From: Pravin B Shelar <pshelar@nicira.com>
Date: Wed, 30 Oct 2013 00:22:21 +0000 (-0700)
Subject: openvswitch: Per cpu flow stats.
X-Git-Tag: v3.14-rc1~94^2~265^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e298e5057006;p=pandora-kernel.git

openvswitch: Per cpu flow stats.

With mega flow implementation ovs flow can be shared between
multiple CPUs which makes stats updates highly contended
operation. This patch uses per-CPU stats in cases where a flow
is likely to be shared (if there is a wildcard in the 5-tuple
and therefore likely to be spread by RSS). In other situations,
it uses the current strategy, saving memory and allocation time.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
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