Re: [PATCH v5 13/27] drm/amdgpu: When filizing the fence driver. stop scheduler first.

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Filizing the fences? You mean finishing the fences, don't you? :)

Am 28.04.21 um 17:11 schrieb Andrey Grodzovsky:
No point calling amdgpu_fence_wait_empty before stopping the
SW scheduler otherwise there is always a chance another job sneaked
in after the wait.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@xxxxxxx>
---
  drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 9 +++++++--
  1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
index 34d51e962799..fd9282637549 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
@@ -533,6 +533,12 @@ void amdgpu_fence_driver_fini_hw(struct amdgpu_device *adev)
if (!ring || !ring->fence_drv.initialized)
  			continue;
+
+		/* Stop any new job submissions from sched before flushing the ring */
+		/* TODO Handle amdgpu_job_submit_direct and amdgpu_amdkfd_submit_ib */
+		if (!ring->no_scheduler)
+			drm_sched_fini(&ring->sched);
+
  		r = amdgpu_fence_wait_empty(ring);
  		if (r) {
  			/* no need to trigger GPU reset as we are unloading */
@@ -541,8 +547,7 @@ void amdgpu_fence_driver_fini_hw(struct amdgpu_device *adev)
  		if (ring->fence_drv.irq_src)
  			amdgpu_irq_put(adev, ring->fence_drv.irq_src,
  				       ring->fence_drv.irq_type);
-		if (!ring->no_scheduler)
-			drm_sched_fini(&ring->sched);
+
  		del_timer_sync(&ring->fence_drv.fallback_timer);
  	}
  }




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