From: Brice Goglin <brice@myri.com>
Date: Thu, 16 Apr 2009 02:23:56 +0000 (+0000)
Subject: myri10ge: force stats update in ethtool gstats
X-Git-Tag: v2.6.31-rc1~330^2~614
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=590818250684d18bb0e30c45d79971dcdff96ad0;p=pandora-kernel.git

myri10ge: force stats update in ethtool gstats

Force a statistics update when our ethtool gstats routine
is called.  Otherwise, ethtool will continue to read stale
stats until something forces an update by reading /proc/net/dev

This requires putting a lock around the stats update to guard
against 2 threads (one via ethtool, and one via procfs)
updating the stats at once.

Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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