Bart Van Assche | bca6b06 | 2018-09-26 14:01:03 -0700 | [diff] [blame] | 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 |
Alan Stern | 52abca6 | 2020-12-08 21:29:51 -0800 | [diff] [blame^] | 9 | static inline int blk_pm_resume_queue(const bool pm, struct request_queue *q) |
Bart Van Assche | 154b00d | 2018-09-26 14:01:05 -0700 | [diff] [blame] | 10 | { |
Alan Stern | 52abca6 | 2020-12-08 21:29:51 -0800 | [diff] [blame^] | 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; |
Bart Van Assche | 154b00d | 2018-09-26 14:01:05 -0700 | [diff] [blame] | 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 | |
Bart Van Assche | bca6b06 | 2018-09-26 14:01:03 -0700 | [diff] [blame] | 25 | static inline void blk_pm_requeue_request(struct request *rq) |
| 26 | { |
Christoph Hellwig | 0d945c1 | 2018-11-15 12:17:28 -0700 | [diff] [blame] | 27 | lockdep_assert_held(&rq->q->queue_lock); |
Bart Van Assche | 154b00d | 2018-09-26 14:01:05 -0700 | [diff] [blame] | 28 | |
Bart Van Assche | bca6b06 | 2018-09-26 14:01:03 -0700 | [diff] [blame] | 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 | { |
Christoph Hellwig | 0d945c1 | 2018-11-15 12:17:28 -0700 | [diff] [blame] | 36 | lockdep_assert_held(&q->queue_lock); |
Bart Van Assche | 154b00d | 2018-09-26 14:01:05 -0700 | [diff] [blame] | 37 | |
| 38 | if (q->dev && !(rq->rq_flags & RQF_PM)) |
| 39 | q->nr_pending++; |
Bart Van Assche | bca6b06 | 2018-09-26 14:01:03 -0700 | [diff] [blame] | 40 | } |
| 41 | |
| 42 | static inline void blk_pm_put_request(struct request *rq) |
| 43 | { |
Christoph Hellwig | 0d945c1 | 2018-11-15 12:17:28 -0700 | [diff] [blame] | 44 | lockdep_assert_held(&rq->q->queue_lock); |
Bart Van Assche | 154b00d | 2018-09-26 14:01:05 -0700 | [diff] [blame] | 45 | |
| 46 | if (rq->q->dev && !(rq->rq_flags & RQF_PM)) |
| 47 | --rq->q->nr_pending; |
Bart Van Assche | bca6b06 | 2018-09-26 14:01:03 -0700 | [diff] [blame] | 48 | } |
| 49 | #else |
Alan Stern | 52abca6 | 2020-12-08 21:29:51 -0800 | [diff] [blame^] | 50 | static inline int blk_pm_resume_queue(const bool pm, struct request_queue *q) |
Bart Van Assche | 154b00d | 2018-09-26 14:01:05 -0700 | [diff] [blame] | 51 | { |
Alan Stern | 52abca6 | 2020-12-08 21:29:51 -0800 | [diff] [blame^] | 52 | return 1; |
Bart Van Assche | 154b00d | 2018-09-26 14:01:05 -0700 | [diff] [blame] | 53 | } |
| 54 | |
| 55 | static inline void blk_pm_mark_last_busy(struct request *rq) |
| 56 | { |
| 57 | } |
| 58 | |
Bart Van Assche | bca6b06 | 2018-09-26 14:01:03 -0700 | [diff] [blame] | 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_ */ |