ktime_sub         260 include/linux/hrtimer.h 	return ktime_sub(timer->node.expires, timer->base->get_time());
ktime_sub         373 include/linux/hrtimer.h 	delta = ktime_to_ns(ktime_sub(hard, soft));
ktime_sub         186 include/linux/ktime.h        return ktime_to_us(ktime_sub(later, earlier));
ktime_sub        2777 include/linux/skbuff.h 	return ktime_sub(ktime_get_real(), t);