Symbol: EXTPROC
drivers/tty/n_tty.c
1778
if (!old || (old->c_lflag ^ tty->termios.c_lflag) & (ICANON | EXTPROC)) {
drivers/tty/pty.c
246
int extproc = (old_termios->c_lflag & EXTPROC) | L_EXTPROC(tty);
include/linux/tty.h
115
#define L_EXTPROC(tty) _L_FLAG((tty), EXTPROC)