linux-kernel - Re: [PATCH RT 4/8] rtmutex: use a trylock for waiter lock in trylock

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Date:	Thu, 16 Jan 2014 23:22:28 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Mike Galbraith <bitbucket@...ine.de>
Cc:	linux-kernel@...r.kernel.org,
	linux-rt-users <linux-rt-users@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Carsten Emde <C.Emde@...dl.org>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	John Kacur <jkacur@...hat.com>
Subject: Re: [PATCH RT 4/8] rtmutex: use a trylock for waiter lock in
 trylock

On Thu, 16 Jan 2014 04:08:57 +0100
Mike Galbraith <bitbucket@...ine.de> wrote:

> On Wed, 2014-01-15 at 20:58 -0500, Steven Rostedt wrote:
> 
> 
> > 3.2.53-rt76-rc1 stable review patch.
> > If anyone has any objections, please let me know.
> 
> Not sure this is needed without the tglx don't unconditionally raise
> timer softirq patch, and with that patch applied in the form it exists
> in 3.12-rt9, as well as this one, you'll still eventually deadlock.

Hmm, I'll have to take a look. This sounds to be missing from all the
stable -rt kernels. I'll be pulling in the latest updates from 3.12-rt
soon.

Thanks,

-- Steve

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