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[2620:137:e000::1:20]) by mx.google.com with ESMTP id p12-20020a1709028a8c00b0019e30e30684si8707186plo.281.2023.03.19.15.02.07; Sun, 19 Mar 2023 15:02:37 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b="Kk5f+/gw"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229806AbjCSWA3 (ORCPT + 99 others); Sun, 19 Mar 2023 18:00:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50924 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229572AbjCSWA1 (ORCPT ); Sun, 19 Mar 2023 18:00:27 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0156E14239; Sun, 19 Mar 2023 15:00:24 -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 76A7FB80D28; Sun, 19 Mar 2023 22:00:23 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 24974C433D2; Sun, 19 Mar 2023 22:00:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679263222; bh=n5dARZfFatcR/h3JAA/9fYzmvZk45a19M/lZTBw1xvI=; h=From:To:Cc:Subject:Date:From; b=Kk5f+/gwsjcbiOO1/wCvoyl4Anptv1hWH8xJESI5zcw3p2CsjLWtDdmR9QdQM+3LJ 48ck9Nbm7HCsv1BIhG0z68FKMnc+paUE4nNp8CBGtz2wXTUGG4xufiBddp5daENesA FQveh29Cd8GoMFH5KgVOfc/xAYlta53sbHuynvA2gW4zAcVZzL1Q+M2DEKtPvBBV59 yQHCYCnIbS95lr+op+v93shUF7mcTAU5sabWijpg3+CfGSUEuAmbmMW/Y0uf2fPUD1 yLw4uhA7DGldAgR2Rjl/gSBJw2t+xBv4/+fuSE7ivbtFZ//GlqgeEG925HAm/9hBOl 99zYcrRdV3eEg== From: Mike Rapoport To: Andrew Morton Cc: David Hildenbrand , Matthew Wilcox , Mel Gorman , Michal Hocko , Mike Rapoport , Thomas Bogendoerfer , Vlastimil Babka , linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 00/15] mm: move core MM initialization to mm/mm_init.c Date: Sun, 19 Mar 2023 23:59:53 +0200 Message-Id: <20230319220008.2138576-1-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1760835253948900781?= X-GMAIL-MSGID: =?utf-8?q?1760835253948900781?= From: "Mike Rapoport (IBM)" Also in git: https://git.kernel.org/rppt/h/mm-init/v1 This set moves most of the core MM initialization to mm/mm_init.c. This largely includes free_area_init() and its helpers, functions used at boot time, mm_init() from init/main.c and some of the functions it calls. Aside from gaining some more space before mm/page_alloc.c hits 10k lines, this makes mm/page_alloc.c to be mostly about buddy allocator and moves the init code out of the way, which IMO improves maintainability. Besides, this allows to move a couple of declarations out of include/linux and make them private to mm/. And as an added bonus there a slight decrease in vmlinux size. For tinyconfig and defconfig on x86 I've got tinyconfig: text data bss dec hex filename 853206 289376 1200128 2342710 23bf36 a/vmlinux 853198 289344 1200128 2342670 23bf0e b/vmlinux defconfig: text data bss dec hex filename 26152959 9730634 2170884 38054477 244aa4d a/vmlinux 26152945 9730602 2170884 38054431 244aa1f b/vmlinux Mike Rapoport (IBM) (15): mips: fix comment about pgtable_init() mm/cma: move init_cma_reserved_pages() to cma.c and make it static mm/page_alloc: add helper for checking if check_pages_enabled mm: move most of core MM initialization to mm/mm_init.c mm: handle hashdist initialization in mm/mm_init.c mm/page_alloc: rename page_alloc_init() to page_alloc_init_cpuhp() init: fold build_all_zonelists() and page_alloc_init_cpuhp() to mm_init() init,mm: move mm_init() to mm/mm_init.c and rename it to mm_core_init() mm: move pgtable_init() to mm/mm_init.c and make it static mm: move init_mem_debugging_and_hardening() to mm/mm_init.c init,mm: fold late call to page_ext_init() to page_alloc_init_late() mm: move mem_init_print_info() to mm_init.c mm: move kmem_cache_init() declaration to mm/slab.h mm: move vmalloc_init() declaration to mm/internal.h MAINTAINERS: extend memblock entry to include MM initialization MAINTAINERS | 3 +- arch/mips/include/asm/fixmap.h | 2 +- include/linux/gfp.h | 7 +- include/linux/mm.h | 9 +- include/linux/page_ext.h | 2 - include/linux/slab.h | 1 - include/linux/vmalloc.h | 4 - init/main.c | 74 +- mm/cma.c | 21 + mm/internal.h | 45 + mm/mm_init.c | 2532 +++++++++++++++++++++++++++ mm/page_alloc.c | 2981 +++----------------------------- mm/slab.h | 1 + 13 files changed, 2855 insertions(+), 2827 deletions(-) base-commit: 4018ab1f7cec061b8425737328edefebdc0ab832