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
blk_pm_request_resume(struct request_queue * q)9 static inline void blk_pm_request_resume(struct request_queue *q)
10 {
11 	if (q->dev && (q->rpm_status == RPM_SUSPENDED ||
12 		       q->rpm_status == RPM_SUSPENDING))
13 		pm_request_resume(q->dev);
14 }
15 
blk_pm_mark_last_busy(struct request * rq)16 static inline void blk_pm_mark_last_busy(struct request *rq)
17 {
18 	if (rq->q->dev && !(rq->rq_flags & RQF_PM))
19 		pm_runtime_mark_last_busy(rq->q->dev);
20 }
21 
blk_pm_requeue_request(struct request * rq)22 static inline void blk_pm_requeue_request(struct request *rq)
23 {
24 	lockdep_assert_held(&rq->q->queue_lock);
25 
26 	if (rq->q->dev && !(rq->rq_flags & RQF_PM))
27 		rq->q->nr_pending--;
28 }
29 
blk_pm_add_request(struct request_queue * q,struct request * rq)30 static inline void blk_pm_add_request(struct request_queue *q,
31 				      struct request *rq)
32 {
33 	lockdep_assert_held(&q->queue_lock);
34 
35 	if (q->dev && !(rq->rq_flags & RQF_PM))
36 		q->nr_pending++;
37 }
38 
blk_pm_put_request(struct request * rq)39 static inline void blk_pm_put_request(struct request *rq)
40 {
41 	lockdep_assert_held(&rq->q->queue_lock);
42 
43 	if (rq->q->dev && !(rq->rq_flags & RQF_PM))
44 		--rq->q->nr_pending;
45 }
46 #else
blk_pm_request_resume(struct request_queue * q)47 static inline void blk_pm_request_resume(struct request_queue *q)
48 {
49 }
50 
blk_pm_mark_last_busy(struct request * rq)51 static inline void blk_pm_mark_last_busy(struct request *rq)
52 {
53 }
54 
blk_pm_requeue_request(struct request * rq)55 static inline void blk_pm_requeue_request(struct request *rq)
56 {
57 }
58 
blk_pm_add_request(struct request_queue * q,struct request * rq)59 static inline void blk_pm_add_request(struct request_queue *q,
60 				      struct request *rq)
61 {
62 }
63 
blk_pm_put_request(struct request * rq)64 static inline void blk_pm_put_request(struct request *rq)
65 {
66 }
67 #endif
68 
69 #endif /* _BLOCK_BLK_PM_H_ */
70