tag	line	file	source code
TTY_THROTTLE_RQ_AVAIL	757	kernel/chr_drv/serial.c	case TTY_THROTTLE_RQ_AVAIL:
TTY_THROTTLE_RQ_AVAIL	678	kernel/chr_drv/tty_io.c	tty->throttle(tty, TTY_THROTTLE_RQ_AVAIL);