PMU_F_ENABLED
if (!cpuhw || (cpuhw->flags & PMU_F_ENABLED))
cpuhw->flags |= PMU_F_ENABLED;
if (!cpuhw || !(cpuhw->flags & PMU_F_ENABLED))
cpuhw->flags &= ~PMU_F_ENABLED;
cpuhw->flags |= PMU_F_ENABLED;
if (!(cpuhw->flags & PMU_F_ENABLED))
cpuhw->flags &= ~PMU_F_ENABLED;