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Date: Wed, 16 Jan 2002 17:08:52 -0800 (PST)
Message-Id: <20020116.170852.91311984.davem@redhat.com>
To: wilson@whack.org
Cc: linux-kernel@vger.kernel.org, linux-net@vger.kernel.org
Subject: Re: hires timestamps for netif_rx()
From: "David S. Miller" <davem@redhat.com>
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In-Reply-To: <20020116.161759.68040363.davem@redhat.com>
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   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
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