netdev - Re: [PATCH] Re: iproute2 / tbf with large burst seems broken again

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Message-Id: <20090901.155145.97691775.davem@davemloft.net>
Date:	Tue, 01 Sep 2009 15:51:45 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jarkao2@...il.com
Cc:	denys@...p.net.lb, netdev@...r.kernel.org
Subject: Re: [PATCH] Re: iproute2 / tbf with large burst seems broken again

From: Jarek Poplawski <jarkao2@...il.com>
Date: Mon, 31 Aug 2009 08:58:49 +0000

> On Mon, Aug 31, 2009 at 01:37:38AM -0700, David Miller wrote:
>> From: Denys Fedoryschenko <denys@...p.net.lb>
>> Date: Mon, 31 Aug 2009 11:18:42 +0300
>> 
>> > 2.6.31-rc8 i got dmesg flooded. First message appearing even without patch, i 
>> > will make sure now what is a reason of that (i have HTB classes on ifb0, and 
>> > TBF on pppX).
>> > 
>> > [  155.199923] Attempt to kill tasklet from interrupt
>> 
>> We know the reasons for this message, it's an HTB regression and we're
>> working on it.
> 
> There is a few more than HTB. Btw, IMHO, we don't risk much (if at
> all) if we revert this qdisc_watchdog change. There is still CBQ
> problem, where we could probably reconsider Thomas Gleixner's first
> attempt with additional locking and irq disabling as a temporary
> solution?

As I stated in another email, I think my plan is going to be to
revert both tasklet_hrtimer changes and try to deal with this in
net-next-2.6 instead.
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