From patchwork Tue Mar 21 17:04:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13182949 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 63183C6FD1D for ; Tue, 21 Mar 2023 17:05:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230419AbjCURFw (ORCPT ); Tue, 21 Mar 2023 13:05:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60758 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230337AbjCURFh (ORCPT ); Tue, 21 Mar 2023 13:05:37 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 55D5E17CE9; Tue, 21 Mar 2023 10:05:28 -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 dfw.source.kernel.org (Postfix) with ESMTPS id D59D261D3D; Tue, 21 Mar 2023 17:05:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CEB75C433EF; Tue, 21 Mar 2023 17:05:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679418327; bh=jlgHU9SCJxg4qa7O1zwTnf+v78Uv+aUw7L56oscbVn4=; h=From:To:Cc:Subject:Date:From; b=SR//Z3es/uwPV/FylYLKutrPpcqB+cPpuUl7i4+EYeHAiWOyzte/q5CE0uFzEMCc6 Tl8W6Mm6EGyewcT/4H3YaBKW3fFGERVvWHB9EjlgGFrXEhOkY1Ro91rC3TcA/kP8hf 5el/RQT0rmijOmgowXMYvlaZCDhd/nTZ+RD4hDdGwEIC1ILNlv2BYzQP/InXBBv4tW 3lQUHYg74e+GwNYXAq18WY0Vq7lEpNJYq9u4M3TFXj5+giR1Zwd9gOM3Qc91FqHq9V 5kz/HmxIbxrWgOhuL4XVyusBy/sWOl+5Ki2yioS0PR23DdRYCYzaKKpv3L2MQtNooJ chpznnjMxOTJw== From: Mike Rapoport To: Andrew Morton Cc: David Hildenbrand , Doug Berger , 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 v2 00/14] mm: move core MM initialization to mm/mm_init.c Date: Tue, 21 Mar 2023 19:04:59 +0200 Message-Id: <20230321170513.2401534-1-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org From: "Mike Rapoport (IBM)" Also in git: https://git.kernel.org/rppt/h/mm-init/v2 v2: * move init_cma_reserved_pageblock() from cma.c to mm_init.c * rename init_mem_debugging_and_hardening() to mem_debugging_and_hardening_init() * inline pgtable_init() into mem_core_init() * add Acked and Reviewed tags (thanks David, hopefully I've picked them right) v1: https://lore.kernel.org/all/20230319220008.2138576-1-rppt@kernel.org 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) (14): mips: fix comment about pgtable_init() 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: call {ptlock,pgtable}_cache_init() directly from mm_core_init() 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 | 1 + mm/internal.h | 52 +- mm/mm_init.c | 2547 +++++++++++++++++++++++++++ mm/page_alloc.c | 2981 +++----------------------------- mm/slab.h | 1 + 13 files changed, 2856 insertions(+), 2828 deletions(-) base-commit: 4018ab1f7cec061b8425737328edefebdc0ab832 Acked-by: Vlastimil Babka