netdev - Re: [PATCH 4/5] ifb: add multiqueue support

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Message-ID: <AANLkTikGpX_nYZ4Ubg7ArRk=-YfkrTxeALX=JPv7o5h-@mail.gmail.com>
Date:	Tue, 14 Dec 2010 07:46:41 +0800
From:	Changli Gao <xiaosuo@...il.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Jamal Hadi Salim <hadi@...erus.ca>,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [PATCH 4/5] ifb: add multiqueue support

On Tue, Dec 14, 2010 at 1:05 AM, Eric Dumazet <eric.dumazet@...il.com> wrote:
>
>
> Hmm, this wont work with CPU HOTPLUG.
>
> When we put a cpu offline, we can transfert tasklets from this cpu to
> another 'online cpu'
>
> To solve this, you need that ri_tasklet() not use a "device pointer"
> parameter but a pointer to 'cpu' private data, since it can be different
> than the data of the current cpu.
>
> static void ri_tasklet(unsigned long arg)
> {
> struct ifb_q_private *qp = (struct ifb_q_private *)arg;
>
>        ...
> }
>

You are right, and it was my original way. Thanks.


-- 
Regards,
Changli Gao(xiaosuo@...il.com)
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