drm2/ttm/ttm_object.c

52  * @ref_hash: Hash tables of ref objects, one per ttm_ref_type,
53  * for fast lookup of ref objects given a base object.
96  * @head: List entry for the per-file list of ref-objects.
100  * @obj: Base object this ref object is referencing.
102  * @ref_type: Type of ref object.
107  * a particular ttm_object_file. It also carries a ref count to avoid creating
108  * multiple ref objects if a ttm_object_file references the same base
262 	struct ttm_ref_object *ref;
275 			ref = drm_hash_entry(hash, struct ttm_ref_object, hash);
276 			refcount_acquire(&ref->kref);
282 		ret = ttm_mem_global_alloc(mem_glob, sizeof(*ref),
286 		ref = malloc(sizeof(*ref), M_TTM_OBJ_REF, M_WAITOK);
287 		if (unlikely(ref == NULL)) {
288 			ttm_mem_global_free(mem_glob, sizeof(*ref));
292 		ref->hash.key = base->hash.key;
293 		ref->obj = base;
294 		ref->tfile = tfile;
295 		ref->ref_type = ref_type;
296 		refcount_init(&ref->kref, 1);
299 		ret = drm_ht_insert_item(ht, &ref->hash);
302 			list_add_tail(&ref->head, &tfile->ref_list);
313 		ttm_mem_global_free(mem_glob, sizeof(*ref));
314 		free(ref, M_TTM_OBJ_REF);
320 static void ttm_ref_object_release(struct ttm_ref_object *ref)
322 	struct ttm_base_object *base = ref->obj;
323 	struct ttm_object_file *tfile = ref->tfile;
327 	ht = &tfile->ref_hash[ref->ref_type];
328 	(void)drm_ht_remove_item(ht, &ref->hash);
329 	list_del(&ref->head);
332 	if (ref->ref_type != TTM_REF_USAGE && base->ref_obj_release)
333 		base->ref_obj_release(base, ref->ref_type);
335 	ttm_base_object_unref(&ref->obj);
336 	ttm_mem_global_free(mem_glob, sizeof(*ref));
337 	free(ref, M_TTM_OBJ_REF);
345 	struct ttm_ref_object *ref;
355 	ref = drm_hash_entry(hash, struct ttm_ref_object, hash);
356 	if (refcount_release(&ref->kref))
357 		ttm_ref_object_release(ref);
364 	struct ttm_ref_object *ref;
379 		ref = list_entry(list, struct ttm_ref_object, head);
380 		ttm_ref_object_release(ref);