From: Roland Dreier <rolandd@cisco.com>
Date: Fri, 25 Jan 2008 22:15:34 +0000 (-0800)
Subject: IB/mlx4: Micro-optimize mlx4_ib_poll_one()
X-Git-Tag: v2.6.25-rc1~1234^2~47
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b3226184af6c13c9d5d38f13f0ef8e03f718bbf7;p=pandora-kernel.git

IB/mlx4: Micro-optimize mlx4_ib_poll_one()

Rather than byte-swapping cqe->g_mlpath_rqpn each time we extract a
field from it, byte-swap it once into a temporary variable.  This
results in smaller, better code -- eg, on 32-bit x86:

add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-5 (-5)
function                                     old     new   delta
mlx4_ib_poll_cq                             1188    1183      -5

Signed-off-by: Roland Dreier <rolandd@cisco.com>
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