linux-kernel - Re: RCU idle CPU detection is broken in linux-next

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Message-ID: <20120925183654.GI2502@linux.vnet.ibm.com>
Date:	Tue, 25 Sep 2012 11:36:54 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Sasha Levin <levinsasha928@...il.com>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Michael Wang <wangyun@...ux.vnet.ibm.com>,
	Dave Jones <davej@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: RCU idle CPU detection is broken in linux-next

On Tue, Sep 25, 2012 at 08:28:23PM +0200, Sasha Levin wrote:
> On 09/25/2012 02:06 PM, Frederic Weisbecker wrote:
> > Sasha, sorry to burden you with more testing request.
> > Could you please try out this new branch? It includes some fixes after Wu Fenguang and
> > Dan Carpenter reports (not related to your warnings though) and a patch on the top
> > of the pile to ensure I diagnosed well the problem, which return immediately from
> > rcu_user_*() APIs if we are in an interrupt.
> > 
> > This way we'll have a clearer view. I also would like to know if there are other
> > problems with the rcu user mode.
> > 
> > Thanks!
> 
> Alrighty, I don't see any warnings anymore.
> 
> I'll keep everything running just in case.

Very good news!!!  Thank you both!!!

							Thanx, Paul

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