tag	line	file	source code
ECHOCTL	146	include/linux/tty.h	#define L_ECHOCTL(tty)  _L_FLAG((tty),ECHOCTL)
ECHOCTL	1094	kernel/chr_drv/tty_io.c	ECHOCTL | ECHOKE;
ECHOCTL	1104	kernel/chr_drv/tty_io.c	ECHOCTL | ECHOKE;