blob: a2283cc9f716dc89622a5966fd6e894d8ddefee9 [file] [log] [blame]
Bart Van Asschebca6b062018-09-26 14:01:03 -07001/* 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
Alan Stern52abca62020-12-08 21:29:51 -08009static inline int blk_pm_resume_queue(const bool pm, struct request_queue *q)
Bart Van Assche154b00d2018-09-26 14:01:05 -070010{
Alan Stern52abca62020-12-08 21:29:51 -080011 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;
Bart Van Assche154b00d2018-09-26 14:01:05 -070017}
18
19static 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
Bart Van Asschebca6b062018-09-26 14:01:03 -070025static inline void blk_pm_requeue_request(struct request *rq)
26{
Christoph Hellwig0d945c12018-11-15 12:17:28 -070027 lockdep_assert_held(&rq->q->queue_lock);
Bart Van Assche154b00d2018-09-26 14:01:05 -070028
Bart Van Asschebca6b062018-09-26 14:01:03 -070029 if (rq->q->dev && !(rq->rq_flags & RQF_PM))
30 rq->q->nr_pending--;
31}
32
33static inline void blk_pm_add_request(struct request_queue *q,
34 struct request *rq)
35{
Christoph Hellwig0d945c12018-11-15 12:17:28 -070036 lockdep_assert_held(&q->queue_lock);
Bart Van Assche154b00d2018-09-26 14:01:05 -070037
38 if (q->dev && !(rq->rq_flags & RQF_PM))
39 q->nr_pending++;
Bart Van Asschebca6b062018-09-26 14:01:03 -070040}
41
42static inline void blk_pm_put_request(struct request *rq)
43{
Christoph Hellwig0d945c12018-11-15 12:17:28 -070044 lockdep_assert_held(&rq->q->queue_lock);
Bart Van Assche154b00d2018-09-26 14:01:05 -070045
46 if (rq->q->dev && !(rq->rq_flags & RQF_PM))
47 --rq->q->nr_pending;
Bart Van Asschebca6b062018-09-26 14:01:03 -070048}
49#else
Alan Stern52abca62020-12-08 21:29:51 -080050static inline int blk_pm_resume_queue(const bool pm, struct request_queue *q)
Bart Van Assche154b00d2018-09-26 14:01:05 -070051{
Alan Stern52abca62020-12-08 21:29:51 -080052 return 1;
Bart Van Assche154b00d2018-09-26 14:01:05 -070053}
54
55static inline void blk_pm_mark_last_busy(struct request *rq)
56{
57}
58
Bart Van Asschebca6b062018-09-26 14:01:03 -070059static inline void blk_pm_requeue_request(struct request *rq)
60{
61}
62
63static inline void blk_pm_add_request(struct request_queue *q,
64 struct request *rq)
65{
66}
67
68static inline void blk_pm_put_request(struct request *rq)
69{
70}
71#endif
72
73#endif /* _BLOCK_BLK_PM_H_ */