linux-kernel - Re: [PATCH v3] timer: implement lockdep deadlock detection

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Message-Id: <1233137581.10992.44.camel@laptop>
Date:	Wed, 28 Jan 2009 11:13:01 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Johannes Berg <johannes@...solutions.net>
Cc:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	Linux Kernel list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3] timer: implement lockdep deadlock detection

On Wed, 2009-01-28 at 10:54 +0100, Johannes Berg wrote:
> On Wed, 2009-01-28 at 09:20 +0100, Peter Zijlstra wrote:
> > On Tue, 2009-01-27 at 19:57 +0100, Johannes Berg wrote:
> > > This modifies the timer code in a way to allow lockdep to detect
> > > deadlocks resulting from a lock being taken in the timer function
> > > as well as around the del_timer_sync() call.
> > > 
> > > Signed-off-by: Johannes Berg <johannes@...solutions.net>
> > 
> > Nice, thanks!
> 
> I actually got "trying to register non-static key" on my powerpc64
> machine. Is there a possibility that functions are not static??

Hmm, weird, afaict static_obj() includes both text and data, for the
core kernel as well as modules.

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