From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf0-f69.google.com (mail-lf0-f69.google.com [209.85.215.69]) by kanga.kvack.org (Postfix) with ESMTP id 4F9866B0261 for ; Mon, 28 Nov 2016 09:40:52 -0500 (EST) Received: by mail-lf0-f69.google.com with SMTP id o20so55184989lfg.2 for ; Mon, 28 Nov 2016 06:40:52 -0800 (PST) Received: from mail.setcomm.ru (mail.setcomm.ru. [2a00:1248:5004:5::3]) by mx.google.com with ESMTP id o94si27040504lfg.22.2016.11.28.06.40.50 for ; Mon, 28 Nov 2016 06:40:50 -0800 (PST) Reply-To: bb@kernelpanic.ru Subject: Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` 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> From: Boris Zhmurov Message-ID: Date: Mon, 28 Nov 2016 17:40:48 +0300 MIME-Version: 1.0 In-Reply-To: <20161128143435.GC3924@linux.vnet.ibm.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: paulmck@linux.vnet.ibm.com Cc: Michal Hocko , Paul Menzel , Donald Buczek , linux-mm@kvack.org 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. -- Boris Zhmurov System/Network Administrator mailto: bb@kernelpanic.ru "wget http://kernelpanic.ru/bb_public_key.pgp -O - | gpg --import" -- 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