linux-kernel - Re: 2.6.18-git21, possible recursive locking in kseriod ends up in DWARF2 unwinder stuck

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Date:	Fri, 13 Oct 2006 08:12:34 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Jiri Kosina <jikos@...os.cz>,
	Alessandro Suardi <alessandro.suardi@...il.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.18-git21, possible recursive locking in kseriod ends up in DWARF2 unwinder stuck


* Dmitry Torokhov <dmitry.torokhov@...il.com> wrote:

> >#define lockdep_set_subclass(lock, subclass) \
> > ({ static struct lock_key_class __key; \
> >    lockdep_init_map(&(lock)->dep_map, concat(lock, subclass), \
> >                     &__key, subclass); })
> 
> That leaves unneeded __key (another one was already created by 
> mutex_init...) but it tucked away nicely in the define so it is fine 
> by me.
> 
> Ingo, do you want to send these changes on or you want me to push them 
> through my tree?

could you send that commit to Andrew? It looks good to me, and the 
unavailability of the lockdep_set_subclass() API upstream is hindering 
Jiri now.

	Ingo
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