SUB_64
SUB_64(estats->s##_hi, qstats_old->s##_hi_old, \
SUB_64(fstats->s##_hi, qstats_old->s##_hi, \
SUB_64(estats->s##_hi, estats_old->t##_hi, \
SUB_64(m_hi, 0, m_lo, s); \