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Date: Tue, 21 Mar 2023 19:04:59 +0200
From: Mike Rapoport <rppt@...nel.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: David Hildenbrand <david@...hat.com>,
Doug Berger <opendmb@...il.com>,
Matthew Wilcox <willy@...radead.org>,
Mel Gorman <mgorman@...e.de>, Michal Hocko <mhocko@...nel.org>,
Mike Rapoport <rppt@...nel.org>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
Vlastimil Babka <vbabka@...e.cz>, linux-kernel@...r.kernel.org,
linux-mips@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH v2 00/14] mm: move core MM initialization to mm/mm_init.c
From: "Mike Rapoport (IBM)" <rppt@...nel.org>
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
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