xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

blk-mq-debugfs: support rq_qos

Browse Source 
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>
This commit is contained in:
Ming Lei
2018-12-17 09:46:00 +08:00
committed by Jens Axboe
parent f9824952ee
commit cc56694f13
5 changed files with 98 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
include/linux/blkdev.h
View File

@@ -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;