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blk-mq: export blk_mq_map_queues

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This will allow SCSI to have a single blk_mq_ops structure that either
lets the LLDD map the queues to PCIe MSIx vectors or use the default.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Christoph Hellwig 2016-11-01 08:12:47 -06:00 • committed by Martin K. Petersen
parent 69d72ac836
commit 9e5a7e2295
3 changed files with 2 additions and 1 deletions
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1
block/blk-mq-cpumap.c
View file

@ -87,6 +87,7 @@ int blk_mq_map_queues(struct blk_mq_tag_set *set)
free_cpumask_var(cpus); free_cpumask_var(cpus);
return 0; return 0;
} }
EXPORT_SYMBOL_GPL(blk_mq_map_queues);
/* /*
* We have no quick way of doing reverse lookups. This is only used at * We have no quick way of doing reverse lookups. This is only used at

1
block/blk-mq.h
View file

@ -38,7 +38,6 @@ void blk_mq_disable_hotplug(void);
/* /*
* CPU -> queue mappings * CPU -> queue mappings
*/ */
int blk_mq_map_queues(struct blk_mq_tag_set *set);
extern int blk_mq_hw_queue_to_node(unsigned int *map, unsigned int); extern int blk_mq_hw_queue_to_node(unsigned int *map, unsigned int);
static inline struct blk_mq_hw_ctx *blk_mq_map_queue(struct request_queue *q, static inline struct blk_mq_hw_ctx *blk_mq_map_queue(struct request_queue *q,

1
include/linux/blk-mq.h
View file

@ -237,6 +237,7 @@ void blk_mq_unfreeze_queue(struct request_queue *q);
void blk_mq_freeze_queue_start(struct request_queue *q); void blk_mq_freeze_queue_start(struct request_queue *q);
int blk_mq_reinit_tagset(struct blk_mq_tag_set *set); int blk_mq_reinit_tagset(struct blk_mq_tag_set *set);
int blk_mq_map_queues(struct blk_mq_tag_set *set);
void blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, int nr_hw_queues); void blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, int nr_hw_queues);
/* /*