CLKF_INTR
if (CLKF_INTR(cf) || sched_curcpu_runnable_p() ||
if (CLKF_INTR((struct clockframe *)tf) || !curlwp) {
if (CLKF_INTR(frame) || (curlwp->l_pflag & LP_INTR) != 0) {