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

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Date:	Sun, 5 Dec 2010 22:40:32 +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 10:30 PM, jamal <hadi@...erus.ca> wrote:
> On Sun, 2010-12-05 at 09:13 +0800, Changli Gao wrote:
>
>> BTW: My ultimate goal is making ifb a multi-queue NIC, and the number
>> of queues is equal to the number of the possible CPUs.
>
>
> My view is this is going to be tricky because:
> - 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 see any point in having a separate softIRQ
> - and if you do use other mechanisms it would require a lot more
> testing since there are quiet a few use cases of ifb
>

I keep using tasklet. The attachment is the alpha version.

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

View attachment "ifb.c" of type "text/x-csrc" (7698 bytes)