ktime_get_real 2772 include/linux/skbuff.h skb->tstamp = ktime_get_real(); ktime_get_real 2777 include/linux/skbuff.h return ktime_sub(ktime_get_real(), t); ktime_get_real 154 include/linux/timekeeping.h return ktime_to_ns(ktime_get_real());