From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf0-f70.google.com (mail-lf0-f70.google.com [209.85.215.70]) by kanga.kvack.org (Postfix) with ESMTP id 1A36B6B0038 for ; Wed, 30 Nov 2016 13:12:57 -0500 (EST) Received: by mail-lf0-f70.google.com with SMTP id g12so45397637lfe.5 for ; Wed, 30 Nov 2016 10:12:57 -0800 (PST) Received: from mail.setcomm.ru (mail.setcomm.ru. [2a00:1248:5004:5::3]) by mx.google.com with ESMTP id v72si20143941lfa.287.2016.11.30.10.12.55 for ; Wed, 30 Nov 2016 10:12:55 -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> <20161128150509.GG3924@linux.vnet.ibm.com> <66fd50e1-a922-846a-f427-7654795bd4b5@kernelpanic.ru> <20161130174802.GM18432@dhcp22.suse.cz> From: Boris Zhmurov Message-ID: Date: Wed, 30 Nov 2016 21:12:52 +0300 MIME-Version: 1.0 In-Reply-To: <20161130174802.GM18432@dhcp22.suse.cz> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko Cc: paulmck@linux.vnet.ibm.com, Paul Menzel , Donald Buczek , linux-mm@kvack.org Michal Hocko 30/11/16 20:48: >> Well, after some testing I may say, that your patch: >> ---------------------8<----------------------------------- >> commit 7cebc6b63bf75db48cb19a94564c39294fd40959 >> Author: Paul E. McKenney >> Date: Fri Nov 25 12:48:10 2016 -0800 >> >> mm: Prevent shrink_node_memcg() RCU CPU stall warnings >> ---------------------8<----------------------------------- >> >> fixes stall warning and dmesg is clean now. > > Do I get it right that s@cond_resched_rcu_qs@cond_resched@ didn't help? I didn't try that. I've tried 4 patches from Paul's linux-rcu tree. I can try another portion of patches, no problem :) -- 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