From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752829AbaGQC6t (ORCPT ); Wed, 16 Jul 2014 22:58:49 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:48431 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750994AbaGQC6p (ORCPT ); Wed, 16 Jul 2014 22:58:45 -0400 Message-ID: <53C73BA3.1070303@oracle.com> Date: Wed, 16 Jul 2014 22:57:39 -0400 From: Sasha Levin User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 MIME-Version: 1.0 To: "Paul E. McKenney" , linux-kernel@vger.kernel.org CC: mingo@kernel.org, laijs@cn.fujitsu.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, niv@us.ibm.com, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, dvhart@linux.intel.com, fweisbec@gmail.com, oleg@redhat.com, sbw@mit.edu, linux-rt-users@vger.kernel.org Subject: Re: [PATCH RFC tip/core/rcu 1/2] rcu: Rationalize kthread spawning References: <20140714100604.GA9905@linux.vnet.ibm.com> <1405332404-10094-1-git-send-email-paulmck@linux.vnet.ibm.com> In-Reply-To: <1405332404-10094-1-git-send-email-paulmck@linux.vnet.ibm.com> X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Source-IP: acsinet21.oracle.com [141.146.126.237] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/14/2014 06:06 AM, Paul E. McKenney wrote: > From: "Paul E. McKenney" > > Currently, RCU spawns kthreads from several different early_initcall() > functions. Although this has served RCU well for quite some time, > as more kthreads are added a more deterministic approach is required. > This commit therefore causes all of RCU's early-boot kthreads to be > spawned from a single early_initcall() function. > > Signed-off-by: Paul E. McKenney Hey Paul, I've updated to today's -next and my VM started hanging on boot. Bisect pointed out this patch. I don't have any further info right now, but can provide whatever you'll find useful. Thanks, Sasha