing application B hang.
Add drm_sched_wakeup() when entity_kill_job_work() to preventing scheduler sleep and subsequent application hangs. Signed-off-by: Lin.Cao <[email protected]> --- drivers/gpu/drm/scheduler/sched_entity.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/scheduler/sched_entity.c b/drivers/gpu/drm/scheduler/sched_entity.c index e671aa241720..a22b0f65558a 100644 --- a/drivers/gpu/drm/scheduler/sched_entity.c +++ b/drivers/gpu/drm/scheduler/sched_entity.c @@ -180,6 +180,7 @@ static void drm_sched_entity_kill_jobs_work(struct work_struct *wrk) drm_sched_fence_finished(job->s_fence, -ESRCH); WARN_ON(job->s_fence->parent); job->sched->ops->free_job(job); + drm_sched_wakeup(job->sched); } /* Signal the scheduler finished fence when the entity in question is killed. */ -- 2.46.1
