diff options
| author | Christian König <christian.koenig@amd.com> | 2018-07-26 13:43:49 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-07-31 16:58:20 -0500 |
| commit | 43bce41cf48eb51eab5ad9e0d40ed382a7bb61d7 (patch) | |
| tree | 2a394bbe837c5ff95ec29a4c483f179ccfcc56e4 /drivers | |
| parent | 4a102ad4ba0daf886dcf0927ce2a7f6c3b3a615c (diff) | |
drm/scheduler: only kill entity if last user is killed v2
Note which task is using the entity and only kill it if the last user of
the entity is killed. This should prevent problems when entities are leaked to
child processes.
v2: add missing kernel doc
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Acked-by: Nayan Deshmukh <nayan26deshmukh@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/scheduler/gpu_scheduler.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/gpu/drm/scheduler/gpu_scheduler.c b/drivers/gpu/drm/scheduler/gpu_scheduler.c index 3f2fc5e8242a..f563e4fbb4b6 100644 --- a/drivers/gpu/drm/scheduler/gpu_scheduler.c +++ b/drivers/gpu/drm/scheduler/gpu_scheduler.c @@ -275,6 +275,7 @@ static void drm_sched_entity_kill_jobs_cb(struct dma_fence *f, long drm_sched_entity_flush(struct drm_sched_entity *entity, long timeout) { struct drm_gpu_scheduler *sched; + struct task_struct *last_user; long ret = timeout; sched = entity->rq->sched; @@ -295,7 +296,9 @@ long drm_sched_entity_flush(struct drm_sched_entity *entity, long timeout) /* For killed process disable any more IBs enqueue right now */ - if ((current->flags & PF_EXITING) && (current->exit_code == SIGKILL)) + 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)) drm_sched_entity_set_rq(entity, NULL); return ret; @@ -541,6 +544,7 @@ void drm_sched_entity_push_job(struct drm_sched_job *sched_job, trace_drm_sched_job(sched_job, entity); + WRITE_ONCE(entity->last_user, current->group_leader); first = spsc_queue_push(&entity->job_queue, &sched_job->queue_node); /* first job wakes up scheduler */ |