DTOT
DRAW_ROW(n, TOT_START, 6, "%*u", DTOT(v_timer)); /* timer */
DRAW_ROW(n, TOT_START, 8, "%*u", DTOT(v_ipi)); /* ipi */
DRAW_ROW(n, TOT_START, 8, "%*u", DTOT(v_intr)); /* extint */
DRAW_ROWX(n, TOT_START, 8, "%7u", DTOT(v_lock_colls));
(double)DTOT(v_lock_colls) / 1000000.0);