tag	line	file	source code
UART_TX	393	drivers/char/serial.c	serial_outp(info, UART_TX, info->x_char);
UART_TX	398	drivers/char/serial.c	serial_outp(info, UART_TX, queue->buf[tail++]);
UART_TX	1004	drivers/char/serial.c	serial_outp(info, UART_TX, info->x_char);
UART_TX	1014	drivers/char/serial.c	serial_outp(info, UART_TX, queue->buf[tail++]);