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| author |   Ming Lei <ming.lei@redhat.com> | 2018-12-17 09:46:00 +0800 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2018-12-16 19:53:47 -0700 |
| commit | cc56694f132a8f5fa9334e3afe990de8c3378866 (patch) | |
| tree | c67715ced5609fdcd34e95c3dcc24e6bc8ae494a /include/linux/blkdev.h | |
| parent | block: update sysfs documentation (diff) | |
| download | linux-dev-cc56694f132a8f5fa9334e3afe990de8c3378866.tar.xz linux-dev-cc56694f132a8f5fa9334e3afe990de8c3378866.zip | |
blk-mq-debugfs: support rq_qos
blk-mq-debugfs has been proved as very helpful for debug some
tough issues, such as IO hang.
We have seen blk-wbt related IO hang several times, even inside
Red Hat BZ, there is such report not sovled yet, so this patch
adds support debugfs on rq_qos.
Cc: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Omar Sandoval <osandov@fb.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 81f1b105946b..45552e6eae1e 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -560,6 +560,7 @@ struct request_queue { #ifdef CONFIG_BLK_DEBUG_FS struct dentry *debugfs_dir; struct dentry *sched_debugfs_dir; + struct dentry *rqos_debugfs_dir; #endif bool mq_sysfs_init_done; |