From: Olaf Hering <olaf@aepfle.de>
To: Arnd Bergmann <arnd@arndb.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: acquire_console_mutex: WARNING: at 2.6.33.4-rt20/kernel/mutex-debug.c:65 mutex_remove_waiter+0xe8/0x11c()
Date: Wed, 2 Jun 2010 11:13:01 +0200 [thread overview]
Message-ID: <20100602091301.GA9242@aepfle.de> (raw)
In-Reply-To: <201005311329.07182.arnd@arndb.de>
On Mon, May 31, Arnd Bergmann wrote:
> On Sunday 30 May 2010, Olaf Hering wrote:
> > > You could try to pull in the blk/tty branch from
> > > http://git.kernel.org/?p=linux/kernel/git/arnd/playground.git and enable
> > > CONFIG_TTY_MUTEX to see if that gives you better lockdep output,
> > > because that replaces the implicit dropping of the BKL with mutex operations
> > > that lockdep is aware of.
> >
> > CONFIG_TTY_MUTEX depends on SMP and this ARM system does not support
> > CONFIG_SMP, its hidden by Kconfig dependencies.
Arnd,
I do not have access to this ARM board anymore, and other systems I own
do not have hardware for serial console.
So I can not test or debug this further.
Olaf
prev parent reply other threads:[~2010-06-02 9:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-24 22:53 acquire_console_mutex: WARNING: at 2.6.33.4-rt20/kernel/mutex-debug.c:65 mutex_remove_waiter+0xe8/0x11c() Olaf Hering
2010-05-25 11:18 ` Arnd Bergmann
2010-05-30 21:39 ` Olaf Hering
2010-05-31 11:29 ` Arnd Bergmann
2010-06-02 9:13 ` Olaf Hering [this message]
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