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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 33F43C10DCE for ; Wed, 18 Mar 2020 19:20:43 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 0DC4D2072C for ; Wed, 18 Mar 2020 19:20:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0DC4D2072C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 978096B007D; Wed, 18 Mar 2020 15:20:42 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 9280B6B007E; Wed, 18 Mar 2020 15:20:42 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 83DB56B0080; Wed, 18 Mar 2020 15:20:42 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0192.hostedemail.com [216.40.44.192]) by kanga.kvack.org (Postfix) with ESMTP id 67B676B007D for ; Wed, 18 Mar 2020 15:20:42 -0400 (EDT) Received: from smtpin22.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 233C7349B for ; Wed, 18 Mar 2020 19:20:42 +0000 (UTC) X-FDA: 76609449924.22.spade28_233058bb7da57 X-HE-Tag: spade28_233058bb7da57 X-Filterd-Recvd-Size: 2036 Received: from gentwo.org (gentwo.org [3.19.106.255]) by imf42.hostedemail.com (Postfix) with ESMTP for ; Wed, 18 Mar 2020 19:20:41 +0000 (UTC) Received: by gentwo.org (Postfix, from userid 1002) id 5CF353EF51; Wed, 18 Mar 2020 19:20:41 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by gentwo.org (Postfix) with ESMTP id 5AC813EF50; Wed, 18 Mar 2020 19:20:41 +0000 (UTC) Date: Wed, 18 Mar 2020 19:20:41 +0000 (UTC) From: Christopher Lameter X-X-Sender: cl@www.lameter.com To: Srikar Dronamraju cc: Andrew Morton , linux-mm@kvack.org, Mel Gorman , Michael Ellerman , Sachin Sant , Michal Hocko , linuxppc-dev@lists.ozlabs.org, Joonsoo Kim , Kirill Tkhai , Vlastimil Babka , Bharata B Rao , Nathan Lynch Subject: Re: [PATCH v2 3/4] mm: Implement reset_numa_mem In-Reply-To: <20200318072810.9735-4-srikar@linux.vnet.ibm.com> Message-ID: References: <20200318072810.9735-1-srikar@linux.vnet.ibm.com> <20200318072810.9735-4-srikar@linux.vnet.ibm.com> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, 18 Mar 2020, Srikar Dronamraju wrote: > For a memoryless or offline nodes, node_numa_mem refers to a N_MEMORY > fallback node. Currently kernel has an API set_numa_mem that sets > node_numa_mem for memoryless node. However this API cannot be used for > offline nodes. Hence all offline nodes will have their node_numa_mem set > to 0. However systems can themselves have node 0 as offline i.e That is a significant change to the basic assumptions for memory less nodes. Node 0 needed to have memory and processors. Not sure what else may break.