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drm/sched: fix timeout handling v2 

We need to make sure that we don't race between job completion and
timeout.

v2: put revert label after calling the handling manually

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Nayan Deshmukh <nayan26deshmukh@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2018-10-08 13:30:12 +02:00 committed by Alex Deucher
parent b981c86f03
commit 0efd2d2f68
1 changed files with 29 additions and 1 deletions
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30
drivers/gpu/drm/scheduler/sched_main.c
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@ -249,13 +249,41 @@ static void drm_sched_job_timedout(struct work_struct *work)
{
struct drm_gpu_scheduler *sched;
struct drm_sched_job *job;
int r;
sched = container_of(work, struct drm_gpu_scheduler, work_tdr.work);
spin_lock(&sched->job_list_lock);
list_for_each_entry_reverse(job, &sched->ring_mirror_list, node) {
struct drm_sched_fence *fence = job->s_fence;
if (!dma_fence_remove_callback(fence->parent, &fence->cb))
goto already_signaled;
}
job = list_first_entry_or_null(&sched->ring_mirror_list,
struct drm_sched_job, node);
spin_unlock(&sched->job_list_lock);
if (job)
job->sched->ops->timedout_job(job);
sched->ops->timedout_job(job);
spin_lock(&sched->job_list_lock);
list_for_each_entry(job, &sched->ring_mirror_list, node) {
struct drm_sched_fence *fence = job->s_fence;
if (!fence->parent || !list_empty(&fence->cb.node))
continue;
r = dma_fence_add_callback(fence->parent, &fence->cb,
drm_sched_process_job);
if (r)
drm_sched_process_job(fence->parent, &fence->cb);
already_signaled:
;
}
spin_unlock(&sched->job_list_lock);
}
/**