linux-kernel - Re: rcu self-detected stall messages on OMAP3, 4 boards

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Message-ID: <alpine.DEB.2.00.1209212240190.31812@utopia.booyaka.com>
Date:	Fri, 21 Sep 2012 22:41:14 +0000 (UTC)
From:	Paul Walmsley <paul@...an.com>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
cc:	"Bruce, Becky" <bbruce@...com>,
	"Paul E. McKenney" <paul.mckenney@...aro.org>,
	"<linux-kernel@...r.kernel.org>" <linux-kernel@...r.kernel.org>,
	"<linux-omap@...r.kernel.org>" <linux-omap@...r.kernel.org>,
	"<linux-arm-kernel@...ts.infradead.org>" 
	<linux-arm-kernel@...ts.infradead.org>,
	"Hilman, Kevin" <khilman@...com>,
	"Shilimkar, Santosh" <santosh.shilimkar@...com>,
	"Hunter, Jon" <jon-hunter@...com>,
	"<snijsure@...d-net.com>" <snijsure@...d-net.com>
Subject: Re: rcu self-detected stall messages on OMAP3, 4 boards

On Fri, 21 Sep 2012, Paul E. McKenney wrote:

> On Fri, Sep 21, 2012 at 05:47:31PM +0000, Paul Walmsley wrote:
>
> > I built an OMAP kernel from Linus' commit 
> > 4651afbbae968772efd6dc4ba461cba9b49bb9d8 ("Merge branch 'for-3.6-fixes' of 
> > git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq").  The config used 
> > was 'omap2plus_defconfig', and enabled CONFIG_CPU_IDLE by hand.  Booted it 
> > on a Pandaboard (OMAP4430ES2) into a very minimal Debian rootfs.
> 
> Did you have the patch at https://lkml.org/lkml/2012/8/30/290 applied?

No, it's just as described above.

> If not, could you please try it?  (This patch cleared up a similar
> problem for Becky, also on OMAP.)

Did not seem to help, either with or without CONFIG_CPU_IDLE.


- Paul
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