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=-5.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 1AF88C433E0 for ; Wed, 20 May 2020 00:08:04 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id BC93C20826 for ; Wed, 20 May 2020 00:08:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="d5CdjIyK" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BC93C20826 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; 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Wed, 20 May 2020 00:08:02 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 66F9C20823; Wed, 20 May 2020 00:08:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1589933281; bh=1mQIVzBEVXiAHKXidnZvaTkzIZNG++YeuAEFUy1/WFk=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=d5CdjIyKPqetTI2gOmLRCTQtUL5cnDY0cYbcZWZ/NJWAwq6wWW0NLTiBWP2LrmAlY JPEWllcyaforZS5RR+SFUP2Vab3MMWVowQSI424zwAr6yNI7pzqxq0TWr1L/PLMGB9 iPXCu2N4E5tSd7mg4ojsIjV3pfDc0Nz5eFgVUIl0= Date: Tue, 19 May 2020 17:08:00 -0700 From: Andrew Morton To: kbuild test robot Cc: Mike Rapoport , kbuild-all@lists.01.org, Linux Memory Management List Subject: Re: [linux-next:master 9340/10701] arch/arc/mm/init.c:80:6: warning: no previous prototype for 'arch_has_descending_max_zone_pfns' Message-Id: <20200519170800.cd2519210f476141e9573375@linux-foundation.org> In-Reply-To: <202005200351.ALIftL4S%lkp@intel.com> References: <202005200351.ALIftL4S%lkp@intel.com> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit 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, 20 May 2020 03:43:55 +0800 kbuild test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > head: fb57b1fabcb28f358901b2df90abd2b48abc1ca8 > commit: aa3238a152d1646868ac81bee4eee08ba39594de [9340/10701] mm: free_area_init: allow defining max_zone_pfn in descending order > config: arc-randconfig-r011-20200519 (attached as .config) > compiler: arc-elf-gcc (GCC) 9.3.0 > reproduce: > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > git checkout aa3238a152d1646868ac81bee4eee08ba39594de > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kbuild test robot > > All warnings (new ones prefixed by >>, old ones prefixed by <<): > > arch/arc/mm/init.c:39:13: warning: no previous prototype for 'arc_get_mem_sz' [-Wmissing-prototypes] > 39 | long __init arc_get_mem_sz(void) > | ^~~~~~~~~~~~~~ > >> arch/arc/mm/init.c:80:6: warning: no previous prototype for 'arch_has_descending_max_zone_pfns' [-Wmissing-prototypes] > 80 | bool arch_has_descending_max_zone_pfns(void) > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/arc/mm/init.c:91:13: warning: no previous prototype for 'setup_arch_memory' [-Wmissing-prototypes] Thanks. This should do it: --- a/include/linux/mm.h~mm-free_area_init-allow-defining-max_zone_pfn-in-descending-order-fix-2-fix +++ a/include/linux/mm.h @@ -2464,6 +2464,7 @@ extern void setup_per_cpu_pageset(void); extern int min_free_kbytes; extern int watermark_boost_factor; extern int watermark_scale_factor; +extern bool arch_has_descending_max_zone_pfns(void); /* nommu.c */ extern atomic_long_t mmap_pages_allocated; _