From patchwork Thu Sep 16 08:42:42 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 12498271 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 27D5DC433EF for ; Thu, 16 Sep 2021 08:42:59 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id C24CD61186 for ; Thu, 16 Sep 2021 08:42:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org C24CD61186 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=glider.be Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 09B2C6B0073; Thu, 16 Sep 2021 04:42:56 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 001E2900002; Thu, 16 Sep 2021 04:42:55 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id AD61A6B0078; Thu, 16 Sep 2021 04:42:55 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0237.hostedemail.com [216.40.44.237]) by kanga.kvack.org (Postfix) with ESMTP id 92DC06B0072 for ; Thu, 16 Sep 2021 04:42:55 -0400 (EDT) Received: from smtpin36.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 467D71829CF59 for ; Thu, 16 Sep 2021 08:42:55 +0000 (UTC) X-FDA: 78592796310.36.A98E58C Received: from michel.telenet-ops.be (michel.telenet-ops.be [195.130.137.88]) by imf18.hostedemail.com (Postfix) with ESMTP id B331A400208D for ; Thu, 16 Sep 2021 08:42:54 +0000 (UTC) Received: from ramsan.of.borg ([IPv6:2a02:1810:ac12:ed20:39fa:3565:945d:98f4]) by michel.telenet-ops.be with bizsmtp id uYim2500T3mHZPk06YimpQ; Thu, 16 Sep 2021 10:42:53 +0200 Received: from rox.of.borg ([192.168.97.57]) by ramsan.of.borg with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1mQmyk-0053tq-0b; Thu, 16 Sep 2021 10:42:46 +0200 Received: from geert by rox.of.borg with local (Exim 4.93) (envelope-from ) id 1mQmyj-004q6g-CF; Thu, 16 Sep 2021 10:42:45 +0200 From: Geert Uytterhoeven To: Matt Fleming , Mel Gorman , Peter Zijlstra , Ingo Molnar , Juri Lelli , Vincent Guittot , Andrew Morton , Vlastimil Babka Cc: Yoshinori Sato , Rich Felker , Gon Solo , linux-mm@kvack.org, linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH 1/2] mm: Move node_reclaim_distance to fix NUMA without SMP Date: Thu, 16 Sep 2021 10:42:42 +0200 Message-Id: <6432666a648dde85635341e6c918cee97c97d264.1631781495.git.geert+renesas@glider.be> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: B331A400208D X-Stat-Signature: j7n7h6udgnqktozwjidnrdqi9z7gmone Authentication-Results: imf18.hostedemail.com; dkim=none; dmarc=none; spf=none (imf18.hostedemail.com: domain of geert@linux-m68k.org has no SPF policy when checking 195.130.137.88) smtp.mailfrom=geert@linux-m68k.org X-HE-Tag: 1631781774-853285 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: If CONFIG_NUMA=y, but CONFIG_SMP=n (e.g. sh/migor_defconfig): sh4-linux-gnu-ld: mm/page_alloc.o: in function `get_page_from_freelist': page_alloc.c:(.text+0x2c24): undefined reference to `node_reclaim_distance' Fix this by moving the declaration of node_reclaim_distance from an SMP-only to a generic file. Fixes: a55c7454a8c887b2 ("sched/topology: Improve load balancing on AMD EPYC systems") Suggested-by: Matt Fleming Signed-off-by: Geert Uytterhoeven Acked-by: Mel Gorman --- kernel/sched/topology.c | 1 - mm/page_alloc.c | 2 ++ 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c index 4e8698e62f0754a3..738ee7fa79724c7d 100644 --- a/kernel/sched/topology.c +++ b/kernel/sched/topology.c @@ -1481,7 +1481,6 @@ static int sched_domains_curr_level; int sched_max_numa_distance; static int *sched_domains_numa_distance; static struct cpumask ***sched_domains_numa_masks; -int __read_mostly node_reclaim_distance = RECLAIM_DISTANCE; static unsigned long __read_mostly *sched_numa_onlined_nodes; #endif diff --git a/mm/page_alloc.c b/mm/page_alloc.c index b37435c274cf1cb1..8b2d7a9bae6c1754 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3966,6 +3966,8 @@ bool zone_watermark_ok_safe(struct zone *z, unsigned int order, } #ifdef CONFIG_NUMA +int __read_mostly node_reclaim_distance = RECLAIM_DISTANCE; + static bool zone_allows_reclaim(struct zone *local_zone, struct zone *zone) { return node_distance(zone_to_nid(local_zone), zone_to_nid(zone)) <=