projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 8cb2d8bf GC |
2 | #ifndef _HWBM_H |
| 3 | #define _HWBM_H | |
| 4 | ||
| 949d6b40 JK |
5 | #include <linux/mutex.h> |
| 6 | ||
| 8cb2d8bf GC |
7 | struct hwbm_pool { |
| 8 | /* Capacity of the pool */ | |
| 9 | int size; | |
| 10 | /* Size of the buffers managed */ | |
| 11 | int frag_size; | |
| 12 | /* Number of buffers currently used by this pool */ | |
| 13 | int buf_num; | |
| 14 | /* constructor called during alocation */ | |
| 15 | int (*construct)(struct hwbm_pool *bm_pool, void *buf); | |
| 16 | /* protect acces to the buffer counter*/ | |
| 6dcdd884 | 17 | struct mutex buf_lock; |
| 8cb2d8bf GC |
18 | /* private data */ |
| 19 | void *priv; | |
| 20 | }; | |
| 21 | #ifdef CONFIG_HWBM | |
| 22 | void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf); | |
| 23 | int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp); | |
| 6dcdd884 | 24 | int hwbm_pool_add(struct hwbm_pool *bm_pool, unsigned int buf_num); |
| 8cb2d8bf | 25 | #else |
| 91e2e576 BDC |
26 | static inline void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf) {} |
| 27 | ||
| 28 | static inline int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp) | |
| 29 | { return 0; } | |
| 30 | ||
| 31 | static inline int hwbm_pool_add(struct hwbm_pool *bm_pool, | |
| 32 | unsigned int buf_num) | |
| 8cb2d8bf GC |
33 | { return 0; } |
| 34 | #endif /* CONFIG_HWBM */ | |
| 35 | #endif /* _HWBM_H */ |