tag	line	file	source code
WAKEUP_CHARS	1309	drivers/char/console.c	if (LEFT(&tty->write_q) > WAKEUP_CHARS)
WAKEUP_CHARS	79	drivers/char/pty.c	if (LEFT(fq) > WAKEUP_CHARS)
WAKEUP_CHARS	400	drivers/char/serial.c	if (VLEFT > WAKEUP_CHARS) {