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authorJens Axboe <axboe@fb.com>2017-01-11 14:29:56 -0700
committerJens Axboe <axboe@fb.com>2017-01-17 10:04:04 -0700
commitcc71a6f43886a8af57dbbce2a45b4b2aaf570fe6 (patch)
tree5b30ee132c63f90ec3cf1efb21e90f66524b3317 /block/blk-mq.h
parent4941115bef2bc891aa00a2f0edeaf06dc982325a (diff)
downloadlinux-cc71a6f43886a8af57dbbce2a45b4b2aaf570fe6.tar.bz2
blk-mq: abstract out helpers for allocating/freeing tag maps
Prep patch for adding an extra tag map for scheduler requests. Signed-off-by: Jens Axboe <axboe@fb.com> Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Omar Sandoval <osandov@fb.com>
Diffstat (limited to 'block/blk-mq.h')
-rw-r--r--block/blk-mq.h14
1 files changed, 9 insertions, 5 deletions
diff --git a/block/blk-mq.h b/block/blk-mq.h
index 48b7771eb192..1b279b02d0f6 100644
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -37,17 +37,21 @@ void blk_mq_flush_busy_ctxs(struct blk_mq_hw_ctx *hctx, struct list_head *list);
/*
* Internal helpers for allocating/freeing the request map
*/
-void blk_mq_free_rq_map(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
- unsigned int hctx_idx);
-struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set,
- unsigned int hctx_idx);
+void blk_mq_free_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
+ unsigned int hctx_idx);
+void blk_mq_free_rq_map(struct blk_mq_tags *tags);
+struct blk_mq_tags *blk_mq_alloc_rq_map(struct blk_mq_tag_set *set,
+ unsigned int hctx_idx,
+ unsigned int nr_tags,
+ unsigned int reserved_tags);
+int blk_mq_alloc_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
+ unsigned int hctx_idx, unsigned int depth);
/*
* Internal helpers for request insertion into sw queues
*/
void __blk_mq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
bool at_head);
-
/*
* CPU hotplug helpers
*/