1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ZBUD_H_
3 #define _ZBUD_H_
4 
5 #include <linux/types.h>
6 
7 struct zbud_pool;
8 
9 struct zbud_ops {
10 	int (*evict)(struct zbud_pool *pool, unsigned long handle);
11 };
12 
13 struct zbud_pool *zbud_create_pool(gfp_t gfp, const struct zbud_ops *ops);
14 void zbud_destroy_pool(struct zbud_pool *pool);
15 int zbud_alloc(struct zbud_pool *pool, size_t size, gfp_t gfp,
16 	unsigned long *handle);
17 void zbud_free(struct zbud_pool *pool, unsigned long handle);
18 int zbud_reclaim_page(struct zbud_pool *pool, unsigned int retries);
19 void *zbud_map(struct zbud_pool *pool, unsigned long handle);
20 void zbud_unmap(struct zbud_pool *pool, unsigned long handle);
21 u64 zbud_get_pool_size(struct zbud_pool *pool);
22 
23 #endif /* _ZBUD_H_ */
24