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author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2010-04-09 19:05:04 (GMT) |
---|---|---|
committer | Dave Airlie <airlied@redhat.com> | 2010-04-20 03:19:25 (GMT) |
commit | 1d397043bcc2c8cdccb584a8ef73131f28f18e4c (patch) | |
tree | 564c09e78bffef21ff65988ea76380db132cc02a | |
parent | 153549b8b63d71a9c5d8cbde887097b995c32bd6 (diff) | |
download | linux-fsl-qoriq-1d397043bcc2c8cdccb584a8ef73131f28f18e4c.tar.xz |
drm: extract drm_gem_object_init
This function can be used by drivers who allocate the drm gem object
on their own. No functional change in here, just preparation.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
-rw-r--r-- | drivers/gpu/drm/drm_gem.c | 39 | ||||
-rw-r--r-- | include/drm/drmP.h | 2 |
2 files changed, 31 insertions, 10 deletions
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c index aa89d4b..3b64d0e 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); diff --git a/include/drm/drmP.h b/include/drm/drmP.h index 2f3b3a0..b3b57b5 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -1432,6 +1432,8 @@ void drm_gem_object_free(struct kref *kref); void drm_gem_object_free_unlocked(struct kref *kref); struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev, size_t size); +int drm_gem_object_init(struct drm_device *dev, + struct drm_gem_object *obj, size_t size); void drm_gem_object_handle_free(struct kref *kref); void drm_gem_vm_open(struct vm_area_struct *vma); void drm_gem_vm_close(struct vm_area_struct *vma); |