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| 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.c | |
| 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.c')
| -rw-r--r-- | block/blk-cgroup.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 0426ab692fd5..6bc99a3865b0 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -33,6 +33,10 @@ void blkiocg_add_blkio_group(struct blkio_cgroup *blkcg, blkg->blkcg_id = css_id(&blkcg->css); hlist_add_head_rcu(&blkg->blkcg_node, &blkcg->blkg_list); spin_unlock_irqrestore(&blkcg->lock, flags); +#ifdef CONFIG_DEBUG_BLK_CGROUP + /* Need to take css reference ? */ + cgroup_path(blkcg->css.cgroup, blkg->path, sizeof(blkg->path)); +#endif } static void __blkiocg_del_blkio_group(struct blkio_group *blkg) |