netdev - Re: [PATCH net-next] r8169: Add 64bit statistics

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Message-ID: <CABoNC82RO2uvn9TfToAygEspUZnNrefXgO6SGpZoSAayCp3QiA@mail.gmail.com>
Date:	Thu, 17 Nov 2011 15:46:53 +0800
From:	Junchang Wang <junchangwang@...il.com>
To:	Stephen Hemminger <stephen.hemminger@...tta.com>
Cc:	netdev@...r.kernel.org, romieu@...zoreil.com,
	nic swsd <nic_swsd@...ltek.com>,
	eric dumazet <eric.dumazet@...il.com>
Subject: Re: [PATCH net-next] r8169: Add 64bit statistics

> You dont need per-cpu since Tx is locked by dev->xmit_lock and
> rx is implicitly single threaded by NAPI.

Thanks.

>You do need to have
> two u64_stat_sync entries (one for Tx and one for Rx).

You mean Rx and Tx will perform on different cores at one moment.
So I need a sync for Tx to protect tx_xxx, and another for Rx to
protect rx_xxx. Is that right?

Thanks.

-- 
--Junchang
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