aleph/lkl_linux
1
0
Fork 0
mirror of https://github.com/lkl/linux.git synced 2025-12-19 08:03:01 +09:00
Code Issues Packages Projects Releases Wiki Activity

blk-mq: split out tag initialization, support shared tags

Browse Source 
Add a new blk_mq_tag_set structure that gets set up before we initialize
the queue.  A single blk_mq_tag_set structure can be shared by multiple
queues.

Signed-off-by: Christoph Hellwig <hch@lst.de>

Modular export of blk_mq_{alloc,free}_tagset added by me.

Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Christoph Hellwig
2014-04-15 14:14:00 -06:00
committed by Jens Axboe
parent ed44832dea
commit 24d2f90309
8 changed files with 260 additions and 198 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
block/blk-mq-cpumap.c
View File

@@ -80,17 +80,17 @@ int blk_mq_update_queue_map(unsigned int *map, unsigned int nr_queues)
return 0;
}
unsigned int *blk_mq_make_queue_map(struct blk_mq_reg *reg)
unsigned int *blk_mq_make_queue_map(struct blk_mq_tag_set *set)
{
unsigned int *map;
/* If cpus are offline, map them to first hctx */
map = kzalloc_node(sizeof(*map) * num_possible_cpus(), GFP_KERNEL,
reg->numa_node);
set->numa_node);
if (!map)
return NULL;
if (!blk_mq_update_queue_map(map, reg->nr_hw_queues))
if (!blk_mq_update_queue_map(map, set->nr_hw_queues))
return map;
kfree(map);