diff options
| author | Vivek Goyal <vgoyal@redhat.com> | 2009-12-03 12:59:48 -0500 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-12-03 19:28:52 +0100 |
| commit | 2868ef7b39490e6b41c2c61cd9a5cd891e778b54 (patch) | |
| tree | e50e169e984d8bd201de2f73f98e31a65c028feb /block/blk-cgroup.h | |
| parent | b1c3576961847da26c91b1e97f226bb66be5fa3f (diff) | |
| download | lwn-2868ef7b39490e6b41c2c61cd9a5cd891e778b54.tar.gz lwn-2868ef7b39490e6b41c2c61cd9a5cd891e778b54.zip | |
blkio: Some debugging aids for CFQ
o Some debugging aids for CFQ.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block/blk-cgroup.h')
| -rw-r--r-- | block/blk-cgroup.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h index cd50a2f8733e..3573199b298b 100644 --- a/block/blk-cgroup.h +++ b/block/blk-cgroup.h @@ -27,12 +27,25 @@ struct blkio_group { void *key; struct hlist_node blkcg_node; unsigned short blkcg_id; +#ifdef CONFIG_DEBUG_BLK_CGROUP + /* Store cgroup path */ + char path[128]; +#endif }; #define BLKIO_WEIGHT_MIN 100 #define BLKIO_WEIGHT_MAX 1000 #define BLKIO_WEIGHT_DEFAULT 500 +#ifdef CONFIG_DEBUG_BLK_CGROUP +static inline char *blkg_path(struct blkio_group *blkg) +{ + return blkg->path; +} +#else +static inline char *blkg_path(struct blkio_group *blkg) { return NULL; } +#endif + #ifdef CONFIG_BLK_CGROUP extern struct blkio_cgroup blkio_root_cgroup; extern struct blkio_cgroup *cgroup_to_blkio_cgroup(struct cgroup *cgroup); |