Attachment 118824 Details for Bug 91278 – test kernel patch

[patch] test kernel patch

serialize_writes.patch (text/plain), 1.19 KB, created by Grazvydas Ignotas on 2015-10-11 16:14:11 UTC

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Creator: Grazvydas Ignotas

Created: 2015-10-11 16:14:11 UTC

Size: 1.19 KB

patch

obsolete

>diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
>index 668939a..7a7a25b 100644
>--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
>+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
>@@ -2194,12 +2194,14 @@ static inline struct amdgpu_fence *to_amdgpu_fence(struct fence *f)
>  */
> static inline void amdgpu_ring_write(struct amdgpu_ring *ring, uint32_t v)
> {
>+	wmb();
> 	if (ring->count_dw <= 0)
> 		DRM_ERROR("amdgpu: writing more dwords to the ring than expected!\n");
> 	ring->ring[ring->wptr++] = v;
> 	ring->wptr &= ring->ptr_mask;
> 	ring->count_dw--;
> 	ring->ring_free_dw--;
>+	wmb();
> }
> 
> static inline struct amdgpu_sdma * amdgpu_get_sdma_instance(struct amdgpu_ring *ring)
>diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
>index f03b7eb..f15b92a 100644
>--- a/drivers/gpu/drm/radeon/radeon.h
>+++ b/drivers/gpu/drm/radeon/radeon.h
>@@ -2698,10 +2698,12 @@ static inline void radeon_ring_write(struct radeon_ring *ring, uint32_t v)
> 	if (ring->count_dw <= 0)
> 		DRM_ERROR("radeon: writing more dwords to the ring than expected!\n");
> 
>+	wmb();
> 	ring->ring[ring->wptr++] = v;
> 	ring->wptr &= ring->ptr_mask;
> 	ring->count_dw--;
> 	ring->ring_free_dw--;
>+	wmb();
> }
> 
> /*

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Attachments on bug 91278: 117012 | 117013 | 117739 | 117964 | 118448 | 118665 | 118824 | 119679

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