From: Eric Dumazet <edumazet@google.com>
Date: Sun, 5 Oct 2014 09:35:14 +0000 (+0300)
Subject: net/mlx4_en: Use prefetch in tx path
X-Git-Tag: fixes-against-v3.18-rc2~144^2~30^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=29d40c903247;p=pandora-kernel.git

net/mlx4_en: Use prefetch in tx path

mlx4_en_free_tx_desc() uses a prefetchw(&skb->users) to speed up
consume_skb()
prefetchw(&ring->tx_queue->dql) to speed up BQL update

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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