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8afa901c14
The point where the memory is released from memblock to the buddy allocator is hidden inside arch-specific mem_init()s and the call to memblock_free_all() is needlessly duplicated in every artiste cure and after introduction of arch_mm_preinit() hook, mem_init() implementation on many architecture only contains the call to memblock_free_all(). Pull memblock_free_all() call into mm_core_init() and drop mem_init() on relevant architectures to make it more explicit where the free memory is released from memblock to the buddy allocator and to reduce code duplication in architecture specific code. Link: https://lkml.kernel.org/r/20250313135003.836600-14-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Acked-by: Dave Hansen <dave.hansen@linux.intel.com> [x86] Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k] Tested-by: Mark Brown <broonie@kernel.org> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Andreas Larsson <andreas@gaisler.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Betkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: David S. Miller <davem@davemloft.net> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com> Cc: Guo Ren (csky) <guoren@kernel.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Richard Weinberger <richard@nod.at> Cc: Russel King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleinxer <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vineet Gupta <vgupta@kernel.org> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
126 lines
2.7 KiB
C
126 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* linux/arch/m68k/mm/init.c
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*
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* Copyright (C) 1995 Hamish Macdonald
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*
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* Contains common initialization routines, specific init code moved
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* to motorola.c and sun3mmu.c
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*/
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#include <linux/module.h>
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#include <linux/signal.h>
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#include <linux/sched.h>
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#include <linux/mm.h>
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#include <linux/swap.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/memblock.h>
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#include <linux/gfp.h>
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#include <asm/setup.h>
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#include <linux/uaccess.h>
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#include <asm/page.h>
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#include <asm/pgalloc.h>
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#include <asm/traps.h>
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#include <asm/machdep.h>
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#include <asm/io.h>
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#ifdef CONFIG_ATARI
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#include <asm/atari_stram.h>
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#endif
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#include <asm/sections.h>
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#include <asm/tlb.h>
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/*
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* ZERO_PAGE is a special page that is used for zero-initialized
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* data and COW.
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*/
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void *empty_zero_page;
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EXPORT_SYMBOL(empty_zero_page);
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#ifdef CONFIG_MMU
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int m68k_virt_to_node_shift;
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void __init m68k_setup_node(int node)
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{
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node_set_online(node);
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}
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#else /* CONFIG_MMU */
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/*
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* paging_init() continues the virtual memory environment setup which
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* was begun by the code in arch/head.S.
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* The parameters are pointers to where to stick the starting and ending
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* addresses of available kernel virtual memory.
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*/
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void __init paging_init(void)
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{
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/*
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* Make sure start_mem is page aligned, otherwise bootmem and
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* page_alloc get different views of the world.
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*/
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unsigned long end_mem = memory_end & PAGE_MASK;
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unsigned long max_zone_pfn[MAX_NR_ZONES] = { 0, };
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high_memory = (void *) end_mem;
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empty_zero_page = memblock_alloc_or_panic(PAGE_SIZE, PAGE_SIZE);
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max_zone_pfn[ZONE_DMA] = end_mem >> PAGE_SHIFT;
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free_area_init(max_zone_pfn);
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}
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#endif /* CONFIG_MMU */
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void free_initmem(void)
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{
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#ifndef CONFIG_MMU_SUN3
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free_initmem_default(-1);
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#endif /* CONFIG_MMU_SUN3 */
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}
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#if defined(CONFIG_MMU) && !defined(CONFIG_COLDFIRE)
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#define VECTORS &vectors[0]
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#else
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#define VECTORS _ramvec
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#endif
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static inline void init_pointer_tables(void)
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{
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#if defined(CONFIG_MMU) && !defined(CONFIG_SUN3) && !defined(CONFIG_COLDFIRE)
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int i, j;
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/* insert pointer tables allocated so far into the tablelist */
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init_pointer_table(kernel_pg_dir, TABLE_PGD);
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for (i = 0; i < PTRS_PER_PGD; i++) {
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pud_t *pud = (pud_t *)&kernel_pg_dir[i];
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pmd_t *pmd_dir;
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if (!pud_present(*pud))
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continue;
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pmd_dir = (pmd_t *)pgd_page_vaddr(kernel_pg_dir[i]);
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init_pointer_table(pmd_dir, TABLE_PMD);
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for (j = 0; j < PTRS_PER_PMD; j++) {
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pmd_t *pmd = &pmd_dir[j];
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pte_t *pte_dir;
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if (!pmd_present(*pmd))
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continue;
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pte_dir = (pte_t *)pmd_page_vaddr(*pmd);
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init_pointer_table(pte_dir, TABLE_PTE);
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}
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}
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#endif
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}
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void __init mem_init(void)
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{
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init_pointer_tables();
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}
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