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bh=jlgHU9SCJxg4qa7O1zwTnf+v78Uv+aUw7L56oscbVn4=; h=From:To:Cc:Subject:Date:From; b=C8eaLuV25D2sx3EAL3qBvXArGWJQU5ICGl4FqLWkZOaGKI+CT5XrrDt89/alcRiv3 K1E2MqWx/P9OOytiNkwljbp/qNrnj/jKvK12w4PtjMEK721HXGXLyZI979TnR5oYtC L/Q+qnhEbCQP6emqc8n24TcFRzx95Ht2ZDT/SDxxWiWryqM34rqoSyHOXZIEkM6mA8 HB3sQ0Px4zdQTU0IT5m7LW4VQWp7BWaXJ9TMs9SZU7ZYfR2/dlhRuontnMTQqIeYO8 Mll0ef3U4HBtH3Y7U9Kj47//VMoYXH9eDljyoYyiFwbuqRQaeRBfN+nXHBneT1rlq/ R8rOKR1bmailQ== 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 16:19:07 +0200 Message-Id: <20230321141907.2401089-1-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 8A34140004 X-Rspam-User: X-Stat-Signature: bno8i5g3pxggq353na69s4qyhtycyj5k X-HE-Tag: 1679408364-44706 X-HE-Meta: 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 UP/GQcxF SsEk2ILPg0pTOD4bQqzAdrD20lMCE/Z4AHbLPdpF+PI4Rbn2Wx5VuvSjMIZ+bAY5HHN7Oh7Jax3+MqhHvpPX4N/P9Qx3qVSQzg4wtJ84bTar63MKQMiZL1cFKdMKvwomATao29EGitJv/5HHIXwlVpAYFGlQZj9t8bYEdXgiwvpv96Y/NrY4+0x5xhmAFwOIRmVNn6rTyy5KTy46s9+u7X3MOeOh7bzfKoGSr5usHFvL4cGjHutE8JcsmldHlZHACp8NsEnhHRrbjULvnfWY1HjTqq9B6ixXs8p0VGvLGIcnZKlT/O9ZwU2W17jKoOwAf7VGfEjJP71XnsX5lLQ1AWKZz4xc0QIdxb4EKVAdkib9IqqA7oPrzuAKZSdgDEiSZTYezFMkaIYnyG7klGHd9SEcGlw== 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 -- 2.35.1