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| author | Omar Sandoval <osandov@fb.com> | 2017-01-25 08:06:40 -0800 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-01-27 08:17:44 -0700 |
| commit | 07e4fead45e6e1932f0b960655ab554b6aab6a08 (patch) | |
| tree | 3e3a021a6232494e0492862660b2856368d7a196 /block/blk-mq.c | |
| parent | b48fda0976a802e0fe4fc0bedefb7cf380ec6426 (diff) | |
| download | op-kernel-dev-07e4fead45e6e1932f0b960655ab554b6aab6a08.zip op-kernel-dev-07e4fead45e6e1932f0b960655ab554b6aab6a08.tar.gz | |
blk-mq: create debugfs directory tree
In preparation for putting blk-mq debugging information in debugfs,
create a directory tree mirroring the one in sysfs:
# tree -d /sys/kernel/debug/block
/sys/kernel/debug/block
|-- nvme0n1
| `-- mq
| |-- 0
| | `-- cpu0
| |-- 1
| | `-- cpu1
| |-- 2
| | `-- cpu2
| `-- 3
| `-- cpu3
`-- vda
`-- mq
`-- 0
|-- cpu0
|-- cpu1
|-- cpu2
`-- cpu3
Also add the scaffolding for the actual files that will go in here,
either under the hardware queue or software queue directories.
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-mq.c')
| -rw-r--r-- | block/blk-mq.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 84d13b5..ede835c 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -2799,6 +2799,8 @@ void blk_mq_enable_hotplug(void) static int __init blk_mq_init(void) { + blk_mq_debugfs_init(); + cpuhp_setup_state_multi(CPUHP_BLK_MQ_DEAD, "block/mq:dead", NULL, blk_mq_hctx_notify_dead); |
