| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef WB_THROTTLE_H |
| 3 | #define WB_THROTTLE_H |
| 4 | |
| 5 | #ifdef CONFIG_BLK_WBT |
| 6 | |
| 7 | int wbt_init(struct gendisk *disk); |
| 8 | void wbt_disable_default(struct gendisk *disk); |
| 9 | void wbt_enable_default(struct gendisk *disk); |
| 10 | |
| 11 | u64 wbt_get_min_lat(struct request_queue *q); |
| 12 | void wbt_set_min_lat(struct request_queue *q, u64 val); |
| 13 | bool wbt_disabled(struct request_queue *); |
| 14 | |
| 15 | void wbt_set_write_cache(struct request_queue *, bool); |
| 16 | |
| 17 | u64 wbt_default_latency_nsec(struct request_queue *); |
| 18 | |
| 19 | #else |
| 20 | |
| 21 | static inline int wbt_init(struct gendisk *disk) |
| 22 | { |
| 23 | return -EINVAL; |
| 24 | } |
| 25 | static inline void wbt_disable_default(struct gendisk *disk) |
| 26 | { |
| 27 | } |
| 28 | static inline void wbt_enable_default(struct gendisk *disk) |
| 29 | { |
| 30 | } |
| 31 | static inline void wbt_set_write_cache(struct request_queue *q, bool wc) |
| 32 | { |
| 33 | } |
| 34 | static inline u64 wbt_get_min_lat(struct request_queue *q) |
| 35 | { |
| 36 | return 0; |
| 37 | } |
| 38 | static inline void wbt_set_min_lat(struct request_queue *q, u64 val) |
| 39 | { |
| 40 | } |
| 41 | static inline u64 wbt_default_latency_nsec(struct request_queue *q) |
| 42 | { |
| 43 | return 0; |
| 44 | } |
| 45 | static inline bool wbt_disabled(struct request_queue *q) |
| 46 | { |
| 47 | return true; |
| 48 | } |
| 49 | |
| 50 | #endif /* CONFIG_BLK_WBT */ |
| 51 | |
| 52 | #endif |