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path: root/drivers/gpu/drm/drm_gem.c
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Diffstat (limited to 'drivers/gpu/drm/drm_gem.c')
-rw-r--r--drivers/gpu/drm/drm_gem.c49
1 files changed, 32 insertions, 17 deletions
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index aa89d4b0b4c4..33dad3fa6043 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -124,6 +124,31 @@ drm_gem_destroy(struct drm_device *dev)
}
/**
+ * Initialize an already allocate GEM object of the specified size with
+ * shmfs backing store.
+ */
+int drm_gem_object_init(struct drm_device *dev,
+ struct drm_gem_object *obj, size_t size)
+{
+ BUG_ON((size & (PAGE_SIZE - 1)) != 0);
+
+ obj->dev = dev;
+ obj->filp = shmem_file_setup("drm mm object", size, VM_NORESERVE);
+ if (IS_ERR(obj->filp))
+ return -ENOMEM;
+
+ kref_init(&obj->refcount);
+ kref_init(&obj->handlecount);
+ obj->size = size;
+
+ atomic_inc(&dev->object_count);
+ atomic_add(obj->size, &dev->object_memory);
+
+ return 0;
+}
+EXPORT_SYMBOL(drm_gem_object_init);
+
+/**
* Allocate a GEM object of the specified size with shmfs backing store
*/
struct drm_gem_object *
@@ -131,28 +156,22 @@ drm_gem_object_alloc(struct drm_device *dev, size_t size)
{
struct drm_gem_object *obj;
- BUG_ON((size & (PAGE_SIZE - 1)) != 0);
-
obj = kzalloc(sizeof(*obj), GFP_KERNEL);
if (!obj)
goto free;
- obj->dev = dev;
- obj->filp = shmem_file_setup("drm mm object", size, VM_NORESERVE);
- if (IS_ERR(obj->filp))
+ if (drm_gem_object_init(dev, obj, size) != 0)
goto free;
- kref_init(&obj->refcount);
- kref_init(&obj->handlecount);
- obj->size = size;
if (dev->driver->gem_init_object != NULL &&
dev->driver->gem_init_object(obj) != 0) {
goto fput;
}
- atomic_inc(&dev->object_count);
- atomic_add(obj->size, &dev->object_memory);
return obj;
fput:
+ /* Object_init mangles the global counters - readjust them. */
+ atomic_dec(&dev->object_count);
+ atomic_sub(obj->size, &dev->object_memory);
fput(obj->filp);
free:
kfree(obj);
@@ -403,15 +422,15 @@ drm_gem_release(struct drm_device *dev, struct drm_file *file_private)
idr_destroy(&file_private->object_idr);
}
-static void
-drm_gem_object_free_common(struct drm_gem_object *obj)
+void
+drm_gem_object_release(struct drm_gem_object *obj)
{
struct drm_device *dev = obj->dev;
fput(obj->filp);
atomic_dec(&dev->object_count);
atomic_sub(obj->size, &dev->object_memory);
- kfree(obj);
}
+EXPORT_SYMBOL(drm_gem_object_release);
/**
* Called after the last reference to the object has been lost.
@@ -429,8 +448,6 @@ drm_gem_object_free(struct kref *kref)
if (dev->driver->gem_free_object != NULL)
dev->driver->gem_free_object(obj);
-
- drm_gem_object_free_common(obj);
}
EXPORT_SYMBOL(drm_gem_object_free);
@@ -453,8 +470,6 @@ drm_gem_object_free_unlocked(struct kref *kref)
dev->driver->gem_free_object(obj);
mutex_unlock(&dev->struct_mutex);
}
-
- drm_gem_object_free_common(obj);
}
EXPORT_SYMBOL(drm_gem_object_free_unlocked);