53 	struct request_queue *q = rq->q;  in blk_stat_add()  local
65 	list_for_each_entry_rcu(cb, &q->stats->callbacks, list) {  in blk_stat_add()
136 void blk_stat_add_callback(struct request_queue *q,  in blk_stat_add_callback()  argument
151 	spin_lock_irqsave(&q->stats->lock, flags);  in blk_stat_add_callback()
152 	list_add_tail_rcu(&cb->list, &q->stats->callbacks);  in blk_stat_add_callback()
153 	blk_queue_flag_set(QUEUE_FLAG_STATS, q);  in blk_stat_add_callback()
154 	spin_unlock_irqrestore(&q->stats->lock, flags);  in blk_stat_add_callback()
157 void blk_stat_remove_callback(struct request_queue *q,  in blk_stat_remove_callback()  argument
162 	spin_lock_irqsave(&q->stats->lock, flags);  in blk_stat_remove_callback()
164 	if (list_empty(&q->stats->callbacks) && !q->stats->enable_accounting)  in blk_stat_remove_callback()
165 		blk_queue_flag_clear(QUEUE_FLAG_STATS, q);  in blk_stat_remove_callback()
166 	spin_unlock_irqrestore(&q->stats->lock, flags);  in blk_stat_remove_callback()
187 void blk_stat_enable_accounting(struct request_queue *q)  in blk_stat_enable_accounting()  argument
191 	spin_lock_irqsave(&q->stats->lock, flags);  in blk_stat_enable_accounting()
192 	q->stats->enable_accounting = true;  in blk_stat_enable_accounting()
193 	blk_queue_flag_set(QUEUE_FLAG_STATS, q);  in blk_stat_enable_accounting()
194 	spin_unlock_irqrestore(&q->stats->lock, flags);  in blk_stat_enable_accounting()