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dkim=none (message not signed) header.d=none;amazon.com; dmarc=none action=none header.from=oracle.com; Received: from BY5PR10MB4196.namprd10.prod.outlook.com (2603:10b6:a03:20d::23) by BYAPR10MB3159.namprd10.prod.outlook.com (2603:10b6:a03:153::25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3933.32; Fri, 12 Mar 2021 17:38:21 +0000 Received: from BY5PR10MB4196.namprd10.prod.outlook.com ([fe80::980e:61ba:57d2:47ee]) by BY5PR10MB4196.namprd10.prod.outlook.com ([fe80::980e:61ba:57d2:47ee%8]) with mapi id 15.20.3933.031; Fri, 12 Mar 2021 17:38:21 +0000 Subject: Re: [PATCH 0/3] Add support for free vmemmap pages of HugeTLB for arm64 To: "Bodeddula, Balasubramaniam" , Chen Huang , Muchun Song , "will@kernel.org" , "akpm@linux-foundation.org" , "david@redhat.com" , "osalvador@suse.de" , "rientjes@google.com" Cc: "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "duanxiongchun@bytedance.com" , "Umesh Sargur, Gautam" References: <20210310071535.35245-1-songmuchun@bytedance.com> <3eae8b3e-d6e0-83c8-e9c6-5420767788d5@huawei.com> From: Mike Kravetz Message-ID: Date: Fri, 12 Mar 2021 09:38:17 -0800 User-Agent: Mozilla/5.0 (X11; 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These patches were applied on top of the x86 patch, which worked fine. But in this case we don't see the same improvements in our testing. We made sure we set CONFIG_HUGETLB_PAGE_FREE_VMEMMAP=y in our .config file. > > Are we missing any more configuration settings to get this patch to work on ARM? Can you please help with general troubleshooting steps to debug what could be going wrong. > Are you specifying 'hugetlb_free_vmemmap=on' on the kernel command line? This feature is only enabled if you 'opt in' via the command line option. -- Mike Kravetz 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=-7.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MSGID_FROM_MTA_HEADER,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 D3EF8C433DB for ; Fri, 12 Mar 2021 17:44:17 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 480BA64F0E for ; Fri, 12 Mar 2021 17:44:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 480BA64F0E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=oracle.com Authentication-Results: mail.kernel.org; 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Fri, 12 Mar 2021 17:38:21 +0000 Subject: Re: [PATCH 0/3] Add support for free vmemmap pages of HugeTLB for arm64 To: "Bodeddula, Balasubramaniam" , Chen Huang , Muchun Song , "will@kernel.org" , "akpm@linux-foundation.org" , "david@redhat.com" , "osalvador@suse.de" , "rientjes@google.com" Cc: "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "duanxiongchun@bytedance.com" , "Umesh Sargur, Gautam" References: <20210310071535.35245-1-songmuchun@bytedance.com> <3eae8b3e-d6e0-83c8-e9c6-5420767788d5@huawei.com> From: Mike Kravetz Message-ID: Date: Fri, 12 Mar 2021 09:38:17 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.1 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [50.38.35.18] X-ClientProxiedBy: MWHPR11CA0019.namprd11.prod.outlook.com (2603:10b6:301:1::29) To BY5PR10MB4196.namprd10.prod.outlook.com (2603:10b6:a03:20d::23) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [192.168.2.112] (50.38.35.18) by MWHPR11CA0019.namprd11.prod.outlook.com (2603:10b6:301:1::29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3912.17 via Frontend Transport; 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identity=mailfrom; envelope-from=""; helo=aserp2130.oracle.com; client-ip=141.146.126.79 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1615571050-517222 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 3/11/21 10:00 AM, Bodeddula, Balasubramaniam wrote: > Hey, thanks for the testing steps. > > I tried applying these patches on 5.11 source tree. These patches were applied on top of the x86 patch, which worked fine. But in this case we don't see the same improvements in our testing. We made sure we set CONFIG_HUGETLB_PAGE_FREE_VMEMMAP=y in our .config file. > > Are we missing any more configuration settings to get this patch to work on ARM? Can you please help with general troubleshooting steps to debug what could be going wrong. > Are you specifying 'hugetlb_free_vmemmap=on' on the kernel command line? This feature is only enabled if you 'opt in' via the command line option. -- Mike Kravetz 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=-5.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MSGID_FROM_MTA_HEADER,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=no 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 0B8C6C433DB for ; Fri, 12 Mar 2021 17:46:00 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 6A02464E90 for ; Fri, 12 Mar 2021 17:45:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6A02464E90 Authentication-Results: mail.kernel.org; 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dkim=none (message not signed) header.d=none;amazon.com; dmarc=none action=none header.from=oracle.com; Received: from BY5PR10MB4196.namprd10.prod.outlook.com (2603:10b6:a03:20d::23) by BYAPR10MB3159.namprd10.prod.outlook.com (2603:10b6:a03:153::25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3933.32; Fri, 12 Mar 2021 17:38:21 +0000 Received: from BY5PR10MB4196.namprd10.prod.outlook.com ([fe80::980e:61ba:57d2:47ee]) by BY5PR10MB4196.namprd10.prod.outlook.com ([fe80::980e:61ba:57d2:47ee%8]) with mapi id 15.20.3933.031; Fri, 12 Mar 2021 17:38:21 +0000 Subject: Re: [PATCH 0/3] Add support for free vmemmap pages of HugeTLB for arm64 To: "Bodeddula, Balasubramaniam" , Chen Huang , Muchun Song , "will@kernel.org" , "akpm@linux-foundation.org" , "david@redhat.com" , "osalvador@suse.de" , "rientjes@google.com" Cc: "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "duanxiongchun@bytedance.com" , "Umesh Sargur, Gautam" References: <20210310071535.35245-1-songmuchun@bytedance.com> <3eae8b3e-d6e0-83c8-e9c6-5420767788d5@huawei.com> From: Mike Kravetz Message-ID: Date: Fri, 12 Mar 2021 09:38:17 -0800 User-Agent: Mozilla/5.0 (X11; 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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 3/11/21 10:00 AM, Bodeddula, Balasubramaniam wrote: > Hey, thanks for the testing steps. > > I tried applying these patches on 5.11 source tree. These patches were applied on top of the x86 patch, which worked fine. But in this case we don't see the same improvements in our testing. We made sure we set CONFIG_HUGETLB_PAGE_FREE_VMEMMAP=y in our .config file. > > Are we missing any more configuration settings to get this patch to work on ARM? Can you please help with general troubleshooting steps to debug what could be going wrong. > Are you specifying 'hugetlb_free_vmemmap=on' on the kernel command line? This feature is only enabled if you 'opt in' via the command line option. -- Mike Kravetz _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel