tag	line	file	source code
blank_screen	1400	drivers/char/console.c	timer_table[BLANK_TIMER].fn = blank_screen;
blank_screen	1559	drivers/char/console.c	timer_table[BLANK_TIMER].fn = blank_screen;
blank_screen	415	drivers/char/tty_io.c	blank_screen();
blank_screen	201	drivers/char/vt.c	blank_screen();
blank_screen	440	include/linux/tty.h	extern void blank_screen(void);