netdev - Re: [PATCH] tunnels: Optimize tx path

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Date:	Mon, 05 Oct 2009 00:12:03 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH] tunnels: Optimize tx path

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Thu, 24 Sep 2009 09:43:58 +0200

> We currently dirty a cache line to update tunnel device stats
> (tx_packets/tx_bytes). We better use the txq->tx_bytes/tx_packets
> counters that already are present in cpu cache, in the cache
> line shared with txq->_xmit_lock
> 
> This patch extends IPTUNNEL_XMIT() macro to use txq pointer
> provided by the caller.
> 
> Also &tunnel->dev->stats can be replaced by &dev->stats
> 
> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>

Applied to net-next-2.6
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