drm/amdgpu: Deactivate SW interrupt fallback in amdgpu_fence_process v2 (3547e3cf) · Commits · 戴 / test

Deactivate SW interrupt fallback when all emited fences are completed. Also switch interrupt SW fallback message from INFO to WARN. v2: shorten the warning message a bit and only re-activate the timer during processing if it was already activated before. (Christian) Signed-off-by:

Andrey Grodzovsky <andrey.grodzovsky@amd.com> Suggested-by:

Christian Konig <Christian.Koenig@amd.com> Reviewed-and-Tested-by:

Andrey Grodzovsky <andrey.grodzovsky@amd.com> Signed-off-by:

Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -229,7 +229,8 @@ void amdgpu_fence_process(struct amdgpu_ring *ring)

		} while (atomic_cmpxchg(&drv->last_seq, last_seq, seq) != last_seq);

		if (seq != ring->fence_drv.sync_seq)
		if (del_timer(&ring->fence_drv.fallback_timer) &&
		seq != ring->fence_drv.sync_seq)
		amdgpu_fence_schedule_fallback(ring);

		if (unlikely(seq == last_seq))
		@@ -274,7 +275,7 @@ static void amdgpu_fence_fallback(struct timer_list *t)
		struct amdgpu_ring *ring = from_timer(ring, t,
		fence_drv.fallback_timer);

		DRM_INFO("Fallback to SW interrupt on ring %s due to HW interrupt time out", ring->name);
		DRM_WARN("Fence fallback timer expired on ring %s\n", ring->name);
		amdgpu_fence_process(ring);
		}

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