ACPICPU_FLAG_P_XPSS
if ((sc->sc_flags & ACPICPU_FLAG_P_XPSS) == 0)
ps->ps_flags |= ACPICPU_FLAG_P_XPSS;
if ((sc->sc_flags & ACPICPU_FLAG_P_XPSS) != 0) {
if ((sc->sc_flags & ACPICPU_FLAG_P_XPSS) != 0) {
sc->sc_flags |= ACPICPU_FLAG_P_XPSS;