GNU Linux-libre 5.10.219-gnu1
[releases.git] / block / blk-pm.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2
3 #ifndef _BLOCK_BLK_PM_H_
4 #define _BLOCK_BLK_PM_H_
5
6 #include <linux/pm_runtime.h>
7
8 #ifdef CONFIG_PM
9 static inline int blk_pm_resume_queue(const bool pm, struct request_queue *q)
10 {
11         if (!q->dev || !blk_queue_pm_only(q))
12                 return 1;       /* Nothing to do */
13         if (pm && q->rpm_status != RPM_SUSPENDED)
14                 return 1;       /* Request allowed */
15         pm_request_resume(q->dev);
16         return 0;
17 }
18
19 static inline void blk_pm_mark_last_busy(struct request *rq)
20 {
21         if (rq->q->dev && !(rq->rq_flags & RQF_PM))
22                 pm_runtime_mark_last_busy(rq->q->dev);
23 }
24
25 static inline void blk_pm_requeue_request(struct request *rq)
26 {
27         lockdep_assert_held(&rq->q->queue_lock);
28
29         if (rq->q->dev && !(rq->rq_flags & RQF_PM))
30                 rq->q->nr_pending--;
31 }
32
33 static inline void blk_pm_add_request(struct request_queue *q,
34                                       struct request *rq)
35 {
36         lockdep_assert_held(&q->queue_lock);
37
38         if (q->dev && !(rq->rq_flags & RQF_PM))
39                 q->nr_pending++;
40 }
41
42 static inline void blk_pm_put_request(struct request *rq)
43 {
44         lockdep_assert_held(&rq->q->queue_lock);
45
46         if (rq->q->dev && !(rq->rq_flags & RQF_PM))
47                 --rq->q->nr_pending;
48 }
49 #else
50 static inline int blk_pm_resume_queue(const bool pm, struct request_queue *q)
51 {
52         return 1;
53 }
54
55 static inline void blk_pm_mark_last_busy(struct request *rq)
56 {
57 }
58
59 static inline void blk_pm_requeue_request(struct request *rq)
60 {
61 }
62
63 static inline void blk_pm_add_request(struct request_queue *q,
64                                       struct request *rq)
65 {
66 }
67
68 static inline void blk_pm_put_request(struct request *rq)
69 {
70 }
71 #endif
72
73 #endif /* _BLOCK_BLK_PM_H_ */