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drm/scheduler: rework job destruction

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We now destroy finished jobs from the worker thread to make sure that
we never destroy a job currently in timeout processing.
By this we avoid holding lock around ring mirror list in drm_sched_stop
which should solve a deadlock reported by a user.

v2: Remove unused variable.
v4: Move guilty job free into sched code.
v5:
Move sched->hw_rq_count to drm_sched_start to account for counter
decrement in drm_sched_stop even when we don't call resubmit jobs
if guily job did signal.
v6: remove unused variable

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=109692

Acked-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1555599624-12285-3-git-send-email-andrey.grodzovsky@amd.com
This commit is contained in:
Christian König
2019-04-18 11:00:21 -04:00
committed by Alex Deucher
parent b3198c38f0
commit 5918045c4e
8 changed files with 102 additions and 85 deletions
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2
drivers/gpu/drm/v3d/v3d_sched.c
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@@ -268,7 +268,7 @@ v3d_gpu_reset_for_timeout(struct v3d_dev *v3d, struct drm_sched_job *sched_job)
/* block scheduler */
for (q = 0; q < V3D_MAX_QUEUES; q++)
drm_sched_stop(&v3d->queue[q].sched);
drm_sched_stop(&v3d->queue[q].sched, sched_job);
if (sched_job)
drm_sched_increase_karma(sched_job);