diff options
Diffstat (limited to 'drivers/gpu/drm/drm_gem_shmem_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_gem_shmem_helper.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c index f750063968ef..0a7e3b664bc2 100644 --- a/drivers/gpu/drm/drm_gem_shmem_helper.c +++ b/drivers/gpu/drm/drm_gem_shmem_helper.c @@ -461,6 +461,33 @@ bool drm_gem_shmem_purge(struct drm_gem_object *obj) EXPORT_SYMBOL(drm_gem_shmem_purge); /** + * drm_gem_shmem_create_object_cached - Create a shmem buffer object with + * cached mappings + * @dev: DRM device + * @size: Size of the object to allocate + * + * By default, shmem buffer objects use writecombine mappings. This + * function implements struct drm_driver.gem_create_object for shmem + * buffer objects with cached mappings. + * + * Returns: + * A struct drm_gem_shmem_object * on success or NULL negative on failure. + */ +struct drm_gem_object * +drm_gem_shmem_create_object_cached(struct drm_device *dev, size_t size) +{ + struct drm_gem_shmem_object *shmem; + + shmem = kzalloc(sizeof(*shmem), GFP_KERNEL); + if (!shmem) + return NULL; + shmem->map_cached = true; + + return &shmem->base; +} +EXPORT_SYMBOL(drm_gem_shmem_create_object_cached); + +/** * drm_gem_shmem_dumb_create - Create a dumb shmem buffer object * @file: DRM file structure to create the dumb buffer for * @dev: DRM device |