dma-buf: Rename struct fence to dma_fence

I plan to usurp the short name of struct fence for a core kernel struct,
and so I need to rename the specialised fence/timeline for DMA
operations to make room.

A consensus was reached in
https://lists.freedesktop.org/archives/dri-devel/2016-July/113083.html
that making clear this fence applies to DMA operations was a good thing.
Since then the patch has grown a bit as usage increases, so hopefully it
remains a good thing!

(v2...: rebase, rerun spatch)
v3: Compile on msm, spotted a manual fixup that I broke.
v4: Try again for msm, sorry Daniel

coccinelle script:
@@

@@
- struct fence
+ struct dma_fence
@@

@@
- struct fence_ops
+ struct dma_fence_ops
@@

@@
- struct fence_cb
+ struct dma_fence_cb
@@

@@
- struct fence_array
+ struct dma_fence_array
@@

@@
- enum fence_flag_bits
+ enum dma_fence_flag_bits
@@

@@
(
- fence_init
+ dma_fence_init
|
- fence_release
+ dma_fence_release
|
- fence_free
+ dma_fence_free
|
- fence_get
+ dma_fence_get
|
- fence_get_rcu
+ dma_fence_get_rcu
|
- fence_put
+ dma_fence_put
|
- fence_signal
+ dma_fence_signal
|
- fence_signal_locked
+ dma_fence_signal_locked
|
- fence_default_wait
+ dma_fence_default_wait
|
- fence_add_callback
+ dma_fence_add_callback
|
- fence_remove_callback
+ dma_fence_remove_callback
|
- fence_enable_sw_signaling
+ dma_fence_enable_sw_signaling
|
- fence_is_signaled_locked
+ dma_fence_is_signaled_locked
|
- fence_is_signaled
+ dma_fence_is_signaled
|
- fence_is_later
+ dma_fence_is_later
|
- fence_later
+ dma_fence_later
|
- fence_wait_timeout
+ dma_fence_wait_timeout
|
- fence_wait_any_timeout
+ dma_fence_wait_any_timeout
|
- fence_wait
+ dma_fence_wait
|
- fence_context_alloc
+ dma_fence_context_alloc
|
- fence_array_create
+ dma_fence_array_create
|
- to_fence_array
+ to_dma_fence_array
|
- fence_is_array
+ dma_fence_is_array
|
- trace_fence_emit
+ trace_dma_fence_emit
|
- FENCE_TRACE
+ DMA_FENCE_TRACE
|
- FENCE_WARN
+ DMA_FENCE_WARN
|
- FENCE_ERR
+ DMA_FENCE_ERR
)
 (
 ...
 )

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161025120045.28839-1-chris@chris-wilson.co.uk

include/drm/drmP.h

@@ -57,7 +57,7 @@
 #include <linux/types.h>
 #include <linux/vmalloc.h>
 #include <linux/workqueue.h>
-#include <linux/fence.h>
+#include <linux/dma-fence.h>
 
 #include <asm/mman.h>
 #include <asm/pgalloc.h>
@@ -362,7 +362,7 @@ struct drm_ioctl_desc {
 struct drm_pending_event {
 	struct completion *completion;
 	struct drm_event *event;
-	struct fence *fence;
+	struct dma_fence *fence;
 	struct list_head link;
 	struct list_head pending_link;
 	struct drm_file *file_priv;

include/drm/drm_crtc.h

@@ -54,7 +54,7 @@ struct drm_mode_set;
 struct drm_file;
 struct drm_clip_rect;
 struct device_node;
-struct fence;
+struct dma_fence;
 struct edid;
 
 static inline int64_t U642I64(uint64_t val)

include/drm/drm_plane.h

@@ -59,7 +59,7 @@ struct drm_plane_state {
 
 	struct drm_crtc *crtc;   /* do not write directly, use drm_atomic_set_crtc_for_plane() */
 	struct drm_framebuffer *fb;  /* do not write directly, use drm_atomic_set_fb_for_plane() */
-	struct fence *fence;
+	struct dma_fence *fence;
 
 	/* Signed dest location allows it to be partially off screen */
 	int32_t crtc_x, crtc_y;

include/drm/ttm/ttm_bo_api.h

@@ -209,7 +209,7 @@ struct ttm_buffer_object {
 	 * Members protected by a bo reservation.
 	 */
 
-	struct fence *moving;
+	struct dma_fence *moving;
 
 	struct drm_vma_offset_node vma_node;
 

include/drm/ttm/ttm_bo_driver.h

@@ -303,7 +303,7 @@ struct ttm_mem_type_manager {
 	/*
 	 * Protected by @move_lock.
 	 */
-	struct fence *move;
+	struct dma_fence *move;
 };
 
 /**
@@ -1025,7 +1025,7 @@ extern void ttm_bo_free_old_node(struct ttm_buffer_object *bo);
  */
 
 extern int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
-				     struct fence *fence, bool evict,
+				     struct dma_fence *fence, bool evict,
 				     struct ttm_mem_reg *new_mem);
 
 /**
@@ -1040,7 +1040,7 @@ extern int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
  * immediately or hang it on a temporary buffer object.
  */
 int ttm_bo_pipeline_move(struct ttm_buffer_object *bo,
-			 struct fence *fence, bool evict,
+			 struct dma_fence *fence, bool evict,
 			 struct ttm_mem_reg *new_mem);
 
 /**

include/drm/ttm/ttm_execbuf_util.h

@@ -114,6 +114,6 @@ extern int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket,
 
 extern void ttm_eu_fence_buffer_objects(struct ww_acquire_ctx *ticket,
 					struct list_head *list,
-					struct fence *fence);
+					struct dma_fence *fence);
 
 #endif