netdev - Re: [PATCH RFC net-next] ip_tunnel: create percpu gro

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Message-ID: <20150112183316.GG3842288@devbig242.prn2.facebook.com>
Date:	Mon, 12 Jan 2015 10:33:16 -0800
From:	Martin Lau <kafai@...com>
To:	Eric Dumazet <eric.dumazet@...il.com>
CC:	<netdev@...r.kernel.org>, <kernel-team@...com>
Subject: Re: [PATCH RFC net-next] ip_tunnel: create percpu gro_cell

On Fri, Jan 09, 2015 at 05:02:39PM -0800, Eric Dumazet wrote:
> On Fri, 2015-01-09 at 15:17 -0800, Martin Lau wrote:
> > Is the spin_lock() still needed?
> 
> Think about cpu hotplug, we can have interesting things here.
> 
> Basically no cost at all once mem is percpu.
Thanks, will post a v2.

--Martin
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