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| author | Omar Sandoval <osandov@fb.com> | 2017-05-04 08:24:40 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-05-04 08:24:40 -0600 |
| commit | d332ce091813d11a46144354baa72b755833392f (patch) | |
| tree | c6f567b7ffea6dc4abf66cd49e2f94d7a9a49410 /include/linux | |
| parent | 9c1051aacde828073dbbab5e8e59c0fc802efa9a (diff) | |
| download | lwn-d332ce091813d11a46144354baa72b755833392f.tar.gz lwn-d332ce091813d11a46144354baa72b755833392f.zip | |
blk-mq-debugfs: allow schedulers to register debugfs attributes
This provides the infrastructure for schedulers to expose their internal
state through debugfs. We add a list of queue attributes and a list of
hctx attributes to struct elevator_type and wire them up when switching
schedulers.
Signed-off-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Add missing seq_file.h header in blk-mq-debugfs.h
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/blk-mq.h | 1 | ||||
| -rw-r--r-- | include/linux/blkdev.h | 1 | ||||
| -rw-r--r-- | include/linux/elevator.h | 7 |
3 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index de8ed9aaa156..c47aa248c640 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -60,6 +60,7 @@ struct blk_mq_hw_ctx { #ifdef CONFIG_BLK_DEBUG_FS struct dentry *debugfs_dir; + struct dentry *sched_debugfs_dir; #endif }; diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index b49a79a29e58..80ae958717a1 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -579,6 +579,7 @@ struct request_queue { #ifdef CONFIG_BLK_DEBUG_FS struct dentry *debugfs_dir; + struct dentry *sched_debugfs_dir; #endif bool mq_sysfs_init_done; diff --git a/include/linux/elevator.h b/include/linux/elevator.h index d44840368ee7..9ec5e22846e0 100644 --- a/include/linux/elevator.h +++ b/include/linux/elevator.h @@ -8,6 +8,9 @@ struct io_cq; struct elevator_type; +#ifdef CONFIG_BLK_DEBUG_FS +struct blk_mq_debugfs_attr; +#endif /* * Return values from elevator merger @@ -144,6 +147,10 @@ struct elevator_type char elevator_name[ELV_NAME_MAX]; struct module *elevator_owner; bool uses_mq; +#ifdef CONFIG_BLK_DEBUG_FS + const struct blk_mq_debugfs_attr *queue_debugfs_attrs; + const struct blk_mq_debugfs_attr *hctx_debugfs_attrs; +#endif /* managed by elevator core */ char icq_cache_name[ELV_NAME_MAX + 5]; /* elvname + "_io_cq" */ |