tag	line	file	source code
UART_TX	391	drivers/char/serial.c	serial_outp(info, UART_TX, info->x_char);
UART_TX	396	drivers/char/serial.c	serial_outp(info, UART_TX, queue->buf[tail++]);
UART_TX	1003	drivers/char/serial.c	serial_outp(info, UART_TX, info->x_char);
UART_TX	1013	drivers/char/serial.c	serial_outp(info, UART_TX, queue->buf[tail++]);