CTL_PR_PREEMPT
persis_io.pr.pr_info.action = CTL_PR_PREEMPT;
persis_io.pr.pr_info.action = CTL_PR_PREEMPT;
persis_io.pr.pr_info.action = CTL_PR_PREEMPT;
persis_io.pr.pr_info.action = CTL_PR_PREEMPT;
case CTL_PR_PREEMPT: