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authorJens Axboe <axboe@fb.com>2014-05-30 08:25:36 -0600
committerJens Axboe <axboe@fb.com>2014-05-30 08:25:36 -0600
commit67aec14ce87fe25bdfff7dbf468556333df11c4e (patch)
tree85857d82abc91996bfdf054774f46e5aa519acec /block/blk-mq.h
parent2230237500821aedfcf2bba2a79d9cbca389233c (diff)
downloadlinux-67aec14ce87fe25bdfff7dbf468556333df11c4e.tar.bz2
blk-mq: make the sysfs mq/ layout reflect current mappings
Currently blk-mq registers all the hardware queues in sysfs, regardless of whether it uses them (e.g. they have CPU mappings) or not. The unused hardware queues lack the cpux/ directories, and the other sysfs entries (like active, pending, etc) are all zeroes. Change this so that sysfs correctly reflects the current mappings of the hardware queues. Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-mq.h')
-rw-r--r--block/blk-mq.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/block/blk-mq.h b/block/blk-mq.h
index ff5e6bf0f691..de7b3bbd5bd6 100644
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -55,6 +55,12 @@ extern int blk_mq_update_queue_map(unsigned int *map, unsigned int nr_queues);
extern int blk_mq_hw_queue_to_node(unsigned int *map, unsigned int);
/*
+ * sysfs helpers
+ */
+extern int blk_mq_sysfs_register(struct request_queue *q);
+extern void blk_mq_sysfs_unregister(struct request_queue *q);
+
+/*
* Basic implementation of sparser bitmap, allowing the user to spread
* the bits over more cachelines.
*/