diff options
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 cd50a2f8733e5..3573199b298bc 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); |