lkml.org 
[lkml]   [2002]   [Jan]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: hires timestamps for netif_rx()
From
   From: Wilson Yeung <wilson@whack.org>
Date: Wed, 16 Jan 2002 17:03:58 -0800 (PST)

The discreprency is that get_fast_time() returns the current value of
xtime, while do_gettimeofday() may actually calculate the time and
consider both xtime and the jiffies.

Look at the x86 implementation of do_fast_time, it equals
do_gettimeofday() when TSC is present which is the only time
that do_gettimeofday is going to be more accurate than xtime.

Franks a lot,
David S. Miller
davem@redhat.com
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:23    [W:0.158 / U:22.872 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site