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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 154E0C433FE for ; Wed, 13 Apr 2022 14:48:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234555AbiDMOu4 (ORCPT ); Wed, 13 Apr 2022 10:50:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40420 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236274AbiDMOuv (ORCPT ); Wed, 13 Apr 2022 10:50:51 -0400 Received: from mail-pl1-x632.google.com (mail-pl1-x632.google.com [IPv6:2607:f8b0:4864:20::632]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D62C463BF0 for ; Wed, 13 Apr 2022 07:48:29 -0700 (PDT) Received: by mail-pl1-x632.google.com with SMTP id p10so2157776plf.9 for ; Wed, 13 Apr 2022 07:48:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance-com.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=D/LdJAtOUO57Ha4IsgdkfD8oFYqd/Z71aYJmqNULy+Q=; b=tDtubE/ZwH48VZrJoDlBbZ3+P3KQGydQEJdFXKPOZgToajCjO+pn4TZojzE43ltN6s Ce0D9N8Rb0wPcLdJLIq4w1n1syJkOLwRvAU3gTbLNCPHkd1fJyQZAFej1vcVXzqThQpI cQIWi0FWFWFUZRDlVFfCbHKV3RH0O+yGzMPZBmljFsVoO+TjZ1PnjMgq3Rf5eDxhW1wC Cv/Iim/J0Zj2Jbe4/3jTDCqt7pzLtHzbrKeJ6gR7d2ef75OOCujFGYKxgn69xvFOzWxp /v4yVUV762iD/MKcDOAOvrbzG+6iNxTTiuzIl5J9zzVfR2G2gQV1tqhQRpLRCuqLh2Dq Q15A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=D/LdJAtOUO57Ha4IsgdkfD8oFYqd/Z71aYJmqNULy+Q=; b=4pXdjLOkl8WMlLjXiJb9KkioE1zYUODccbs3be56i+UO32TzqkHSkYETSn9cHhU1Jj uAhY6d4n/dx9zkjPU4Nn4URZWXTI1XBifOZerxttGyhXGt0xxW4CY7PekNpxhbm3VjnL xNgvcMFIyio9DN8D4hyiX+/UBhhza+uM8+keFbAOFLVxgwgV+FsNSX2DIv7y6gAcwi6q s1SHW32UcLWf/5lcW12FYLj9WN+zI45ajnsg547RsVZVEvXcfFM+vjF9p2yzDHtdlgPj 4HgAtwvvMXU4zYyE4j3Y/cBMFmoP2cgBRjNbIuuQJ0JB+N+vjkewd0UOgZKIUdmYUCyJ gohQ== X-Gm-Message-State: AOAM532pXx7LJWFjedWE37lzeYqZEjYqiHYHsvqyDRIOVswZhZgFnpMh +F/cu0ICCvtB9Evcf0Vg6wCcyw== X-Google-Smtp-Source: ABdhPJz2EPmb6m43FkHiFxBEpO7vn7u8K8m686phmKJ6SIsaXxoigMHrk2FsX/UcUEV3dgNYt4fFKg== X-Received: by 2002:a17:902:d4c3:b0:158:a79e:9bf with SMTP id o3-20020a170902d4c300b00158a79e09bfmr2237005plg.40.1649861309243; Wed, 13 Apr 2022 07:48:29 -0700 (PDT) Received: from FVFYT0MHHV2J.bytedance.net ([139.177.225.245]) by smtp.gmail.com with ESMTPSA id p27-20020a056a000a1b00b004f3f63e3cf2sm47817257pfh.58.2022.04.13.07.48.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Apr 2022 07:48:28 -0700 (PDT) From: Muchun Song To: corbet@lwn.net, mike.kravetz@oracle.com, akpm@linux-foundation.org, mcgrof@kernel.org, keescook@chromium.org, yzaikin@google.com, osalvador@suse.de, david@redhat.com, masahiroy@kernel.org Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, duanxiongchun@bytedance.com, smuchun@gmail.com, Muchun Song Subject: [PATCH v8 0/4] add hugetlb_optimize_vmemmap sysctl Date: Wed, 13 Apr 2022 22:47:44 +0800 Message-Id: <20220413144748.84106-1-songmuchun@bytedance.com> X-Mailer: git-send-email 2.32.0 (Apple Git-132) MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series is based on next-20220407. This series amis to add hugetlb_optimize_vmemmap sysctl to enable or disable the feature of optimizing vmemmap pages associated with HugeTLB pages. v8: - Fix compilation (scripts/selinux/mdp/mdp.c) error when CONFIG_SECURITY_SELINUX is selected. v7: - Fix circular dependency issue reported by kernel test robot. - Introduce CONFIG_HUGETLB_PAGE_HAS_OPTIMIZE_VMEMMAP instead of STRUCT_PAGE_SIZE_IS_POWER_OF_2. - Add more comments into vm.rst to explain hugetlb_optimize_vmemmap (Andrew). - Drop the patch "sysctl: allow to set extra1 to SYSCTL_ONE". - Add a new patch "use kstrtobool for hugetlb_vmemmap param parsing". - Reuse static_key's refcount to count the number of HugeTLB pages with vmemmap pages optimized to simplify the lock scheme. v6: - Remove "make syncconfig" from Kbuild. v5: - Fix not working properly if one is workig off of a very clean build reported by Luis Chamberlain. - Add Suggested-by for Luis Chamberlain. v4: - Introduce STRUCT_PAGE_SIZE_IS_POWER_OF_2 inspired by Luis. v3: - Add pr_warn_once() (Mike). - Handle the transition from enabling to disabling (Luis) v2: - Fix compilation when !CONFIG_MHP_MEMMAP_ON_MEMORY reported by kernel test robot . - Move sysctl code from kernel/sysctl.c to mm/hugetlb_vmemmap.c. Muchun Song (4): mm: hugetlb_vmemmap: introduce CONFIG_HUGETLB_PAGE_HAS_OPTIMIZE_VMEMMAP mm: memory_hotplug: override memmap_on_memory when hugetlb_free_vmemmap=on mm: hugetlb_vmemmap: use kstrtobool for hugetlb_vmemmap param parsing mm: hugetlb_vmemmap: add hugetlb_optimize_vmemmap sysctl Documentation/admin-guide/kernel-parameters.txt | 6 +- Documentation/admin-guide/sysctl/vm.rst | 27 +++++++ Kbuild | 19 +++++ arch/x86/mm/init_64.c | 2 +- include/linux/hugetlb.h | 2 +- include/linux/kconfig.h | 4 + include/linux/memory_hotplug.h | 9 +++ include/linux/mm.h | 2 +- include/linux/page-flags.h | 2 +- kernel/autoconf_ext.c | 26 ++++++ mm/hugetlb_vmemmap.c | 102 ++++++++++++++++++++---- mm/hugetlb_vmemmap.h | 8 +- mm/memory_hotplug.c | 27 +++++-- mm/sparse-vmemmap.c | 4 +- scripts/mod/Makefile | 2 + 15 files changed, 207 insertions(+), 35 deletions(-) create mode 100644 kernel/autoconf_ext.c -- 2.11.0