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drm/amdgpu: Follow up change to previous drm scheduler change.

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Align refcount behaviour for amdgpu_job embedded HW fence with
classic pointer style HW fences by increasing refcount each
time emit is called so amdgpu code doesn't need to make workarounds
using amdgpu_job.job_run_counter to keep the HW fence refcount balanced.

Also since in the previous patch we resumed setting s_fence->parent to NULL
in drm_sched_stop switch to directly checking if job->hw_fence is
signaled to short circuit reset if already signed.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Tested-by: Yiqing Yao <yiqing.yao@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Andrey Grodzovsky
2022-06-20 17:33:55 -04:00
committed by Alex Deucher
parent 45ecaea738
commit 9ae55f030d
4 changed files with 29 additions and 11 deletions
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7
drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
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@@ -164,11 +164,16 @@ int amdgpu_fence_emit(struct amdgpu_ring *ring, struct dma_fence **f, struct amd
if (job && job->job_run_counter) {
/* reinit seq for resubmitted jobs */
fence->seqno = seq;
/* TO be inline with external fence creation and other drivers */
dma_fence_get(fence);
} else {
if (job)
if (job) {
dma_fence_init(fence, &amdgpu_job_fence_ops,
&ring->fence_drv.lock,
adev->fence_context + ring->idx, seq);
/* Against remove in amdgpu_job_{free, free_cb} */
dma_fence_get(fence);
}
else
dma_fence_init(fence, &amdgpu_fence_ops,
&ring->fence_drv.lock,