DC_LOG2BETA 308 drivers/misc/echo/echo.c ec->rx_1 += -(ec->rx_1 >> DC_LOG2BETA) + tmp - ec->rx_2; DC_LOG2BETA 572 drivers/misc/echo/echo.c ec->tx_1 += -(ec->tx_1 >> DC_LOG2BETA) + tmp - ec->tx_2;