From patchwork Thu Jul 21 13:04:19 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Huacai Chen X-Patchwork-Id: 12925090 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 06D42C433EF for ; Thu, 21 Jul 2022 13:08:54 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 7C3F28E0002; Thu, 21 Jul 2022 09:08:54 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 772948E0001; Thu, 21 Jul 2022 09:08:54 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 63B188E0002; Thu, 21 Jul 2022 09:08:54 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id 53C0F8E0001 for ; Thu, 21 Jul 2022 09:08:54 -0400 (EDT) Received: from smtpin02.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id 2C39AC08CB for ; Thu, 21 Jul 2022 13:08:54 +0000 (UTC) X-FDA: 79711136988.02.A68831C Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by imf24.hostedemail.com (Postfix) with ESMTP id 1A32C18008E for ; Thu, 21 Jul 2022 13:08:52 +0000 (UTC) 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 dfw.source.kernel.org (Postfix) with ESMTPS id 521B861EBC; Thu, 21 Jul 2022 13:08:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 46EC7C341CF; Thu, 21 Jul 2022 13:08:47 +0000 (UTC) From: Huacai Chen To: Arnd Bergmann , Huacai Chen , Thomas Bogendoerfer , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Catalin Marinas , Will Deacon 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 V5 4/4] LoongArch: Enable ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP Date: Thu, 21 Jul 2022 21:04:19 +0800 Message-Id: <20220721130419.1904711-5-chenhuacai@loongson.cn> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220721130419.1904711-1-chenhuacai@loongson.cn> References: <20220721130419.1904711-1-chenhuacai@loongson.cn> MIME-Version: 1.0 ARC-Authentication-Results: i=1; imf24.hostedemail.com; dkim=none; dmarc=none; spf=pass (imf24.hostedemail.com: domain of "SRS0=9tkS=X2=loongson.cn=chenhuacai@kernel.org" designates 139.178.84.217 as permitted sender) smtp.mailfrom="SRS0=9tkS=X2=loongson.cn=chenhuacai@kernel.org" ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1658408933; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=htnI0L7BSh2otV5VB3YE4TqIv6r8S3sesRk7I06txvk=; b=CjVJC3qLKm6xLeMTXOz86t/EsLQZszOcUJfm6GkO5jljOxUo/fR0lBJkphzXcpWktUhlpk cI6tknTu0aCRmbuVetwElBD9mIr+fsV9olVIN0F1fsq3ehCpXSBzkQtb9xBWNjpAjn8+De cS86TazTDVgI1PSxtznHGBgz5fnhbx0= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1658408933; a=rsa-sha256; cv=none; b=FTdnjXAeKKOocGMtJlf14UXrcEznobuJNebNliO9Xg70uYuWFX4Wnulkbgj4PE7CvrFQDr iN2b4KGyrpelYWDW3QTY2LNLlJLYYwM+QEo5fwmOwhbxJNhEo/yUj7IpCHAapC8XJgmD69 W6a3K+2t4738MgiWLU0sd/7EB/GT7Pw= X-Stat-Signature: 3yifdzbct74zu3uxhx81dbjwmaxg9u1k X-Rspamd-Queue-Id: 1A32C18008E X-Rspam-User: Authentication-Results: imf24.hostedemail.com; dkim=none; dmarc=none; spf=pass (imf24.hostedemail.com: domain of "SRS0=9tkS=X2=loongson.cn=chenhuacai@kernel.org" designates 139.178.84.217 as permitted sender) smtp.mailfrom="SRS0=9tkS=X2=loongson.cn=chenhuacai@kernel.org" X-Rspamd-Server: rspam11 X-HE-Tag: 1658408932-689334 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: 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 f3ff806317ac..86cbbe7d2918 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