29 void blk_pm_runtime_init(struct request_queue *q, struct device *dev)  in blk_pm_runtime_init()  argument
31 	q->dev = dev;  in blk_pm_runtime_init()
32 	q->rpm_status = RPM_ACTIVE;  in blk_pm_runtime_init()
33 	pm_runtime_set_autosuspend_delay(q->dev, -1);  in blk_pm_runtime_init()
34 	pm_runtime_use_autosuspend(q->dev);  in blk_pm_runtime_init()
59 int blk_pre_runtime_suspend(struct request_queue *q)  in blk_pre_runtime_suspend()  argument
63 	if (!q->dev)  in blk_pre_runtime_suspend()
66 	WARN_ON_ONCE(q->rpm_status != RPM_ACTIVE);  in blk_pre_runtime_suspend()
68 	spin_lock_irq(&q->queue_lock);  in blk_pre_runtime_suspend()
69 	q->rpm_status = RPM_SUSPENDING;  in blk_pre_runtime_suspend()
70 	spin_unlock_irq(&q->queue_lock);  in blk_pre_runtime_suspend()
78 	blk_set_pm_only(q);  in blk_pre_runtime_suspend()
81 	blk_freeze_queue_start(q);  in blk_pre_runtime_suspend()
88 	percpu_ref_switch_to_atomic_sync(&q->q_usage_counter);  in blk_pre_runtime_suspend()
89 	if (percpu_ref_is_zero(&q->q_usage_counter))  in blk_pre_runtime_suspend()
92 	blk_mq_unfreeze_queue(q);  in blk_pre_runtime_suspend()
95 		spin_lock_irq(&q->queue_lock);  in blk_pre_runtime_suspend()
96 		q->rpm_status = RPM_ACTIVE;  in blk_pre_runtime_suspend()
97 		pm_runtime_mark_last_busy(q->dev);  in blk_pre_runtime_suspend()
98 		spin_unlock_irq(&q->queue_lock);  in blk_pre_runtime_suspend()
100 		blk_clear_pm_only(q);  in blk_pre_runtime_suspend()
120 void blk_post_runtime_suspend(struct request_queue *q, int err)  in blk_post_runtime_suspend()  argument
122 	if (!q->dev)  in blk_post_runtime_suspend()
125 	spin_lock_irq(&q->queue_lock);  in blk_post_runtime_suspend()
127 		q->rpm_status = RPM_SUSPENDED;  in blk_post_runtime_suspend()
129 		q->rpm_status = RPM_ACTIVE;  in blk_post_runtime_suspend()
130 		pm_runtime_mark_last_busy(q->dev);  in blk_post_runtime_suspend()
132 	spin_unlock_irq(&q->queue_lock);  in blk_post_runtime_suspend()
135 		blk_clear_pm_only(q);  in blk_post_runtime_suspend()
150 void blk_pre_runtime_resume(struct request_queue *q)  in blk_pre_runtime_resume()  argument
152 	if (!q->dev)  in blk_pre_runtime_resume()
155 	spin_lock_irq(&q->queue_lock);  in blk_pre_runtime_resume()
156 	q->rpm_status = RPM_RESUMING;  in blk_pre_runtime_resume()
157 	spin_unlock_irq(&q->queue_lock);  in blk_pre_runtime_resume()
174 void blk_post_runtime_resume(struct request_queue *q)  in blk_post_runtime_resume()  argument
176 	blk_set_runtime_active(q);  in blk_post_runtime_resume()
197 void blk_set_runtime_active(struct request_queue *q)  in blk_set_runtime_active()  argument
201 	if (!q->dev)  in blk_set_runtime_active()
204 	spin_lock_irq(&q->queue_lock);  in blk_set_runtime_active()
205 	old_status = q->rpm_status;  in blk_set_runtime_active()
206 	q->rpm_status = RPM_ACTIVE;  in blk_set_runtime_active()
207 	pm_runtime_mark_last_busy(q->dev);  in blk_set_runtime_active()
208 	pm_request_autosuspend(q->dev);  in blk_set_runtime_active()
209 	spin_unlock_irq(&q->queue_lock);  in blk_set_runtime_active()
212 		blk_clear_pm_only(q);  in blk_set_runtime_active()