diff options
| author |   Shaohua Li <shli@fb.com> | 2017-07-12 11:49:55 -0700 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2017-07-29 09:00:03 -0600 |
| commit | 69fd5c391763bd94a40dd152bc72a7f230137150 (patch) | |
| tree | 9f44111556c0f8ac14410703a79c42289ea768c2 /include/linux/kernfs.h | |
| parent | block: always attach cgroup info into bio (diff) | |
| download | linux-dev-69fd5c391763bd94a40dd152bc72a7f230137150.tar.xz linux-dev-69fd5c391763bd94a40dd152bc72a7f230137150.zip | |
blktrace: add an option to allow displaying cgroup path
By default we output cgroup id in blktrace. This adds an option to
display cgroup path. Since get cgroup path is a relativly heavy
operation, we don't enable it by default.
with the option enabled, blktrace will output something like this:
dd-1353 [007] d..2 293.015252: 8,0 /test/level D R 24 + 8 [dd]
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/kernfs.h')
| -rw-r--r-- | include/linux/kernfs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h index d149361e5875..ab25c8b6d9e3 100644 --- a/include/linux/kernfs.h +++ b/include/linux/kernfs.h @@ -358,6 +358,8 @@ struct super_block *kernfs_pin_sb(struct kernfs_root *root, const void *ns); void kernfs_init(void); +struct kernfs_node *kernfs_get_node_by_id(struct kernfs_root *root, + const union kernfs_node_id *id); #else /* CONFIG_KERNFS */ static inline enum kernfs_node_type kernfs_type(struct kernfs_node *kn) |