This is a note to let you know that I've just added the patch titled
drm/amdgpu: save list length when fence is signaled
to the 4.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amdgpu-save-list-length-when-fence-is-signaled.patch
and it can be found in the queue-4.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 7a7c286d07f9c704e8fd11dd960bf421cc67b66b Mon Sep 17 00:00:00 2001
From: Chunming Zhou <David1.Zhou@xxxxxxx>
Date: Fri, 11 Aug 2017 09:34:33 +0800
Subject: drm/amdgpu: save list length when fence is signaled
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From: Chunming Zhou <David1.Zhou@xxxxxxx>
commit 7a7c286d07f9c704e8fd11dd960bf421cc67b66b upstream.
update the list first to avoid redundant checks.
Signed-off-by: Chunming Zhou <David1.Zhou@xxxxxxx>
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
@@ -244,6 +244,12 @@ struct dma_fence *amdgpu_sync_peek_fence
struct dma_fence *f = e->fence;
struct amd_sched_fence *s_fence = to_amd_sched_fence(f);
+ if (dma_fence_is_signaled(f)) {
+ hash_del(&e->node);
+ dma_fence_put(f);
+ kmem_cache_free(amdgpu_sync_slab, e);
+ continue;
+ }
if (ring && s_fence) {
/* For fences from the same ring it is sufficient
* when they are scheduled.
@@ -256,13 +262,6 @@ struct dma_fence *amdgpu_sync_peek_fence
}
}
- if (dma_fence_is_signaled(f)) {
- hash_del(&e->node);
- dma_fence_put(f);
- kmem_cache_free(amdgpu_sync_slab, e);
- continue;
- }
-
return f;
}
Patches currently in stable-queue which might be from David1.Zhou@xxxxxxx are
queue-4.12/drm-amdgpu-save-list-length-when-fence-is-signaled.patch