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, 27 insertions, 26 deletions

diff --git a/drivers/gpu/drm/vgem/vgem_fence.c b/drivers/gpu/drm/vgem/vgem_fence.c
index 5c57c1ffa1f9..488909a21ed8 100644
--- a/drivers/gpu/drm/vgem/vgem_fence.c
+++ b/drivers/gpu/drm/vgem/vgem_fence.c
@@ -28,56 +28,57 @@
 #define VGEM_FENCE_TIMEOUT (10*HZ)
 
 struct vgem_fence {
-	struct fence base;
+	struct dma_fence base;
 	struct spinlock lock;
 	struct timer_list timer;
 };
 
-static const char *vgem_fence_get_driver_name(struct fence *fence)
+static const char *vgem_fence_get_driver_name(struct dma_fence *fence)
 {
 	return "vgem";
 }
 
-static const char *vgem_fence_get_timeline_name(struct fence *fence)
+static const char *vgem_fence_get_timeline_name(struct dma_fence *fence)
 {
 	return "unbound";
 }
 
-static bool vgem_fence_signaled(struct fence *fence)
+static bool vgem_fence_signaled(struct dma_fence *fence)
 {
 	return false;
 }
 
-static bool vgem_fence_enable_signaling(struct fence *fence)
+static bool vgem_fence_enable_signaling(struct dma_fence *fence)
 {
 	return true;
 }
 
-static void vgem_fence_release(struct fence *base)
+static void vgem_fence_release(struct dma_fence *base)
 {
 	struct vgem_fence *fence = container_of(base, typeof(*fence), base);
 
 	del_timer_sync(&fence->timer);
-	fence_free(&fence->base);
+	dma_fence_free(&fence->base);
 }
 
-static void vgem_fence_value_str(struct fence *fence, char *str, int size)
+static void vgem_fence_value_str(struct dma_fence *fence, char *str, int size)
 {
 	snprintf(str, size, "%u", fence->seqno);
 }
 
-static void vgem_fence_timeline_value_str(struct fence *fence, char *str,
+static void vgem_fence_timeline_value_str(struct dma_fence *fence, char *str,
 					  int size)
 {
-	snprintf(str, size, "%u", fence_is_signaled(fence) ? fence->seqno : 0);
+	snprintf(str, size, "%u",
+		 dma_fence_is_signaled(fence) ? fence->seqno : 0);
 }
 
-static const struct fence_ops vgem_fence_ops = {
+static const struct dma_fence_ops vgem_fence_ops = {
 	.get_driver_name = vgem_fence_get_driver_name,
 	.get_timeline_name = vgem_fence_get_timeline_name,
 	.enable_signaling = vgem_fence_enable_signaling,
 	.signaled = vgem_fence_signaled,
-	.wait = fence_default_wait,
+	.wait = dma_fence_default_wait,
 	.release = vgem_fence_release,
 
 	.fence_value_str = vgem_fence_value_str,
@@ -88,11 +89,11 @@ static void vgem_fence_timeout(unsigned long data)
 {
 	struct vgem_fence *fence = (struct vgem_fence *)data;
 
-	fence_signal(&fence->base);
+	dma_fence_signal(&fence->base);
 }
 
-static struct fence *vgem_fence_create(struct vgem_file *vfile,
-				       unsigned int flags)
+static struct dma_fence *vgem_fence_create(struct vgem_file *vfile,
+					   unsigned int flags)
 {
 	struct vgem_fence *fence;
 
@@ -101,8 +102,8 @@ static struct fence *vgem_fence_create(struct vgem_file *vfile,
 		return NULL;
 
 	spin_lock_init(&fence->lock);
-	fence_init(&fence->base, &vgem_fence_ops, &fence->lock,
-		   fence_context_alloc(1), 1);
+	dma_fence_init(&fence->base, &vgem_fence_ops, &fence->lock,
+		       dma_fence_context_alloc(1), 1);
 
 	setup_timer(&fence->timer, vgem_fence_timeout, (unsigned long)fence);
 
@@ -157,7 +158,7 @@ int vgem_fence_attach_ioctl(struct drm_device *dev,
 	struct vgem_file *vfile = file->driver_priv;
 	struct reservation_object *resv;
 	struct drm_gem_object *obj;
-	struct fence *fence;
+	struct dma_fence *fence;
 	int ret;
 
 	if (arg->flags & ~VGEM_FENCE_WRITE)
@@ -209,8 +210,8 @@ int vgem_fence_attach_ioctl(struct drm_device *dev,
 	}
 err_fence:
 	if (ret) {
-		fence_signal(fence);
-		fence_put(fence);
+		dma_fence_signal(fence);
+		dma_fence_put(fence);
 	}
 err:
 	drm_gem_object_unreference_unlocked(obj);
@@ -239,7 +240,7 @@ int vgem_fence_signal_ioctl(struct drm_device *dev,
 {
 	struct vgem_file *vfile = file->driver_priv;
 	struct drm_vgem_fence_signal *arg = data;
-	struct fence *fence;
+	struct dma_fence *fence;
 	int ret = 0;
 
 	if (arg->flags)
@@ -253,11 +254,11 @@ int vgem_fence_signal_ioctl(struct drm_device *dev,
 	if (IS_ERR(fence))
 		return PTR_ERR(fence);
 
-	if (fence_is_signaled(fence))
+	if (dma_fence_is_signaled(fence))
 		ret = -ETIMEDOUT;
 
-	fence_signal(fence);
-	fence_put(fence);
+	dma_fence_signal(fence);
+	dma_fence_put(fence);
 	return ret;
 }
 
@@ -271,8 +272,8 @@ int vgem_fence_open(struct vgem_file *vfile)
 
 static int __vgem_fence_idr_fini(int id, void *p, void *data)
 {
-	fence_signal(p);
-	fence_put(p);
+	dma_fence_signal(p);
+	dma_fence_put(p);
 	return 0;
 }