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 95AD0C43331 for ; Fri, 27 Mar 2020 22:01:47 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 537A32072F 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" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 537A32072F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 02A6E6B0032; Fri, 27 Mar 2020 18:01:47 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id F1BA56B0036; Fri, 27 Mar 2020 18:01:46 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DBD176B006C; Fri, 27 Mar 2020 18:01:46 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0176.hostedemail.com [216.40.44.176]) by kanga.kvack.org (Postfix) with ESMTP id C3F4C6B0036 for ; Fri, 27 Mar 2020 18:01:46 -0400 (EDT) Received: from smtpin23.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 8948E181AD0A3 for ; Fri, 27 Mar 2020 22:01:46 +0000 (UTC) X-FDA: 76642515012.23.mine97_49acf7ed74b22 X-HE-Tag: mine97_49acf7ed74b22 X-Filterd-Recvd-Size: 3833 Received: from mail-wm1-f67.google.com (mail-wm1-f67.google.com [209.85.128.67]) by imf37.hostedemail.com (Postfix) with ESMTP for ; Fri, 27 Mar 2020 22:01:46 +0000 (UTC) Received: by mail-wm1-f67.google.com with SMTP id f74so3216114wmf.0 for ; Fri, 27 Mar 2020 15:01:46 -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=V1fIP2JmUeKP4uNvCeOoUKONO4Z1+cnvhKupN9R5yNeE/yNKGbFICl9ahBbQHyw++R q9qdi5ihV3QQOOZwbmitNeJ5WKJiSeX6vOTACmGW8pptFebwlDq+mDrH3e0WQXfYK0nC zzcd/w52uQsVA7HgivcJrXUZPLFXBBa/7P17RnrAKlJ2RKmjNSlI4FU02PSQeM9JRZ3P a/7b6GoMEyJa9WpWe1vekfEy/A1E97WzP9AtE9gaBJeI6TPwfDxw3NPAbX3fHGeOecBB x3Kt1YrP7QlUEO2QfDzsMxu/GNuD0jkUBPC1qiXuHCkfMf2hHGj2bLuRXLWZ0U2doOOE /NsA== X-Gm-Message-State: ANhLgQ3s5hDd5qWvX7PLIuX8w5/szDmbkDsZdc1pIJJrPb0cONJnhAsS Seh/uon/xDGNYISeYh9N1jY= 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> 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: 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