update_rlimit_cpu
int update_rlimit_cpu(struct task_struct *task, unsigned long rlim_new);
update_rlimit_cpu(tsk->group_leader, new_rlim->rlim_cur);
(void) update_rlimit_cpu(current->group_leader,
update_rlimit_cpu(current, rlimit(RLIMIT_CPU));