netdev - Re: [PATCH net-next 08/11] openvswitch: Per cpu flow stats.

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Message-Id: <20131029.221125.343749464995759893.davem@davemloft.net>
Date:	Tue, 29 Oct 2013 22:11:25 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	jesse@...ira.com
Cc:	netdev@...r.kernel.org, dev@...nvswitch.org, pshelar@...ira.com
Subject: Re: [PATCH net-next 08/11] openvswitch: Per cpu flow stats.

From: Jesse Gross <jesse@...ira.com>
Date: Tue, 29 Oct 2013 17:22:21 -0700

> From: Pravin B Shelar <pshelar@...ira.com>
> 
> With mega flow implementation ovs flow can be shared between
> multiple CPUs which makes stats updates highly contended
> operation. Following patch allocates separate stats for each
> CPU to make stats update scalable.
> 
> Signed-off-by: Pravin B Shelar <pshelar@...ira.com>
> Signed-off-by: Jesse Gross <jesse@...ira.com>

Please properly use __percpu memory for this.

Using arrays for this is very strongly discouraged, please instead
use the kernel facility designed exactly for this.
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