From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f198.google.com (mail-pf0-f198.google.com [209.85.192.198]) by kanga.kvack.org (Postfix) with ESMTP id 9C6826B0253 for ; Mon, 28 Nov 2016 10:05:17 -0500 (EST) Received: by mail-pf0-f198.google.com with SMTP id a8so215339931pfg.0 for ; Mon, 28 Nov 2016 07:05:17 -0800 (PST) Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com. [148.163.156.1]) by mx.google.com with ESMTPS id q17si55459136pgh.96.2016.11.28.07.05.16 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 28 Nov 2016 07:05:16 -0800 (PST) Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id uASF3wpA139036 for ; Mon, 28 Nov 2016 10:05:15 -0500 Received: from e32.co.us.ibm.com (e32.co.us.ibm.com [32.97.110.150]) by mx0a-001b2d01.pphosted.com with ESMTP id 270ns459em-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Mon, 28 Nov 2016 10:05:14 -0500 Received: from localhost by e32.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 28 Nov 2016 08:05:12 -0700 Date: Mon, 28 Nov 2016 07:05:09 -0800 From: "Paul E. McKenney" Subject: Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` Reply-To: paulmck@linux.vnet.ibm.com References: <20161124133019.GE3612@linux.vnet.ibm.com> <20161125212000.GI31360@linux.vnet.ibm.com> <20161128095825.GI14788@dhcp22.suse.cz> <20161128105425.GY31360@linux.vnet.ibm.com> <3a4242cb-0198-0a3b-97ae-536fb5ff83ec@kernelpanic.ru> <20161128143435.GC3924@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Message-Id: <20161128150509.GG3924@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: Boris Zhmurov Cc: Michal Hocko , Paul Menzel , Donald Buczek , linux-mm@kvack.org On Mon, Nov 28, 2016 at 05:40:48PM +0300, Boris Zhmurov wrote: > Paul E. McKenney 28/11/16 17:34: > > > >> So Paul, I've dropped "mm: Prevent shrink_node_memcg() RCU CPU stall > >> warnings" patch, and stalls got back (attached). > >> > >> With this patch "commit 7cebc6b63bf75db48cb19a94564c39294fd40959" from > >> your tree stalls gone. Looks like that. > > > > So with only this commit and no other commit or configuration adjustment, > > everything works? Or it the solution this commit and some other stuff? > > > > The reason I ask is that if just this commit does the trick, I should > > drop the others. > > I'd like to ask for some more time to make sure this is it. > Approximately 2 or 3 days. Works for me! Thanx, Paul -- 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