From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=MAILING_LIST_MULTI autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by aws-us-west-2-korg-lkml-1.web.codeaurora.org (Postfix) with ESMTP id 01A18C5CFF1 for ; Tue, 12 Jun 2018 15:21:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AB832208B2 for ; Tue, 12 Jun 2018 15:21:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AB832208B2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754376AbeFLPVB (ORCPT ); Tue, 12 Jun 2018 11:21:01 -0400 Received: from mx2.suse.de ([195.135.220.15]:48819 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754196AbeFLPVA (ORCPT ); Tue, 12 Jun 2018 11:21:00 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext-too.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id D454AABE6; Tue, 12 Jun 2018 15:20:58 +0000 (UTC) Date: Tue, 12 Jun 2018 17:20:57 +0200 From: Michal Hocko To: Punit Agrawal Cc: Bjorn Helgaas , Xie XiuQi , Hanjun Guo , tnowicki@caviumnetworks.com, linux-pci@vger.kernel.org, Catalin Marinas , "Rafael J. Wysocki" , Will Deacon , Linux Kernel Mailing List , Jarkko Sakkinen , linux-mm@kvack.org, wanghuiqiang@huawei.com, Greg Kroah-Hartman , Bjorn Helgaas , Andrew Morton , zhongjiang , linux-arm Subject: Re: [PATCH 1/2] arm64: avoid alloc memory on offline node Message-ID: <20180612152057.GA13364@dhcp22.suse.cz> References: <20180607105514.GA13139@dhcp22.suse.cz> <5ed798a0-6c9c-086e-e5e8-906f593ca33e@huawei.com> <20180607122152.GP32433@dhcp22.suse.cz> <20180611085237.GI13364@dhcp22.suse.cz> <16c4db2f-bc70-d0f2-fb38-341d9117ff66@huawei.com> <20180611134303.GC75679@bhelgaas-glaptop.roam.corp.google.com> <20180611145330.GO13364@dhcp22.suse.cz> <87lgbk59gs.fsf@e105922-lin.cambridge.arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87lgbk59gs.fsf@e105922-lin.cambridge.arm.com> User-Agent: Mutt/1.9.5 (2018-04-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue 12-06-18 16:08:03, Punit Agrawal wrote: > Michal Hocko writes: [...] > > Well, the standard way to handle memory less NUMA nodes is to simply > > fallback to the closest NUMA node. We even have an API for that > > (numa_mem_id). > > CONFIG_HAVE_MEMORYLESS node is not enabled on arm64 which means we end > up returning the original node in the fallback path. Yes this makes more sense. -- Michal Hocko SUSE Labs