From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753482Ab2IYShH (ORCPT ); Tue, 25 Sep 2012 14:37:07 -0400 Received: from e9.ny.us.ibm.com ([32.97.182.139]:35504 "EHLO e9.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751521Ab2IYShF (ORCPT ); Tue, 25 Sep 2012 14:37:05 -0400 Date: Tue, 25 Sep 2012 11:36:54 -0700 From: "Paul E. McKenney" To: Sasha Levin Cc: Frederic Weisbecker , Michael Wang , Dave Jones , "linux-kernel@vger.kernel.org" Subject: Re: RCU idle CPU detection is broken in linux-next Message-ID: <20120925183654.GI2502@linux.vnet.ibm.com> Reply-To: paulmck@linux.vnet.ibm.com References: <20120922212735.GG2934@linux.vnet.ibm.com> <20120923002105.GA1112@linux.vnet.ibm.com> <505EA09B.6040105@gmail.com> <5060E31B.3070203@gmail.com> <5060E498.7030003@gmail.com> <5060E863.6020006@gmail.com> <20120925120549.GC2310@somewhere.redhat.com> <5061F7C7.7060107@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5061F7C7.7060107@gmail.com> User-Agent: Mutt/1.5.21 (2010-09-15) x-cbid: 12092518-7182-0000-0000-000002B0B620 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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