netdev - Re: [PATCH net-next-2.6] filter: use reciprocal divide

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Message-Id: <20101119.100726.48508760.davem@davemloft.net>
Date:	Fri, 19 Nov 2010 10:07:26 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	xiaosuo@...il.com
Cc:	eric.dumazet@...il.com, hagen@...u.net, netdev@...r.kernel.org
Subject: Re: [PATCH net-next-2.6] filter: use reciprocal divide

From: Changli Gao <xiaosuo@...il.com>
Date: Fri, 19 Nov 2010 16:18:05 +0800

> On Fri, Nov 19, 2010 at 4:04 PM, Eric Dumazet <eric.dumazet@...il.com> wrote:
>> At compile time, we can replace the DIV_K instruction (divide by a
>> constant value) by a reciprocal divide.
>>
>> At exec time, the expensive divide is replaced by a multiply, a less
>> expensive operation on most processors.
>>
>> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>
> 
> Acked-by: Changli Gao <xiaosuo@...il.com>

Applied.
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