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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 79068C433DF for ; Tue, 7 Jul 2020 18:02:50 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4C85E206E2 for ; Tue, 7 Jul 2020 18:02:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="R+1+TTI6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4C85E206E2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=gGmTqcpvQCt9ZBwl/76YvsGjoVZUejbm3TAW/g9Ghos=; b=R+1+TTI62H+oWWTr1MilHBbf3 z10SMrspFE7ZljMeIQXCz1Dhi5CgIGa+v5llA0JNeaYLxZ2pWXMovagD2xEEmTZFGHFwoZasGUi7F 5yr2aVXPDXuU2R3ljttsQQ/toyJdtlGAyJQ/iix3zeh5zA+xEUjrAsl35/8PZdjD0M542iosft903 y/89Raz9hRDSvMlg1vI+6HzUISrGb8z7taQLMZ6i+WMPh+QZFgyN4SH2v7rWRyuA2ybRCLDz2DcdR We8VqIGL3pci3v5GltH8zPyzni+bcDidqB3V27GPIeWLWA42kB3fweNRiO7QBWNUEFaBdLr865Um6 RWKyIO4XQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jsrtv-000514-C2; Tue, 07 Jul 2020 18:01:03 +0000 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jsrtt-00050O-Gn for linux-arm-kernel@lists.infradead.org; Tue, 07 Jul 2020 18:01:02 +0000 Received: from pps.filterd (m0098417.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 067HWPj9190732; Tue, 7 Jul 2020 14:00:53 -0400 Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 324ptpxudc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 07 Jul 2020 14:00:53 -0400 Received: from m0098417.ppops.net (m0098417.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.36/8.16.0.36) with SMTP id 067HvTEq104818; Tue, 7 Jul 2020 14:00:53 -0400 Received: from ppma06fra.de.ibm.com (48.49.7a9f.ip4.static.sl-reverse.com [159.122.73.72]) by mx0a-001b2d01.pphosted.com with ESMTP id 324ptpxubh-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 07 Jul 2020 14:00:52 -0400 Received: from pps.filterd (ppma06fra.de.ibm.com [127.0.0.1]) by ppma06fra.de.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 067HpdAD011540; Tue, 7 Jul 2020 18:00:49 GMT Received: from b06cxnps4076.portsmouth.uk.ibm.com (d06relay13.portsmouth.uk.ibm.com [9.149.109.198]) by ppma06fra.de.ibm.com with ESMTP id 322h1g9tcd-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 07 Jul 2020 18:00:49 +0000 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 067I0l8434406650 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 7 Jul 2020 18:00:47 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3714F4C050; Tue, 7 Jul 2020 18:00:47 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id AC2284C070; Tue, 7 Jul 2020 18:00:45 +0000 (GMT) Received: from linux.ibm.com (unknown [9.148.202.169]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Tue, 7 Jul 2020 18:00:45 +0000 (GMT) Date: Tue, 7 Jul 2020 21:00:43 +0300 From: Mike Rapoport To: David Hildenbrand Subject: Re: [PATCH v2 1/3] arm64/numa: export memory_add_physaddr_to_nid as EXPORT_SYMBOL_GPL Message-ID: <20200707180043.GA386073@linux.ibm.com> References: <20200707055917.143653-1-justin.he@arm.com> <20200707055917.143653-2-justin.he@arm.com> <20200707115454.GN5913@dhcp22.suse.cz> <20200707121302.GB9411@linux.ibm.com> <474f93e7-c709-1a13-5418-29f1777f614c@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <474f93e7-c709-1a13-5418-29f1777f614c@redhat.com> X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235, 18.0.687 definitions=2020-07-07_09:2020-07-07, 2020-07-07 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 cotscore=-2147483648 mlxscore=0 phishscore=0 clxscore=1015 suspectscore=1 malwarescore=0 priorityscore=1501 lowpriorityscore=0 mlxlogscore=999 spamscore=0 bulkscore=0 adultscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2007070119 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200707_140101_644954_0FAAA5BA X-CRM114-Status: GOOD ( 26.24 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kaly Xin , Jia He , Baoquan He , linux-nvdimm@lists.01.org, Catalin Marinas , Chuhong Yuan , linux-kernel@vger.kernel.org, Michal Hocko , linux-mm@kvack.org, Vishal Verma , Dave Jiang , Dan Williams , Will Deacon , Andrew Morton , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Jul 07, 2020 at 02:26:08PM +0200, David Hildenbrand wrote: > On 07.07.20 14:13, Mike Rapoport wrote: > > On Tue, Jul 07, 2020 at 01:54:54PM +0200, Michal Hocko wrote: > >> On Tue 07-07-20 13:59:15, Jia He wrote: > >>> This exports memory_add_physaddr_to_nid() for module driver to use. > >>> > >>> memory_add_physaddr_to_nid() is a fallback option to get the nid in case > >>> NUMA_NO_NID is detected. > >>> > >>> Suggested-by: David Hildenbrand > >>> Signed-off-by: Jia He > >>> --- > >>> arch/arm64/mm/numa.c | 5 +++-- > >>> 1 file changed, 3 insertions(+), 2 deletions(-) > >>> > >>> diff --git a/arch/arm64/mm/numa.c b/arch/arm64/mm/numa.c > >>> index aafcee3e3f7e..7eeb31740248 100644 > >>> --- a/arch/arm64/mm/numa.c > >>> +++ b/arch/arm64/mm/numa.c > >>> @@ -464,10 +464,11 @@ void __init arm64_numa_init(void) > >>> > >>> /* > >>> * We hope that we will be hotplugging memory on nodes we already know about, > >>> - * such that acpi_get_node() succeeds and we never fall back to this... > >>> + * such that acpi_get_node() succeeds. But when SRAT is not present, the node > >>> + * id may be probed as NUMA_NO_NODE by acpi, Here provide a fallback option. > >>> */ > >>> int memory_add_physaddr_to_nid(u64 addr) > >>> { > >>> - pr_warn("Unknown node for memory at 0x%llx, assuming node 0\n", addr); > >>> return 0; > >>> } > >>> +EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid); > >> > >> Does it make sense to export a noop function? Wouldn't make more sense > >> to simply make it static inline somewhere in a header? I haven't checked > >> whether there is an easy way to do that sanely bu this just hit my eyes. > > > > We'll need to either add a CONFIG_ option or arch specific callback to > > make both non-empty (x86, powerpc, ia64) and empty (arm64, sh) > > implementations coexist ... > > Note: I have a similar dummy (return 0) patch for s390x lying around here. Then we'll call it a tie - 3:3 ;-) > -- > Thanks, > > David / dhildenb > -- Sincerely yours, Mike. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel