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=-9.8 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,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 E1152C2D0E5 for ; Fri, 27 Mar 2020 22:01:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B25882072F for ; Fri, 27 Mar 2020 22:01:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="BpllLOss" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727791AbgC0WBp (ORCPT ); Fri, 27 Mar 2020 18:01:45 -0400 Received: from mail-wm1-f65.google.com ([209.85.128.65]:39772 "EHLO mail-wm1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727707AbgC0WBp (ORCPT ); Fri, 27 Mar 2020 18:01:45 -0400 Received: by mail-wm1-f65.google.com with SMTP id e9so2252611wme.4 for ; Fri, 27 Mar 2020 15:01:44 -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:in-reply-to:references; bh=XnLQep2lydjftwMmt6HoIl5lVjdDRVIm/B2qHNSgXII=; b=BpllLOssvHng2UrUTpZ8HD5uh0iHoPm0xW5pzyg910YurEuPaXzvxN9kcEyxiUYHHb pm+4GooXP881cTpknMX0aMtiqQ353cNcMFGZc69n4qIgwedXPcd0tVm17NgSxvVwUAwJ tq6sQtDrQpVNXUr7jHrkU0AqedXQLXfENEHXdbq6WKvPom1dWFK7Ie+mPXu+GT1y2jeP NwbEjCzfKhsFppSYBqt9apVdVWA2Wk0St1VsfjCIjtrg8u1mxn0hbpa28w1hZebMDCdq JU8ZehegVn88bcluyOprHYxGWh+IgRmaSlgsPSSXUHqJtAsg/XlPW2RLdT5sj2KVnlFR 4G1w== 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:in-reply-to :references; bh=XnLQep2lydjftwMmt6HoIl5lVjdDRVIm/B2qHNSgXII=; b=fK+DE2dnE4/AtoDKM1+R2YQGpnfqM9VJWEPBlXICaNulwERBjLcqu9u5OSzI4OQAoj 6JGpVywRcR7Hw5bUBSYiLNG3drp4f+yAR1nmqqg2tWzKEb+pg8WPfpKx2yUXXkItBL1s yrHUps7wvoUbmC9xQ1ynm+OaYqdGg1OhJr5wRg4P9H4uu5WQQieHII6nymzh/vgrEUHU SeLw/r9AVD4Gststgf4uqFtKlOzGU5d6PmRgjcDVAF+Kd7x2ULRq3JBP8zCpSULg/yJh RMjzP2HcOq5eQMk9W6QJAbo4GAdnUgmFvJz25x3cotLOLYJoaVkm94bstgt3huUE3MXX okRA== X-Gm-Message-State: ANhLgQ1p7CCrJcJh4UUqi73In9BVgflLqDSEiDbcsqmZ68G0PFrvQBaW e+iy2d9jhVCEJ0mgKORVDk0= X-Google-Smtp-Source: ADFU+vt/HkTH78PKwAOIbtRVmwgtK8/TzNy0i9xLfALHCE1xvdi6K+3teolQyt9PMe5QoSP2uFv7EQ== X-Received: by 2002:a1c:2605:: with SMTP id m5mr833534wmm.184.1585346503517; Fri, 27 Mar 2020 15:01:43 -0700 (PDT) Received: from localhost ([185.92.221.13]) by smtp.gmail.com with ESMTPSA id a186sm9522774wmh.33.2020.03.27.15.01.42 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 27 Mar 2020 15:01:42 -0700 (PDT) From: Wei Yang To: akpm@linux-foundation.org Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, jgg@ziepe.ca, david@redhat.com, Wei Yang Subject: [Patch v2 2/2] mm/page_alloc.c: define node_order with all zero Date: Fri, 27 Mar 2020 22:01:21 +0000 Message-Id: <20200327220121.27823-2-richard.weiyang@gmail.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20200327220121.27823-1-richard.weiyang@gmail.com> References: <20200327220121.27823-1-richard.weiyang@gmail.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Since we always clear node_order before getting it, we can leverage compiler to do this instead of at run time. Signed-off-by: Wei Yang --- mm/page_alloc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index dfcf2682ed40..49dd1f25c000 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5585,7 +5585,7 @@ static void build_thisnode_zonelists(pg_data_t *pgdat) static void build_zonelists(pg_data_t *pgdat) { - static int node_order[MAX_NUMNODES]; + static int node_order[MAX_NUMNODES] = {0}; int node, load, nr_nodes = 0; nodemask_t used_mask = NODE_MASK_NONE; int local_node, prev_node; @@ -5595,7 +5595,6 @@ static void build_zonelists(pg_data_t *pgdat) load = nr_online_nodes; prev_node = local_node; - memset(node_order, 0, sizeof(node_order)); while ((node = find_next_best_node(local_node, &used_mask)) >= 0) { /* * We don't want to pressure a particular node. -- 2.23.0