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Date: Wed, 14 Jan 2009 14:13:11 +0000
From: Jarek Poplawski <jarkao2@gmail.com>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Denys Fedoryschenko <denys@visp.net.lb>, Chris Caputo <ccaputo@alt.net>,
       netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
       Badalian Vyacheslav <slavon@bigtelecom.ru>,
       Thomas Gleixner <tglx@linutronix.de>
Subject: Re: deadlocks if use htb
Message-ID: <20090114141311.GA6643@ff.dom.local>
References: <20081010090426.GA6054@ff.dom.local> <200901141417.58667.denys@visp.net.lb> <1231937404.14825.4.camel@laptop> <200901141505.46929.denys@visp.net.lb> <20090114131257.GC6117@ff.dom.local> <1231938929.14825.6.camel@laptop> <20090114132603.GD6117@ff.dom.local> <1231939946.14825.9.camel@laptop>
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On Wed, Jan 14, 2009 at 02:32:26PM +0100, Peter Zijlstra wrote:
> On Wed, 2009-01-14 at 13:26 +0000, Jarek Poplawski wrote:
> 
> > OK, I hope Denys can apply more, but what about others? Without any
> > patches the hole seems to be much bigger.
> 
> OK, I read most of this thread on netdev, but didn't find a clear clue
> on the specific hrtimer insertion race.

There is something at the beginning of this thread, plus earlier
threads mostly with Denys as sender, and "htb bug" in the subject.

> 
> Do you have any clear ideas or should I poke at the htb/hrtimer code a
> little?
> 

...And htb code is htb_dequeue(): qdisc_watchdog_schedule().

Jarek P.
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