PMU_F_IN_USE
cpuhw->flags &= ~PMU_F_IN_USE;
cpuhw->flags |= PMU_F_IN_USE;
if (cpuhw->flags & PMU_F_IN_USE)
cpuhw->flags |= PMU_F_IN_USE;
cpuhw->flags &= ~PMU_F_IN_USE;
if (cpuhw->flags & PMU_F_IN_USE) {
if (cpuhw->flags != (PMU_F_IN_USE | PMU_F_RESERVED))