From ee056f98126170ca8b16b9a4a6e20aae7c5c184e Mon Sep 17 00:00:00 2001 From: Omar Sandoval Date: Wed, 5 Apr 2017 12:01:34 -0700 Subject: blk-mq-sched: provide hooks for initializing hardware queue data Schedulers need to be informed when a hardware queue is added or removed at runtime so they can allocate/free per-hardware queue data. So, replace the blk_mq_sched_init_hctx_data() helper, which only makes sense at init time, with .init_hctx() and .exit_hctx() hooks. Signed-off-by: Omar Sandoval Signed-off-by: Jens Axboe --- include/linux/elevator.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/elevator.h b/include/linux/elevator.h index 22d39e8d4de1..b7ec315ee7e7 100644 --- a/include/linux/elevator.h +++ b/include/linux/elevator.h @@ -93,6 +93,8 @@ struct blk_mq_hw_ctx; struct elevator_mq_ops { int (*init_sched)(struct request_queue *, struct elevator_type *); void (*exit_sched)(struct elevator_queue *); + int (*init_hctx)(struct blk_mq_hw_ctx *, unsigned int); + void (*exit_hctx)(struct blk_mq_hw_ctx *, unsigned int); bool (*allow_merge)(struct request_queue *, struct request *, struct bio *); bool (*bio_merge)(struct blk_mq_hw_ctx *, struct bio *); -- cgit v1.2.3-70-g09d2