netdev - Re: [PATCH 3/3] ifb: move tq from ifb

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Date:	Sun, 5 Dec 2010 23:22:27 +0800
From:	Changli Gao <xiaosuo@...il.com>
To:	hadi@...erus.ca
Cc:	Jarek Poplawski <jarkao2@...il.com>, netdev@...r.kernel.org
Subject: Re: [PATCH 3/3] ifb: move tq from ifb_private

On Sun, Dec 5, 2010 at 11:13 PM, jamal <hadi@...erus.ca> wrote:
> On Sun, 2010-12-05 at 22:40 +0800, Changli Gao wrote:
>> On Sun, Dec 5, 2010 at 10:30 PM, jamal <hadi@...erus.ca> wrote:
>
>> > - we use tasklets. When we  reschedule we can end up on a differrent
>> > cpu.
>>
>> The tasklets always been scheduled to the current CPU unless it has
>> been schedule already on the other CPU.
>
> I dont think this can be guaranteed - So the potential of packet
> reordering exists.
>

The current implementation can guarantee it. However, I can't find
documentation about this 'feature', but I think this behavior should
not be changed in future since maybe some call sites relay on it.


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