tag	line	file	source code
LATCH	571	kernel/sched.c	outb_p(LATCH & 0xff , 0x40);  /* LSB */
LATCH	572	kernel/sched.c	outb(LATCH >> 8 , 0x40);  /* MSB */
LATCH	718	kernel/sys.c	if (count < (LATCH - LATCH/100))
LATCH	731	kernel/sys.c	+ ((LATCH - 1) - count)*(1000000/HZ)/LATCH;