From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-io0-f197.google.com (mail-io0-f197.google.com [209.85.223.197]) by kanga.kvack.org (Postfix) with ESMTP id 3DC6D6B0069 for ; Thu, 1 Dec 2016 13:49:56 -0500 (EST) Received: by mail-io0-f197.google.com with SMTP id r101so27705561ioi.3 for ; Thu, 01 Dec 2016 10:49:56 -0800 (PST) Received: from merlin.infradead.org (merlin.infradead.org. [2001:4978:20e::2]) by mx.google.com with ESMTPS id s75si1227849ios.102.2016.12.01.10.49.55 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 01 Dec 2016 10:49:55 -0800 (PST) Date: Thu, 1 Dec 2016 19:49:47 +0100 From: Peter Zijlstra Subject: Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` Message-ID: <20161201184947.GR3045@worktop.programming.kicks-ass.net> References: <20161130163820.GQ3092@twins.programming.kicks-ass.net> <20161130170557.GK18432@dhcp22.suse.cz> <20161130175015.GR3092@twins.programming.kicks-ass.net> <20161130194019.GF3924@linux.vnet.ibm.com> <20161201053035.GC3092@twins.programming.kicks-ass.net> <20161201124024.GB3924@linux.vnet.ibm.com> <20161201163614.GL3092@twins.programming.kicks-ass.net> <20161201165918.GG3924@linux.vnet.ibm.com> <20161201180953.GO3045@worktop.programming.kicks-ass.net> <20161201184252.GP3924@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20161201184252.GP3924@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: "Paul E. McKenney" Cc: Michal Hocko , Donald Buczek , Paul Menzel , dvteam@molgen.mpg.de, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Josh Triplett On Thu, Dec 01, 2016 at 10:42:52AM -0800, Paul E. McKenney wrote: > On Thu, Dec 01, 2016 at 07:09:53PM +0100, Peter Zijlstra wrote: > > Thing is, I'm slightly uncomfortable with de-coupling rcu-sched from > > actual schedule() calls. > > OK, what is the source of your discomfort? Good question; after a little thought its not much different from other cases. So let me ponder this a bit more.. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org