diff options
| author | Omar Sandoval <osandov@fb.com> | 2017-04-05 12:01:34 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-04-07 12:45:41 -0600 |
| commit | ee056f98126170ca8b16b9a4a6e20aae7c5c184e (patch) | |
| tree | efccc4a63eeb010d8adaf27322745407df052f62 /include/linux | |
| parent | 65f619d2535197d97067eeeef75a40f25b552e69 (diff) | |
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 <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/elevator.h | 2 |
1 files changed, 2 insertions, 0 deletions
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 *); |