31 void blk_pm_runtime_init(struct request_queue *q, struct device *dev)  in blk_pm_runtime_init()  argument
33 	q->dev = dev;  in blk_pm_runtime_init()
34 	q->rpm_status = RPM_ACTIVE;  in blk_pm_runtime_init()
35 	pm_runtime_set_autosuspend_delay(q->dev, -1);  in blk_pm_runtime_init()
36 	pm_runtime_use_autosuspend(q->dev);  in blk_pm_runtime_init()
61 int blk_pre_runtime_suspend(struct request_queue *q)  in blk_pre_runtime_suspend()  argument
65 	if (!q->dev)  in blk_pre_runtime_suspend()
68 	WARN_ON_ONCE(q->rpm_status != RPM_ACTIVE);  in blk_pre_runtime_suspend()
76 	blk_set_pm_only(q);  in blk_pre_runtime_suspend()
79 	blk_freeze_queue_start(q);  in blk_pre_runtime_suspend()
86 	percpu_ref_switch_to_atomic_sync(&q->q_usage_counter);  in blk_pre_runtime_suspend()
87 	if (percpu_ref_is_zero(&q->q_usage_counter))  in blk_pre_runtime_suspend()
90 	blk_mq_unfreeze_queue(q);  in blk_pre_runtime_suspend()
92 	spin_lock_irq(&q->queue_lock);  in blk_pre_runtime_suspend()
94 		pm_runtime_mark_last_busy(q->dev);  in blk_pre_runtime_suspend()
96 		q->rpm_status = RPM_SUSPENDING;  in blk_pre_runtime_suspend()
97 	spin_unlock_irq(&q->queue_lock);  in blk_pre_runtime_suspend()
100 		blk_clear_pm_only(q);  in blk_pre_runtime_suspend()
119 void blk_post_runtime_suspend(struct request_queue *q, int err)  in blk_post_runtime_suspend()  argument
121 	if (!q->dev)  in blk_post_runtime_suspend()
124 	spin_lock_irq(&q->queue_lock);  in blk_post_runtime_suspend()
126 		q->rpm_status = RPM_SUSPENDED;  in blk_post_runtime_suspend()
128 		q->rpm_status = RPM_ACTIVE;  in blk_post_runtime_suspend()
129 		pm_runtime_mark_last_busy(q->dev);  in blk_post_runtime_suspend()
131 	spin_unlock_irq(&q->queue_lock);  in blk_post_runtime_suspend()
134 		blk_clear_pm_only(q);  in blk_post_runtime_suspend()
149 void blk_pre_runtime_resume(struct request_queue *q)  in blk_pre_runtime_resume()  argument
151 	if (!q->dev)  in blk_pre_runtime_resume()
154 	spin_lock_irq(&q->queue_lock);  in blk_pre_runtime_resume()
155 	q->rpm_status = RPM_RESUMING;  in blk_pre_runtime_resume()
156 	spin_unlock_irq(&q->queue_lock);  in blk_pre_runtime_resume()
174 void blk_post_runtime_resume(struct request_queue *q, int err)  in blk_post_runtime_resume()  argument
176 	if (!q->dev)  in blk_post_runtime_resume()
179 	spin_lock_irq(&q->queue_lock);  in blk_post_runtime_resume()
181 		q->rpm_status = RPM_ACTIVE;  in blk_post_runtime_resume()
182 		pm_runtime_mark_last_busy(q->dev);  in blk_post_runtime_resume()
183 		pm_request_autosuspend(q->dev);  in blk_post_runtime_resume()
185 		q->rpm_status = RPM_SUSPENDED;  in blk_post_runtime_resume()
187 	spin_unlock_irq(&q->queue_lock);  in blk_post_runtime_resume()
190 		blk_clear_pm_only(q);  in blk_post_runtime_resume()
208 void blk_set_runtime_active(struct request_queue *q)  in blk_set_runtime_active()  argument
210 	if (q->dev) {  in blk_set_runtime_active()
211 		spin_lock_irq(&q->queue_lock);  in blk_set_runtime_active()
212 		q->rpm_status = RPM_ACTIVE;  in blk_set_runtime_active()
213 		pm_runtime_mark_last_busy(q->dev);  in blk_set_runtime_active()
214 		pm_request_autosuspend(q->dev);  in blk_set_runtime_active()
215 		spin_unlock_irq(&q->queue_lock);  in blk_set_runtime_active()