tag	line	file	source code
TTY_THROTTLE_SQ_AVAIL	681	kernel/chr_drv/tty_io.c	tty->throttle(tty, TTY_THROTTLE_SQ_AVAIL);
TTY_THROTTLE_SQ_AVAIL	785	kernel/chr_drv/tty_io.c	tty->throttle(tty, TTY_THROTTLE_SQ_AVAIL);