tty_perform_flush  431 drivers/tty/ipwireless/tty.c 			return tty_perform_flush(linux_tty, arg);
tty_perform_flush  892 drivers/tty/tty_ioctl.c EXPORT_SYMBOL_GPL(tty_perform_flush);
tty_perform_flush  558 include/linux/tty.h extern int tty_perform_flush(struct tty_struct *tty, unsigned long arg);