From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Hemminger <shemminger-ZtmgI6mnKB3QT0dZR+AlfA@public.gmane.org>
Subject: Re: [PATCH net-next 4/4] net: Add Open vSwitch kernel
	components.
Date: Fri, 18 Nov 2011 15:23:34 -0800
Message-ID: <20111118152334.2c2a9761@nehalam.linuxnetplumber.net>
References: <1321657938-21761-1-git-send-email-jesse@nicira.com>
	<1321657938-21761-5-git-send-email-jesse@nicira.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Cc: dev-yBygre7rU0TnMu66kgdUjQ@public.gmane.org, netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	"David S. Miller" <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
To: Jesse Gross <jesse-l0M0P4e3n4LQT0dZR+AlfA@public.gmane.org>
Return-path: <dev-bounces-yBygre7rU0TnMu66kgdUjQ@public.gmane.org>
In-Reply-To: <1321657938-21761-5-git-send-email-jesse-l0M0P4e3n4LQT0dZR+AlfA@public.gmane.org>
List-Unsubscribe: <http://openvswitch.org/mailman/options/dev>,
	<mailto:dev-request-yBygre7rU0TnMu66kgdUjQ@public.gmane.org?subject=unsubscribe>
List-Archive: <http://openvswitch.org/pipermail/dev>
List-Post: <mailto:dev-yBygre7rU0TnMu66kgdUjQ@public.gmane.org>
List-Help: <mailto:dev-request-yBygre7rU0TnMu66kgdUjQ@public.gmane.org?subject=help>
List-Subscribe: <http://openvswitch.org/mailman/listinfo/dev>,
	<mailto:dev-request-yBygre7rU0TnMu66kgdUjQ@public.gmane.org?subject=subscribe>
Sender: dev-bounces-yBygre7rU0TnMu66kgdUjQ@public.gmane.org
Errors-To: dev-bounces-yBygre7rU0TnMu66kgdUjQ@public.gmane.org
List-Id: netdev.vger.kernel.org

On Fri, 18 Nov 2011 15:12:18 -0800
Jesse Gross <jesse-l0M0P4e3n4LQT0dZR+AlfA@public.gmane.org> wrote:

> +		write_seqcount_begin(&stats->seqlock);
> +		stats->tx_packets++;
> +		stats->tx_bytes += sent;
> +		write_seqcount_end(&stats->seqlock);

There is a u64_stats_sync set of macros for this. It has the
advantage of becoming a NOP on 64 bit platforms.