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drm/scheduler: fix fence ref counting

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We leaked dependency fences when processes were beeing killed.

Additional to that grab a reference to the last scheduled fence.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220929180151.139751-1-christian.koenig@amd.com
This commit is contained in:
Christian König 2022-09-27 18:43:03 +02:00
parent dd3abfe4e6
commit 7c022f516f
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/scheduler/sched_entity.c
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@ -208,6 +208,7 @@ static void drm_sched_entity_kill_jobs_cb(struct dma_fence *f,
struct drm_sched_job *job = container_of(cb, struct drm_sched_job,
finish_cb);
dma_fence_put(f);
INIT_WORK(&job->work, drm_sched_entity_kill_jobs_work);
schedule_work(&job->work);
}
@ -235,8 +236,10 @@ static void drm_sched_entity_kill_jobs(struct drm_sched_entity *entity)
struct drm_sched_fence *s_fence = job->s_fence;
/* Wait for all dependencies to avoid data corruptions */
while ((f = drm_sched_job_dependency(job, entity)))
while ((f = drm_sched_job_dependency(job, entity))) {
dma_fence_wait(f, false);
dma_fence_put(f);
}
drm_sched_fence_scheduled(s_fence);
dma_fence_set_error(&s_fence->finished, -ESRCH);
@ -251,6 +254,7 @@ static void drm_sched_entity_kill_jobs(struct drm_sched_entity *entity)
continue;
}
dma_fence_get(entity->last_scheduled);
r = dma_fence_add_callback(entity->last_scheduled,
&job->finish_cb,
drm_sched_entity_kill_jobs_cb);