Extract of useful code from the timeline work. Let's use just a single
stub fence instance instead of allocating a new one all the time.
Signed-off-by: Chunming Zhou <david1.z...@amd.com>
Signed-off-by: Christian König <christian.koe...@amd.com>
---
drivers/gpu/drm/drm_syncobj.c | 58 +++++++++++--------------------------------
1 file changed, 14 insertions(+), 44 deletions(-)
diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c
index e2c5b3ca4824..5c5ba1f14307 100644
--- a/drivers/gpu/drm/drm_syncobj.c
+++ b/drivers/gpu/drm/drm_syncobj.c
@@ -56,22 +56,6 @@
#include "drm_internal.h"
#include <drm/drm_syncobj.h>
-struct drm_syncobj_stub_fence {
- struct dma_fence base;
- spinlock_t lock;
-};
-
-static const char *drm_syncobj_stub_fence_get_name(struct dma_fence *fence)
-{
- return "syncobjstub";
-}
-
-static const struct dma_fence_ops drm_syncobj_stub_fence_ops = {
- .get_driver_name = drm_syncobj_stub_fence_get_name,
- .get_timeline_name = drm_syncobj_stub_fence_get_name,
-};
-
-
/**
* drm_syncobj_find - lookup and reference a sync object.
* @file_private: drm file private pointer
@@ -190,23 +174,18 @@ void drm_syncobj_replace_fence(struct drm_syncobj
*syncobj,
}
EXPORT_SYMBOL(drm_syncobj_replace_fence);
-static int drm_syncobj_assign_null_handle(struct drm_syncobj *syncobj)
+/**
+ * drm_syncobj_assign_null_handle - assign a stub fence to the sync object
+ * @syncobj: sync object to assign the fence on
+ *
+ * Assign a already signaled stub fence to the sync object.
+ */
+static void drm_syncobj_assign_null_handle(struct drm_syncobj *syncobj)
{
- struct drm_syncobj_stub_fence *fence;
- fence = kzalloc(sizeof(*fence), GFP_KERNEL);
- if (fence == NULL)
- return -ENOMEM;
+ struct dma_fence *fence = dma_fence_get_stub();
- spin_lock_init(&fence->lock);
- dma_fence_init(&fence->base, &drm_syncobj_stub_fence_ops,
- &fence->lock, 0, 0);
- dma_fence_signal(&fence->base);
-
- drm_syncobj_replace_fence(syncobj, 0, &fence->base);
-
- dma_fence_put(&fence->base);
-
- return 0;
+ drm_syncobj_replace_fence(syncobj, 0, fence);
+ dma_fence_put(fence);
}
/**
@@ -274,7 +253,6 @@ EXPORT_SYMBOL(drm_syncobj_free);
int drm_syncobj_create(struct drm_syncobj **out_syncobj, uint32_t flags,
struct dma_fence *fence)
{
- int ret;
struct drm_syncobj *syncobj;
syncobj = kzalloc(sizeof(struct drm_syncobj), GFP_KERNEL);
@@ -285,13 +263,8 @@ int drm_syncobj_create(struct drm_syncobj **out_syncobj,
uint32_t flags,
INIT_LIST_HEAD(&syncobj->cb_list);
spin_lock_init(&syncobj->lock);
- if (flags & DRM_SYNCOBJ_CREATE_SIGNALED) {
- ret = drm_syncobj_assign_null_handle(syncobj);
- if (ret < 0) {
- drm_syncobj_put(syncobj);
- return ret;
- }
- }
+ if (flags & DRM_SYNCOBJ_CREATE_SIGNALED)
+ drm_syncobj_assign_null_handle(syncobj);
if (fence)
drm_syncobj_replace_fence(syncobj, 0, fence);
@@ -982,11 +955,8 @@ drm_syncobj_signal_ioctl(struct drm_device *dev, void
*data,
if (ret < 0)
return ret;
- for (i = 0; i < args->count_handles; i++) {
- ret = drm_syncobj_assign_null_handle(syncobjs[i]);
- if (ret < 0)
- break;
- }
+ for (i = 0; i < args->count_handles; i++)
+ drm_syncobj_assign_null_handle(syncobjs[i]);
drm_syncobj_array_free(syncobjs, args->count_handles);
--
2.14.1
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