tag	line	file	source code
TTY_THROTTLE_RQ_FULL	241	kernel/chr_drv/serial.c	rs_throttle(info->tty, TTY_THROTTLE_RQ_FULL);
TTY_THROTTLE_RQ_FULL	747	kernel/chr_drv/serial.c	case TTY_THROTTLE_RQ_FULL: