From: Eric Dumazet <dada1@cosmosbay.com>
Date: Mon, 18 May 2009 00:35:38 +0000 (+0000)
Subject: vlan: use struct netdev_queue counters instead of dev->stats
X-Git-Tag: v2.6.31-rc1~330^2~382
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=450c4ea15ecb89567e6a75b89cbb8a598a7efb75;p=pandora-kernel.git

vlan: use struct netdev_queue counters instead of dev->stats

We can update netdev_queue tx_bytes/tx_packets/tx_dropped counters instead
of dev->stats ones, to reduce number of cache lines dirtied in xmit path.

This fixes a performance problem on SMP when many different cpus take
vlan tx path.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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