netdev - Re: [PATCH net-next-2.6] ipv6 fib: Make rt6

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Message-Id: <20100401.184508.144448196.davem@davemloft.net>
Date:	Thu, 01 Apr 2010 18:45:08 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	yoshfuji@...ux-ipv6.org
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next-2.6] ipv6 fib: Make rt6_info{} more cache-line
 aware.

From: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
Date: Thu, 01 Apr 2010 17:24:22 +0900

> The head element of rt6_info{} is dst_entry{}, and
> IPv6 specific elements follow.
> 
> Because elements at the end of dst_entry{} are frequently
> updated, it is not good to put frequently-used static
> elements, such as rt6i_idev, rt6i_dst or rt6i_flags in the
> same cache line.
> 
> On the other hand, fib6_table, rt6i_node or rt6i_gateway are
> rarely used, so it is okay to stay in the same cache line.
> 
> Let's rearrange rt6_info{}.
> 
> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>

Applied.
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