linux-kernel - Re: [patch 1/3] rtmutex: Add missing deadlock check

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Message-ID: <alpine.DEB.2.02.1405140840140.6261@ionos.tec.linutronix.de>
Date:	Wed, 14 May 2014 08:42:20 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Steven Rostedt <rostedt@...dmis.org>
cc:	paulmck@...ux.vnet.ibm.com, Peter Zijlstra <peterz@...radead.org>,
	Lai Jiangshan <laijs@...fujitsu.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Dave Jones <davej@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Darren Hart <darren@...art.com>,
	Davidlohr Bueso <davidlohr@...com>,
	Ingo Molnar <mingo@...nel.org>,
	Clark Williams <williams@...hat.com>,
	Roland McGrath <roland@...k.frob.com>,
	Carlos ODonell <carlos@...hat.com>,
	Jakub Jelinek <jakub@...hat.com>,
	Michael Kerrisk <mtk.manpages@...il.com>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: Re: [patch 1/3] rtmutex: Add missing deadlock check

On Tue, 13 May 2014, Steven Rostedt wrote:

> On Tue, 13 May 2014 15:00:09 -0700
> "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> wrote:
> 
>  
> > Good points -- I was indeed thinking about stress testing instead of
> > algorithmic testing.
> 
> But doesn't lockdep use algorithmic tests too?

Kinda, but only for the deadlock detection.

I'm not sure if we want to inflict PI correctness and set_scheduler()
interaction to lockdep.

Thanks,

	tglx
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