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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <alpine.DEB.2.00.1209200753450.3801@utopia.booyaka.com>
Date:	Thu, 20 Sep 2012 07:56:03 +0000 (UTC)
From:	Paul Walmsley <paul@...an.com>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
cc:	"Paul E. McKenney" <paul.mckenney@...aro.org>,
	linux-kernel@...r.kernel.org, bbruce@...com,
	linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	khilman@...com, santosh.shilimkar@...com, jon-hunter@...com,
	snijsure@...d-net.com
Subject: Re: rcu self-detected stall messages on OMAP3, 4 boards

Hi,

On Wed, 19 Sep 2012, Paul E. McKenney wrote:

> On Thu, Sep 13, 2012 at 06:52:10PM +0000, Paul Walmsley wrote:
> 
> > On Wed, 12 Sep 2012, Paul E. McKenney wrote:
>  
> > > Subodh Nijsure (also CCed) reported something that might be similar on
> > > ARM, and also reported that setting the following got rid of the stalls:
> > > 
> > > 	CONFIG_CPU_IDLE=y
> > > 	CONFIG_CPU_IDLE_GOV_LADDER=y
> > > 	CONFIG_CPU_IDLE_GOV_MENU=y
> > > 
> > > At which point he was happy, which was good, but which also left the
> > > underlying problem unsolved.  Do these affect your system?  If so,
> > > do they cause a different ARM idle loop to be executed?
> > 
> > Will give this a try.  What board was Subodh using?
> 
> Any news on trying the above settings?

Sorry, haven't had the chance to try it yet due to the impending merge 
window opening.  Once things settle down I'll give it a try -- or maybe 
someone else can test it in the meantime.


- Paul
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/