sched_group_set_rt_period 7653 kernel/sched/core.c 	return sched_group_set_rt_period(css_tg(css), rt_period_us);
sched_group_set_rt_period  464 kernel/sched/sched.h extern int sched_group_set_rt_period(struct task_group *tg, u64 rt_period_us);