+#if defined(CONFIG_CGROUP_SCHED) && \
+ (defined(CONFIG_FAIR_GROUP_SCHED) || defined(CONFIG_RT_GROUP_SCHED))
+static void task_group_path(struct task_group *tg, char *buf, int buflen)
+{
+ /* may be NULL if the underlying cgroup isn't fully-created yet */
+ if (!tg->css.cgroup) {
+ buf[0] = '\0';
+ return;
+ }
+ cgroup_path(tg->css.cgroup, buf, buflen);
+}
+#endif
+