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Tue, 21 Mar 2023 17:05:28 +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 X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 10FC940027 X-Stat-Signature: oag6m6odujzi96xudbg9be6dgcposyta X-Rspam-User: X-HE-Tag: 1679418329-630012 X-HE-Meta: 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 r534r7R3 PMajb/RCLeqG4wFFKA8dhgaw714L5D60wM1kTy2fM5ibbx2LIjoUpIuDc7jA5MZlU6OG38mogqHKAT+qe3PurQhdC/2zIQyRnXR11H7YHTOzLtQOCch1N/IDCrGyDBFeqMxzeiPBbY+Xf/aEyxyL72q3K4lb5zRWw49E5N+C+rQB6xal20lU23PztU9T8h5UWi5zfeepGhQzFSBD0B1MBolRPp/U9ycCTz+dLnQpnLN4siglayXDG3J4xtzxvZWQihWybLuX/rgqxTqWK/bAtEBed6VtHttyATHVC+4B/vBnZimeZVu2aFcAnwLFZH6lyJsvJxVS5kLBqGePZytB/tK/eIl9/U/fwcIwX/gd6j3aZuP+R+xqyCmauDVBDgzB01I06r6UfKHyzFYwAcQvik4Jx3g== 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: "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