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=-10.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 077C5C5B57D for ; Fri, 5 Jul 2019 04:16:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C747D21852 for ; Fri, 5 Jul 2019 04:16:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="irbfu9qA" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725926AbfGEEQ3 (ORCPT ); Fri, 5 Jul 2019 00:16:29 -0400 Received: from mail-pl1-f196.google.com ([209.85.214.196]:36645 "EHLO mail-pl1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725280AbfGEEQ3 (ORCPT ); Fri, 5 Jul 2019 00:16:29 -0400 Received: by mail-pl1-f196.google.com with SMTP id k8so3970836plt.3 for ; Thu, 04 Jul 2019 21:16:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=DIVzl05bCmHqAQSTOF3kZ/Ym5AufpX9dq9JbDFqM6xA=; b=irbfu9qArbablvA6nbNLTjhMKotjU5R09Zqx9DqYYzjYZz6fd5+MPt/5WZbfkukptH ModvZovWGiIEr+b3EIj5ZiICW7ImUrh3nRwJTahq1LWKcCom1ky/dNd/YJtqmVepFxZ8 7AsjoiTxjhRx2Aj53GHp3t5fLh2hoojsAcpKPqb0LR381CH/haWPEyvmmHBz2cAivW99 WVXDORQ9Wr97G+nOp9RqBFcimlQK4ne9s+s2+ZgyW2brfU8QICXkVIuoj+gkRZdHXC3l ZmGrtQLaXCzMowk6ehabqxUsVefUs7+VLbWuol4DwWq9rU1zsWApq87yWvwdSTmkzzeM C6nw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=DIVzl05bCmHqAQSTOF3kZ/Ym5AufpX9dq9JbDFqM6xA=; b=IQIctZBsMjgqPoiU7jHN7/8ac3zJlDAe/wVGvfQj0F/woTjsbh/v89Lw0aOlM4YHcw LxpYFN5oVoLZ4X/2im6s00IFwbEK1rKvqO8gmEK3vx7AilMl+wNk753EFVZIdczqYXUm 4YHexrS0uc3ADG//2xcNUcqFau9KsZ7hfwFQklwxyr1Ruy0MVFTtupFB+9Jzi0yzv04t npU1qAgXaoUiX8CChOhtF/vK9isg3nQRHMAzXu9SMHDUvFBP43OmyTXc8PVmprHDL/wt oHqqCzqrEGa+6VKbRvr4tmcrQdT1d1Ebp2aLC+FvCdNk/2sadgNXogsnqDQhuJZsQl/j Yvjw== X-Gm-Message-State: APjAAAXiSU2uSb7Vwyns9ba85AbOv5ak5TbtTA+yzmIiM0ucLGnrZgsW IZHSr7CoCt7tTaQm4TBUpA== X-Google-Smtp-Source: APXvYqzI9ZcBsR33Wj69OYxhz8Fl3uU52XOagYXuFn3y1+rHU7l+0to8zenOnZia6VzGeJ1Wmt9bLQ== X-Received: by 2002:a17:902:f204:: with SMTP id gn4mr2206522plb.3.1562300188420; Thu, 04 Jul 2019 21:16:28 -0700 (PDT) Received: from mylaptop.redhat.com ([2408:8207:7821:9e80:eaf2:5f81:4c66:c3d0]) by smtp.gmail.com with ESMTPSA id l68sm16328638pjb.8.2019.07.04.21.16.13 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 04 Jul 2019 21:16:27 -0700 (PDT) From: Pingfan Liu To: x86@kernel.org Cc: Pingfan Liu , Michal Hocko , Dave Hansen , Mike Rapoport , Tony Luck , Andy Lutomirski , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Andrew Morton , Vlastimil Babka , Oscar Salvador , Pavel Tatashin , Mel Gorman , Benjamin Herrenschmidt , Michael Ellerman , Stephen Rothwell , Qian Cai , Barret Rhoden , Bjorn Helgaas , David Rientjes , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/2] x86/numa: carve node online semantics out of alloc_node_data() Date: Fri, 5 Jul 2019 12:15:42 +0800 Message-Id: <1562300143-11671-1-git-send-email-kernelfans@gmail.com> X-Mailer: git-send-email 2.7.5 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Node online means either memory online or cpu online. But there is requirement to instance a pglist_data, which has neither cpu nor memory online (refer to [2/2]). So carve out the online semantics, and call node_set_online() where either memory or cpu is online. Signed-off-by: Pingfan Liu Cc: Michal Hocko Cc: Dave Hansen Cc: Mike Rapoport Cc: Tony Luck Cc: Andy Lutomirski Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: "H. Peter Anvin" Cc: Andrew Morton Cc: Michal Hocko Cc: Vlastimil Babka Cc: Oscar Salvador Cc: Pavel Tatashin Cc: Mel Gorman Cc: Benjamin Herrenschmidt Cc: Michael Ellerman Cc: Stephen Rothwell Cc: Qian Cai Cc: Barret Rhoden Cc: Bjorn Helgaas Cc: David Rientjes Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org --- arch/x86/mm/numa.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c index e6dad60..b48d507 100644 --- a/arch/x86/mm/numa.c +++ b/arch/x86/mm/numa.c @@ -213,8 +213,6 @@ static void __init alloc_node_data(int nid) node_data[nid] = nd; memset(NODE_DATA(nid), 0, sizeof(pg_data_t)); - - node_set_online(nid); } /** @@ -589,6 +587,7 @@ static int __init numa_register_memblks(struct numa_meminfo *mi) continue; alloc_node_data(nid); + node_set_online(nid); } /* Dump memblock with node info and return. */ @@ -760,8 +759,10 @@ void __init init_cpu_to_node(void) if (node == NUMA_NO_NODE) continue; - if (!node_online(node)) + if (!node_online(node)) { init_memory_less_node(node); + node_set_online(nid); + } numa_set_node(cpu, node); } -- 2.7.5