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