tag	line	file	source code
UART_TX	397	drivers/char/serial.c	serial_outp(info, UART_TX, info->x_char);
UART_TX	402	drivers/char/serial.c	serial_outp(info, UART_TX, queue->buf[tail++]);
UART_TX	1009	drivers/char/serial.c	serial_outp(info, UART_TX, info->x_char);
UART_TX	1019	drivers/char/serial.c	serial_outp(info, UART_TX, queue->buf[tail++]);