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

4 files changed, 29 insertions, 28 deletions

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index fc6217dfe401..915e0d1c316a 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -148,7 +148,7 @@ static void ttm_bo_release_list(struct kref *list_kref)
 	BUG_ON(!list_empty(&bo->ddestroy));
 	ttm_tt_destroy(bo->ttm);
 	atomic_dec(&bo->glob->bo_count);
-	fence_put(bo->moving);
+	dma_fence_put(bo->moving);
 	if (bo->resv == &bo->ttm_resv)
 		reservation_object_fini(&bo->ttm_resv);
 	mutex_destroy(&bo->wu_mutex);
@@ -426,20 +426,20 @@ static void ttm_bo_cleanup_memtype_use(struct ttm_buffer_object *bo)
 static void ttm_bo_flush_all_fences(struct ttm_buffer_object *bo)
 {
 	struct reservation_object_list *fobj;
-	struct fence *fence;
+	struct dma_fence *fence;
 	int i;
 
 	fobj = reservation_object_get_list(bo->resv);
 	fence = reservation_object_get_excl(bo->resv);
 	if (fence && !fence->ops->signaled)
-		fence_enable_sw_signaling(fence);
+		dma_fence_enable_sw_signaling(fence);
 
 	for (i = 0; fobj && i < fobj->shared_count; ++i) {
 		fence = rcu_dereference_protected(fobj->shared[i],
 					reservation_object_held(bo->resv));
 
 		if (!fence->ops->signaled)
-			fence_enable_sw_signaling(fence);
+			dma_fence_enable_sw_signaling(fence);
 	}
 }
 
@@ -792,11 +792,11 @@ static int ttm_bo_add_move_fence(struct ttm_buffer_object *bo,
 				 struct ttm_mem_type_manager *man,
 				 struct ttm_mem_reg *mem)
 {
-	struct fence *fence;
+	struct dma_fence *fence;
 	int ret;
 
 	spin_lock(&man->move_lock);
-	fence = fence_get(man->move);
+	fence = dma_fence_get(man->move);
 	spin_unlock(&man->move_lock);
 
 	if (fence) {
@@ -806,7 +806,7 @@ static int ttm_bo_add_move_fence(struct ttm_buffer_object *bo,
 		if (unlikely(ret))
 			return ret;
 
-		fence_put(bo->moving);
+		dma_fence_put(bo->moving);
 		bo->moving = fence;
 	}
 
@@ -1286,7 +1286,7 @@ static int ttm_bo_force_list_clean(struct ttm_bo_device *bdev,
 {
 	struct ttm_mem_type_manager *man = &bdev->man[mem_type];
 	struct ttm_bo_global *glob = bdev->glob;
-	struct fence *fence;
+	struct dma_fence *fence;
 	int ret;
 
 	/*
@@ -1309,12 +1309,12 @@ static int ttm_bo_force_list_clean(struct ttm_bo_device *bdev,
 	spin_unlock(&glob->lru_lock);
 
 	spin_lock(&man->move_lock);
-	fence = fence_get(man->move);
+	fence = dma_fence_get(man->move);
 	spin_unlock(&man->move_lock);
 
 	if (fence) {
-		ret = fence_wait(fence, false);
-		fence_put(fence);
+		ret = dma_fence_wait(fence, false);
+		dma_fence_put(fence);
 		if (ret) {
 			if (allow_errors) {
 				return ret;
@@ -1343,7 +1343,7 @@ int ttm_bo_clean_mm(struct ttm_bo_device *bdev, unsigned mem_type)
 		       mem_type);
 		return ret;
 	}
-	fence_put(man->move);
+	dma_fence_put(man->move);
 
 	man->use_type = false;
 	man->has_type = false;
diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c
index bf6e21655c57..d0459b392e5e 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_util.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
@@ -644,7 +644,7 @@ void ttm_bo_kunmap(struct ttm_bo_kmap_obj *map)
 EXPORT_SYMBOL(ttm_bo_kunmap);
 
 int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
-			      struct fence *fence,
+			      struct dma_fence *fence,
 			      bool evict,
 			      struct ttm_mem_reg *new_mem)
 {
@@ -674,8 +674,8 @@ int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
 		 * operation has completed.
 		 */
 
-		fence_put(bo->moving);
-		bo->moving = fence_get(fence);
+		dma_fence_put(bo->moving);
+		bo->moving = dma_fence_get(fence);
 
 		ret = ttm_buffer_object_transfer(bo, &ghost_obj);
 		if (ret)
@@ -706,7 +706,7 @@ int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
 EXPORT_SYMBOL(ttm_bo_move_accel_cleanup);
 
 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)
 {
 	struct ttm_bo_device *bdev = bo->bdev;
@@ -730,8 +730,8 @@ int ttm_bo_pipeline_move(struct ttm_buffer_object *bo,
 		 * operation has completed.
 		 */
 
-		fence_put(bo->moving);
-		bo->moving = fence_get(fence);
+		dma_fence_put(bo->moving);
+		bo->moving = dma_fence_get(fence);
 
 		ret = ttm_buffer_object_transfer(bo, &ghost_obj);
 		if (ret)
@@ -761,16 +761,16 @@ int ttm_bo_pipeline_move(struct ttm_buffer_object *bo,
 		 */
 
 		spin_lock(&from->move_lock);
-		if (!from->move || fence_is_later(fence, from->move)) {
-			fence_put(from->move);
-			from->move = fence_get(fence);
+		if (!from->move || dma_fence_is_later(fence, from->move)) {
+			dma_fence_put(from->move);
+			from->move = dma_fence_get(fence);
 		}
 		spin_unlock(&from->move_lock);
 
 		ttm_bo_free_old_node(bo);
 
-		fence_put(bo->moving);
-		bo->moving = fence_get(fence);
+		dma_fence_put(bo->moving);
+		bo->moving = dma_fence_get(fence);
 
 	} else {
 		/**
diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c
index a6ed9d5e5167..4748aedc933a 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_vm.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c
@@ -54,7 +54,7 @@ static int ttm_bo_vm_fault_idle(struct ttm_buffer_object *bo,
 	/*
 	 * Quick non-stalling check for idle.
 	 */
-	if (fence_is_signaled(bo->moving))
+	if (dma_fence_is_signaled(bo->moving))
 		goto out_clear;
 
 	/*
@@ -67,14 +67,14 @@ static int ttm_bo_vm_fault_idle(struct ttm_buffer_object *bo,
 			goto out_unlock;
 
 		up_read(&vma->vm_mm->mmap_sem);
-		(void) fence_wait(bo->moving, true);
+		(void) dma_fence_wait(bo->moving, true);
 		goto out_unlock;
 	}
 
 	/*
 	 * Ordinary wait.
 	 */
-	ret = fence_wait(bo->moving, true);
+	ret = dma_fence_wait(bo->moving, true);
 	if (unlikely(ret != 0)) {
 		ret = (ret != -ERESTARTSYS) ? VM_FAULT_SIGBUS :
 			VM_FAULT_NOPAGE;
@@ -82,7 +82,7 @@ static int ttm_bo_vm_fault_idle(struct ttm_buffer_object *bo,
 	}
 
 out_clear:
-	fence_put(bo->moving);
+	dma_fence_put(bo->moving);
 	bo->moving = NULL;
 
 out_unlock:
diff --git a/drivers/gpu/drm/ttm/ttm_execbuf_util.c b/drivers/gpu/drm/ttm/ttm_execbuf_util.c
index a80717b35dc6..d35bc491e8de 100644
--- a/drivers/gpu/drm/ttm/ttm_execbuf_util.c
+++ b/drivers/gpu/drm/ttm/ttm_execbuf_util.c
@@ -179,7 +179,8 @@ int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket,
 EXPORT_SYMBOL(ttm_eu_reserve_buffers);
 
 void ttm_eu_fence_buffer_objects(struct ww_acquire_ctx *ticket,
-				 struct list_head *list, struct fence *fence)
+				 struct list_head *list,
+				 struct dma_fence *fence)
 {
 	struct ttm_validate_buffer *entry;
 	struct ttm_buffer_object *bo;