vt_waitactive 750 drivers/tty/vt/vt_ioctl.c ret = vt_waitactive(arg); vt_waitactive 1435 drivers/tty/vt/vt_ioctl.c if (vt_waitactive(vt + 1)) { vt_waitactive 131 include/linux/vt_kern.h int vt_waitactive(int n);