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blk-mq: ensure that hardware queues are always run on the mapped CPUs

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Instead of providing soft mappings with no guarantees on hardware
queues always being run on the right CPU, switch to a hard mapping
guarantee that ensure that we always run the hardware queue on
(one of, if more) the mapped CPU.

Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Jens Axboe 2014-04-09 10:18:23 -06:00
parent 8ab14595b6
commit e4043dcf30
2 changed files with 52 additions and 15 deletions
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include/linux/blk-mq.h
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@ -19,6 +19,7 @@ struct blk_mq_hw_ctx {
unsigned long state; /* BLK_MQ_S_* flags */
struct delayed_work delayed_work;
cpumask_var_t cpumask;
unsigned long flags; /* BLK_MQ_F_* flags */