diff options
Diffstat (limited to 'kernel/cgroup.c')
| -rw-r--r-- | kernel/cgroup.c | 49 |
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 */ |