From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Thu, 16 Sep 2010 02:58:13 +0000 (+0000)
Subject: net: shrinks struct net_device
X-Git-Tag: v2.6.37-rc1~147^2~419
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cd13539b8bc9ae884e6d8d9374c594adff4304e4;p=pandora-kernel.git

net: shrinks struct net_device

commit ab95bfe01 (net: replace hooks in __netif_receive_skb) added
rx_handler at wrong place, between two cache line aligned objects,
creating a big hole (a full cache line)

Move rx_handler and rx_handler_data before rx_queue, filling existing
hole.

Move master field in the cache line(s) used in receive path.

This saves 64 bytes (or L1_CACHE_BYTES), and avoids two possible
cache misses in receive path.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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