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authorMichal Hocko <mhocko@suse.cz>2013-04-29 15:07:21 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-29 15:54:33 -0700
commit6d2488f64a240191f0733c1f32d73607916b01b7 (patch)
tree8e83c602ae560623ee9a8fc2959ce8d61e52eb03 /kernel/cgroup.c
parent16248d8fe65ea116cc30b915e05a1c29496da120 (diff)
downloadlinaro-lsk-6d2488f64a240191f0733c1f32d73607916b01b7.tar.gz
cgroup: remove css_get_next
Now that we have generic and well ordered cgroup tree walkers there is no need to keep css_get_next in the place. Signed-off-by: Michal Hocko <mhocko@suse.cz> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: Li Zefan <lizefan@huawei.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Ying Han <yinghan@google.com> Cc: Tejun Heo <htejun@gmail.com> Cc: Glauber Costa <glommer@parallels.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/cgroup.c')
-rw-r--r--kernel/cgroup.c49
1 files changed, 0 insertions, 49 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index a32f9432666..dfaf50d4705 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -5416,55 +5416,6 @@ struct cgroup_subsys_state *css_lookup(struct cgroup_subsys *ss, int id)
}
EXPORT_SYMBOL_GPL(css_lookup);
-/**
- * css_get_next - lookup next cgroup under specified hierarchy.
- * @ss: pointer to subsystem
- * @id: current position of iteration.
- * @root: pointer to css. search tree under this.
- * @foundid: position of found object.
- *
- * Search next css under the specified hierarchy of rootid. Calling under
- * rcu_read_lock() is necessary. Returns NULL if it reaches the end.
- */
-struct cgroup_subsys_state *
-css_get_next(struct cgroup_subsys *ss, int id,
- struct cgroup_subsys_state *root, int *foundid)
-{
- struct cgroup_subsys_state *ret = NULL;
- struct css_id *tmp;
- int tmpid;
- int rootid = css_id(root);
- int depth = css_depth(root);
-
- if (!rootid)
- return NULL;
-
- BUG_ON(!ss->use_id);
- WARN_ON_ONCE(!rcu_read_lock_held());
-
- /* fill start point for scan */
- tmpid = id;
- while (1) {
- /*
- * scan next entry from bitmap(tree), tmpid is updated after
- * idr_get_next().
- */
- tmp = idr_get_next(&ss->idr, &tmpid);
- if (!tmp)
- break;
- if (tmp->depth >= depth && tmp->stack[depth] == rootid) {
- ret = rcu_dereference(tmp->css);
- if (ret) {
- *foundid = tmpid;
- break;
- }
- }
- /* continue to scan from next id */
- tmpid = tmpid + 1;
- }
- return ret;
-}
-
/*
* get corresponding css from file open on cgroupfs directory
*/