Allow the callers to supply a dma-fence-proxy for asynchronous waiting on
future fences.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/drm_syncobj.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c
index 42d46414f767..e141db0e1eb6 100644
--- a/drivers/gpu/drm/drm_syncobj.c
+++ b/drivers/gpu/drm/drm_syncobj.c
@@ -184,6 +184,7 @@
*/
#include <linux/anon_inodes.h>
+#include <linux/dma-fence-proxy.h>
#include <linux/file.h>
#include <linux/fs.h>
#include <linux/sched/signal.h>
@@ -324,14 +325,9 @@ void drm_syncobj_replace_fence(struct drm_syncobj *syncobj,
struct dma_fence *old_fence;
struct syncobj_wait_entry *cur, *tmp;
- if (fence)
- dma_fence_get(fence);
-
spin_lock(&syncobj->lock);
- old_fence = rcu_dereference_protected(syncobj->fence,
- lockdep_is_held(&syncobj->lock));
- rcu_assign_pointer(syncobj->fence, fence);
+ old_fence = dma_fence_replace_proxy(&syncobj->fence, fence);
if (fence != old_fence) {
list_for_each_entry_safe(cur, tmp, &syncobj->cb_list, node)
--
2.20.1
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