diff options
| author | Andrey Grodzovsky <andrey.grodzovsky@amd.com> | 2018-08-17 10:32:50 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-08-27 11:11:10 -0500 |
| commit | 62347a33001c27b22465361aa4adcaa432497bdf (patch) | |
| tree | 29ec0030e6b7cb636eb76b116b20f3afad1425eb | |
| parent | 9c70d10ae72a188adb9da83ec760e1d5779bc2ed (diff) | |
drm/scheduler: Add stopped flag to drm_sched_entity
The flag will prevent another thread from same process to
reinsert the entity queue into scheduler's rq after it was already
removewd from there by another thread during drm_sched_entity_flush.
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/scheduler/sched_entity.c | 12 | ||||
| -rw-r--r-- | include/drm/gpu_scheduler.h | 2 |
2 files changed, 13 insertions, 1 deletions
diff --git a/drivers/gpu/drm/scheduler/sched_entity.c b/drivers/gpu/drm/scheduler/sched_entity.c index 1416edb2642a..812e3530ea25 100644 --- a/drivers/gpu/drm/scheduler/sched_entity.c +++ b/drivers/gpu/drm/scheduler/sched_entity.c @@ -177,8 +177,12 @@ long drm_sched_entity_flush(struct drm_sched_entity *entity, long timeout) /* For killed process disable any more IBs enqueue right now */ last_user = cmpxchg(&entity->last_user, current->group_leader, NULL); if ((!last_user || last_user == current->group_leader) && - (current->flags & PF_EXITING) && (current->exit_code == SIGKILL)) + (current->flags & PF_EXITING) && (current->exit_code == SIGKILL)) { + spin_lock(&entity->rq_lock); + entity->stopped = true; drm_sched_rq_remove_entity(entity->rq, entity); + spin_unlock(&entity->rq_lock); + } return ret; } @@ -504,6 +508,12 @@ void drm_sched_entity_push_job(struct drm_sched_job *sched_job, if (first) { /* Add the entity to the run queue */ spin_lock(&entity->rq_lock); + if (entity->stopped) { + spin_unlock(&entity->rq_lock); + + DRM_ERROR("Trying to push to a killed entity\n"); + return; + } drm_sched_rq_add_entity(entity->rq, entity); spin_unlock(&entity->rq_lock); drm_sched_wakeup(entity->rq->sched); diff --git a/include/drm/gpu_scheduler.h b/include/drm/gpu_scheduler.h index 919ae572f775..daec50f887b3 100644 --- a/include/drm/gpu_scheduler.h +++ b/include/drm/gpu_scheduler.h @@ -70,6 +70,7 @@ enum drm_sched_priority { * @fini_status: contains the exit status in case the process was signalled. * @last_scheduled: points to the finished fence of the last scheduled job. * @last_user: last group leader pushing a job into the entity. + * @stopped: Marks the enity as removed from rq and destined for termination. * * Entities will emit jobs in order to their corresponding hardware * ring, and the scheduler will alternate between entities based on @@ -92,6 +93,7 @@ struct drm_sched_entity { atomic_t *guilty; struct dma_fence *last_scheduled; struct task_struct *last_user; + bool stopped; }; /** |