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

1 files changed, 25 insertions, 23 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
index 5c8d3022fb87..ed814e6d0207 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
@@ -34,7 +34,7 @@
 
 struct amdgpu_sync_entry {
 	struct hlist_node	node;
-	struct fence		*fence;
+	struct dma_fence	*fence;
 };
 
 static struct kmem_cache *amdgpu_sync_slab;
@@ -60,7 +60,8 @@ void amdgpu_sync_create(struct amdgpu_sync *sync)
  *
  * Test if the fence was issued by us.
  */
-static bool amdgpu_sync_same_dev(struct amdgpu_device *adev, struct fence *f)
+static bool amdgpu_sync_same_dev(struct amdgpu_device *adev,
+				 struct dma_fence *f)
 {
 	struct amd_sched_fence *s_fence = to_amd_sched_fence(f);
 
@@ -81,7 +82,7 @@ static bool amdgpu_sync_same_dev(struct amdgpu_device *adev, struct fence *f)
  *
  * Extract who originally created the fence.
  */
-static void *amdgpu_sync_get_owner(struct fence *f)
+static void *amdgpu_sync_get_owner(struct dma_fence *f)
 {
 	struct amd_sched_fence *s_fence = to_amd_sched_fence(f);
 
@@ -99,13 +100,14 @@ static void *amdgpu_sync_get_owner(struct fence *f)
  *
  * Either keep the existing fence or the new one, depending which one is later.
  */
-static void amdgpu_sync_keep_later(struct fence **keep, struct fence *fence)
+static void amdgpu_sync_keep_later(struct dma_fence **keep,
+				   struct dma_fence *fence)
 {
-	if (*keep && fence_is_later(*keep, fence))
+	if (*keep && dma_fence_is_later(*keep, fence))
 		return;
 
-	fence_put(*keep);
-	*keep = fence_get(fence);
+	dma_fence_put(*keep);
+	*keep = dma_fence_get(fence);
 }
 
 /**
@@ -117,7 +119,7 @@ static void amdgpu_sync_keep_later(struct fence **keep, struct fence *fence)
  * Tries to add the fence to an existing hash entry. Returns true when an entry
  * was found, false otherwise.
  */
-static bool amdgpu_sync_add_later(struct amdgpu_sync *sync, struct fence *f)
+static bool amdgpu_sync_add_later(struct amdgpu_sync *sync, struct dma_fence *f)
 {
 	struct amdgpu_sync_entry *e;
 
@@ -139,7 +141,7 @@ static bool amdgpu_sync_add_later(struct amdgpu_sync *sync, struct fence *f)
  *
  */
 int amdgpu_sync_fence(struct amdgpu_device *adev, struct amdgpu_sync *sync,
-		      struct fence *f)
+		      struct dma_fence *f)
 {
 	struct amdgpu_sync_entry *e;
 
@@ -158,7 +160,7 @@ int amdgpu_sync_fence(struct amdgpu_device *adev, struct amdgpu_sync *sync,
 		return -ENOMEM;
 
 	hash_add(sync->fences, &e->node, f->context);
-	e->fence = fence_get(f);
+	e->fence = dma_fence_get(f);
 	return 0;
 }
 
@@ -177,7 +179,7 @@ int amdgpu_sync_resv(struct amdgpu_device *adev,
 		     void *owner)
 {
 	struct reservation_object_list *flist;
-	struct fence *f;
+	struct dma_fence *f;
 	void *fence_owner;
 	unsigned i;
 	int r = 0;
@@ -231,15 +233,15 @@ int amdgpu_sync_resv(struct amdgpu_device *adev,
  * Returns the next fence not signaled yet without removing it from the sync
  * object.
  */
-struct fence *amdgpu_sync_peek_fence(struct amdgpu_sync *sync,
-				     struct amdgpu_ring *ring)
+struct dma_fence *amdgpu_sync_peek_fence(struct amdgpu_sync *sync,
+					 struct amdgpu_ring *ring)
 {
 	struct amdgpu_sync_entry *e;
 	struct hlist_node *tmp;
 	int i;
 
 	hash_for_each_safe(sync->fences, i, tmp, e, node) {
-		struct fence *f = e->fence;
+		struct dma_fence *f = e->fence;
 		struct amd_sched_fence *s_fence = to_amd_sched_fence(f);
 
 		if (ring && s_fence) {
@@ -247,16 +249,16 @@ struct fence *amdgpu_sync_peek_fence(struct amdgpu_sync *sync,
 			 * when they are scheduled.
 			 */
 			if (s_fence->sched == &ring->sched) {
-				if (fence_is_signaled(&s_fence->scheduled))
+				if (dma_fence_is_signaled(&s_fence->scheduled))
 					continue;
 
 				return &s_fence->scheduled;
 			}
 		}
 
-		if (fence_is_signaled(f)) {
+		if (dma_fence_is_signaled(f)) {
 			hash_del(&e->node);
-			fence_put(f);
+			dma_fence_put(f);
 			kmem_cache_free(amdgpu_sync_slab, e);
 			continue;
 		}
@@ -274,11 +276,11 @@ struct fence *amdgpu_sync_peek_fence(struct amdgpu_sync *sync,
  *
  * Get and removes the next fence from the sync object not signaled yet.
  */
-struct fence *amdgpu_sync_get_fence(struct amdgpu_sync *sync)
+struct dma_fence *amdgpu_sync_get_fence(struct amdgpu_sync *sync)
 {
 	struct amdgpu_sync_entry *e;
 	struct hlist_node *tmp;
-	struct fence *f;
+	struct dma_fence *f;
 	int i;
 
 	hash_for_each_safe(sync->fences, i, tmp, e, node) {
@@ -288,10 +290,10 @@ struct fence *amdgpu_sync_get_fence(struct amdgpu_sync *sync)
 		hash_del(&e->node);
 		kmem_cache_free(amdgpu_sync_slab, e);
 
-		if (!fence_is_signaled(f))
+		if (!dma_fence_is_signaled(f))
 			return f;
 
-		fence_put(f);
+		dma_fence_put(f);
 	}
 	return NULL;
 }
@@ -311,11 +313,11 @@ void amdgpu_sync_free(struct amdgpu_sync *sync)
 
 	hash_for_each_safe(sync->fences, i, tmp, e, node) {
 		hash_del(&e->node);
-		fence_put(e->fence);
+		dma_fence_put(e->fence);
 		kmem_cache_free(amdgpu_sync_slab, e);
 	}
 
-	fence_put(sync->last_vm_update);
+	dma_fence_put(sync->last_vm_update);
 }
 
 /**