From patchwork Thu Jul 28 11:38:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Huacai Chen X-Patchwork-Id: 12931164 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7E802C04A68 for ; Thu, 28 Jul 2022 11:42:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236879AbiG1Ll7 (ORCPT ); Thu, 28 Jul 2022 07:41:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45974 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237631AbiG1Llo (ORCPT ); Thu, 28 Jul 2022 07:41:44 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DE27B691EE; Thu, 28 Jul 2022 04:41:39 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 3B777B82321; Thu, 28 Jul 2022 11:41:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id ED0BAC433C1; Thu, 28 Jul 2022 11:41:31 +0000 (UTC) From: Huacai Chen To: Arnd Bergmann , Huacai Chen , Thomas Bogendoerfer , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Catalin Marinas , Will Deacon , Dinh Nguyen Cc: loongarch@lists.linux.dev, linux-arch@vger.kernel.org, Xuefeng Li , Guo Ren , Xuerui Wang , Jiaxun Yang , Andrew Morton , linux-mm@kvack.org, linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Feiyang Chen , Huacai Chen Subject: [PATCH V6 4/4] LoongArch: Enable ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP Date: Thu, 28 Jul 2022 19:38:01 +0800 Message-Id: <20220728113801.2235151-5-chenhuacai@loongson.cn> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220728113801.2235151-1-chenhuacai@loongson.cn> References: <20220728113801.2235151-1-chenhuacai@loongson.cn> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org From: Feiyang Chen The feature of minimizing overhead of struct page associated with each HugeTLB page is implemented on x86_64. However, the infrastructure of this feature is already there, so just select ARCH_WANT_HUGETLB_PAGE_ OPTIMIZE_VMEMMAP is enough to enable this feature for LoongArch. To avoid the following build error on LoongArch we should include linux/ static_key.h in page-flags.h. In file included from ./include/linux/mmzone.h:22, from ./include/linux/gfp.h:6, from ./include/linux/mm.h:7, from arch/loongarch/kernel/asm-offsets.c:9: ./include/linux/page-flags.h:208:1: warning: data definition has no type or storage class 208 | DECLARE_STATIC_KEY_MAYBE(CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON, | ^~~~~~~~~~~~~~~~~~~~~~~~ ./include/linux/page-flags.h:208:1: error: type defaults to 'int' in declaration of 'DECLARE_STATIC_KEY_MAYBE' [-Werror=implicit-int] ./include/linux/page-flags.h:209:26: warning: parameter names (without types) in function declaration 209 | hugetlb_optimize_vmemmap_key); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ ./include/linux/page-flags.h: In function 'hugetlb_optimize_vmemmap_enabled': ./include/linux/page-flags.h:213:16: error: implicit declaration of function 'static_branch_maybe' [-Werror=implicit-function-declaration] 213 | return static_branch_maybe(CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON, | ^~~~~~~~~~~~~~~~~~~ ./include/linux/page-flags.h:213:36: error: 'CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON' undeclared (first use in this function); did you mean 'CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP'? 213 | return static_branch_maybe(CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP ./include/linux/page-flags.h:213:36: note: each undeclared identifier is reported only once for each function it appears in ./include/linux/page-flags.h:214:37: error: 'hugetlb_optimize_vmemmap_key' undeclared (first use in this function); did you mean 'hugetlb_optimize_vmemmap_enabled'? 214 | &hugetlb_optimize_vmemmap_key); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ | hugetlb_optimize_vmemmap_enabled Signed-off-by: Feiyang Chen Signed-off-by: Huacai Chen --- arch/loongarch/Kconfig | 1 + include/linux/page-flags.h | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index cff781d92c81..de78c86a205c 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -49,6 +49,7 @@ config LOONGARCH select ARCH_USE_CMPXCHG_LOCKREF select ARCH_USE_QUEUED_RWLOCKS select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT + select ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP select ARCH_WANTS_NO_INSTR select BUILDTIME_TABLE_SORT select COMMON_CLK diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index e66f7aa3191d..28a53ac7aa3e 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -9,6 +9,7 @@ #include #include #include +#include #ifndef __GENERATING_BOUNDS_H #include #include