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include/linux/memblock.h
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#ifndef _LINUX_MEMBLOCK_H #define _LINUX_MEMBLOCK_H #ifdef __KERNEL__ /* * Logical memory blocks. * * Copyright (C) 2001 Peter Bergner, IBM Corp. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #include <linux/init.h> #include <linux/mm.h> #define MAX_MEMBLOCK_REGIONS 128 struct memblock_property { u64 base; u64 size; }; struct memblock_region { unsigned long cnt; u64 size; struct memblock_property region[MAX_MEMBLOCK_REGIONS+1]; }; struct memblock { unsigned long debug; u64 rmo_size; struct memblock_region memory; struct memblock_region reserved; }; extern struct memblock memblock; extern void __init memblock_init(void); extern void __init memblock_analyze(void); extern long memblock_add(u64 base, u64 size); extern long memblock_remove(u64 base, u64 size); extern long __init memblock_free(u64 base, u64 size); extern long __init memblock_reserve(u64 base, u64 size); extern u64 __init memblock_alloc_nid(u64 size, u64 align, int nid, u64 (*nid_range)(u64, u64, int *)); extern u64 __init memblock_alloc(u64 size, u64 align); extern u64 __init memblock_alloc_base(u64 size, u64, u64 max_addr); extern u64 __init __memblock_alloc_base(u64 size, u64 align, u64 max_addr); extern u64 __init memblock_phys_mem_size(void); extern u64 memblock_end_of_DRAM(void); extern void __init memblock_enforce_memory_limit(u64 memory_limit); extern int __init memblock_is_reserved(u64 addr); extern int memblock_is_region_reserved(u64 base, u64 size); extern int memblock_find(struct memblock_property *res); extern void memblock_dump_all(void); static inline u64 memblock_size_bytes(struct memblock_region *type, unsigned long region_nr) { return type->region[region_nr].size; } static inline u64 memblock_size_pages(struct memblock_region *type, unsigned long region_nr) { return memblock_size_bytes(type, region_nr) >> PAGE_SHIFT; } static inline u64 memblock_start_pfn(struct memblock_region *type, unsigned long region_nr) { return type->region[region_nr].base >> PAGE_SHIFT; } static inline u64 memblock_end_pfn(struct memblock_region *type, unsigned long region_nr) { return memblock_start_pfn(type, region_nr) + memblock_size_pages(type, region_nr); } #include <asm/memblock.h> #endif /* __KERNEL__ */ #endif /* _LINUX_MEMBLOCK_H */ |