linux-kernel - Re: [PATCH 4/9] net: openvswitch: use this_cpu

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Message-ID: <0000013ae10817d9-c5215352-348f-4898-b618-bb89e8725ab1-000000@email.amazonses.com>
Date:	Thu, 8 Nov 2012 17:18:55 +0000
From:	Christoph Lameter <cl@...ux.com>
To:	Shan Wei <shanwei88@...il.com>
cc:	jesse@...ira.com, dev@...nvswitch.org,
	NetDev <netdev@...r.kernel.org>,
	Kernel-Maillist <linux-kernel@...r.kernel.org>,
	David Miller <davem@...emloft.net>
Subject: Re: [PATCH 4/9] net: openvswitch: use this_cpu_ptr per-cpu helper

On Thu, 8 Nov 2012, Shan Wei wrote:

> Christoph Lameter said, at 2012/11/3 1:46:
> >>  		u64_stats_update_begin(&stats->sync);
> >>  		stats->tx_packets++;
> >
> > Use this_cpu_inc(vport->percpu_stats->packets) here?
>
> Lots of network drivers use u64_stats_sync infrastructure for statistics

So they would all have an advantage from the patch.

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