Commit b96f3cab authored by Bart Van Assche's avatar Bart Van Assche Committed by Jens Axboe
Browse files

block/bfq: Enable I/O statistics 



BFQ uses io_start_time_ns. That member variable is only set if I/O
statistics are enabled. Hence this patch that enables I/O statistics
at the time BFQ is associated with a request queue.

Compile-tested only.

Reported-by: default avatarCixi Geng <cixi.geng1@unisoc.com>
Cc: Cixi Geng <cixi.geng1@unisoc.com>
Cc: Yu Kuai <yukuai3@huawei.com>
Cc: Paolo Valente <paolo.valente@unimore.it>
Reviewed-by: default avatarJan Kara <jack@suse.cz>
Signed-off-by: default avatarBart Van Assche <bvanassche@acm.org>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 6cfeadbf

block/bfq-iosched.c

+3 −0
Original line number Diff line number Diff line
@@ -7046,6 +7046,7 @@ static void bfq_exit_queue(struct elevator_queue *e) 
	spin_unlock_irq(&bfqd->lock);

#endif



	blk_stat_disable_accounting(bfqd->queue);

	wbt_enable_default(bfqd->queue);



	kfree(bfqd);
@@ -7192,6 +7193,8 @@ static int bfq_init_queue(struct request_queue *q, struct elevator_type *e) 
	blk_queue_flag_set(QUEUE_FLAG_SQ_SCHED, q);



	wbt_disable_default(q);

	blk_stat_enable_accounting(q);



	return 0;



out_free: