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mm/memblock.c
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/* * Procedures for maintaining information about logical memory blocks. * * Peter Bergner, IBM Corp. June 2001. * Copyright (C) 2001 Peter Bergner. * * 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/kernel.h> |
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#include <linux/slab.h> |
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#include <linux/init.h> #include <linux/bitops.h> |
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#include <linux/poison.h> |
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#include <linux/pfn.h> |
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#include <linux/debugfs.h> |
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#include <linux/kmemleak.h> |
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#include <linux/seq_file.h> |
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#include <linux/memblock.h> |
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#include <linux/bootmem.h> |
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#include <asm/sections.h> |
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#include <linux/io.h> #include "internal.h" |
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/** * DOC: memblock overview * * Memblock is a method of managing memory regions during the early * boot period when the usual kernel memory allocators are not up and * running. * * Memblock views the system memory as collections of contiguous * regions. There are several types of these collections: * * * ``memory`` - describes the physical memory available to the * kernel; this may differ from the actual physical memory installed * in the system, for instance when the memory is restricted with * ``mem=`` command line parameter * * ``reserved`` - describes the regions that were allocated * * ``physmap`` - describes the actual physical memory regardless of * the possible restrictions; the ``physmap`` type is only available * on some architectures. * * Each region is represented by :c:type:`struct memblock_region` that * defines the region extents, its attributes and NUMA node id on NUMA * systems. Every memory type is described by the :c:type:`struct * memblock_type` which contains an array of memory regions along with * the allocator metadata. The memory types are nicely wrapped with * :c:type:`struct memblock`. This structure is statically initialzed * at build time. The region arrays for the "memory" and "reserved" * types are initially sized to %INIT_MEMBLOCK_REGIONS and for the * "physmap" type to %INIT_PHYSMEM_REGIONS. * The :c:func:`memblock_allow_resize` enables automatic resizing of * the region arrays during addition of new regions. This feature * should be used with care so that memory allocated for the region * array will not overlap with areas that should be reserved, for * example initrd. * * The early architecture setup should tell memblock what the physical * memory layout is by using :c:func:`memblock_add` or * :c:func:`memblock_add_node` functions. The first function does not * assign the region to a NUMA node and it is appropriate for UMA * systems. Yet, it is possible to use it on NUMA systems as well and * assign the region to a NUMA node later in the setup process using * :c:func:`memblock_set_node`. The :c:func:`memblock_add_node` * performs such an assignment directly. * * Once memblock is setup the memory can be allocated using either * memblock or bootmem APIs. * * As the system boot progresses, the architecture specific * :c:func:`mem_init` function frees all the memory to the buddy page * allocator. * * If an architecure enables %CONFIG_ARCH_DISCARD_MEMBLOCK, the * memblock data structures will be discarded after the system * initialization compltes. */ |
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static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS] __initdata_memblock; static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS] __initdata_memblock; |
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#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP static struct memblock_region memblock_physmem_init_regions[INIT_PHYSMEM_REGIONS] __initdata_memblock; #endif |
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struct memblock memblock __initdata_memblock = { .memory.regions = memblock_memory_init_regions, .memory.cnt = 1, /* empty dummy entry */ .memory.max = INIT_MEMBLOCK_REGIONS, |
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.memory.name = "memory", |
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.reserved.regions = memblock_reserved_init_regions, .reserved.cnt = 1, /* empty dummy entry */ .reserved.max = INIT_MEMBLOCK_REGIONS, |
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.reserved.name = "reserved", |
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#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP .physmem.regions = memblock_physmem_init_regions, .physmem.cnt = 1, /* empty dummy entry */ .physmem.max = INIT_PHYSMEM_REGIONS, |
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.physmem.name = "physmem", |
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#endif |
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.bottom_up = false, |
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.current_limit = MEMBLOCK_ALLOC_ANYWHERE, }; |
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int memblock_debug __initdata_memblock; |
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static bool system_has_some_mirror __initdata_memblock = false; |
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static int memblock_can_resize __initdata_memblock; |
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static int memblock_memory_in_slab __initdata_memblock = 0; static int memblock_reserved_in_slab __initdata_memblock = 0; |
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enum memblock_flags __init_memblock choose_memblock_flags(void) |
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{ return system_has_some_mirror ? MEMBLOCK_MIRROR : MEMBLOCK_NONE; } |
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/* adjust *@size so that (@base + *@size) doesn't overflow, return new size */ static inline phys_addr_t memblock_cap_size(phys_addr_t base, phys_addr_t *size) { |
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return *size = min(*size, PHYS_ADDR_MAX - base); |
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} |
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/* * Address comparison utilities */ |
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static unsigned long __init_memblock memblock_addrs_overlap(phys_addr_t base1, phys_addr_t size1, |
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phys_addr_t base2, phys_addr_t size2) |
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{ return ((base1 < (base2 + size2)) && (base2 < (base1 + size1))); } |
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bool __init_memblock memblock_overlaps_region(struct memblock_type *type, |
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phys_addr_t base, phys_addr_t size) |
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{ unsigned long i; |
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for (i = 0; i < type->cnt; i++) if (memblock_addrs_overlap(base, size, type->regions[i].base, type->regions[i].size)) |
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break; |
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return i < type->cnt; |
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} |
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/** |
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* __memblock_find_range_bottom_up - find free area utility in bottom-up * @start: start of candidate range |
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* @end: end of candidate range, can be %MEMBLOCK_ALLOC_ANYWHERE or * %MEMBLOCK_ALLOC_ACCESSIBLE |
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* @size: size of free area to find * @align: alignment of free area to find |
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* @nid: nid of the free area to find, %NUMA_NO_NODE for any node |
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* @flags: pick from blocks based on memory attributes |
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* * Utility called from memblock_find_in_range_node(), find free area bottom-up. * |
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* Return: |
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* Found address on success, 0 on failure. */ static phys_addr_t __init_memblock __memblock_find_range_bottom_up(phys_addr_t start, phys_addr_t end, |
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phys_addr_t size, phys_addr_t align, int nid, |
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enum memblock_flags flags) |
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{ phys_addr_t this_start, this_end, cand; u64 i; |
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for_each_free_mem_range(i, nid, flags, &this_start, &this_end, NULL) { |
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this_start = clamp(this_start, start, end); this_end = clamp(this_end, start, end); cand = round_up(this_start, align); if (cand < this_end && this_end - cand >= size) return cand; } return 0; } |
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/** |
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* __memblock_find_range_top_down - find free area utility, in top-down |
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* @start: start of candidate range |
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* @end: end of candidate range, can be %MEMBLOCK_ALLOC_ANYWHERE or * %MEMBLOCK_ALLOC_ACCESSIBLE |
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* @size: size of free area to find * @align: alignment of free area to find |
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* @nid: nid of the free area to find, %NUMA_NO_NODE for any node |
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* @flags: pick from blocks based on memory attributes |
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* |
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* Utility called from memblock_find_in_range_node(), find free area top-down. |
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* |
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* Return: |
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* Found address on success, 0 on failure. |
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*/ |
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static phys_addr_t __init_memblock __memblock_find_range_top_down(phys_addr_t start, phys_addr_t end, |
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phys_addr_t size, phys_addr_t align, int nid, |
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enum memblock_flags flags) |
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{ phys_addr_t this_start, this_end, cand; u64 i; |
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for_each_free_mem_range_reverse(i, nid, flags, &this_start, &this_end, NULL) { |
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this_start = clamp(this_start, start, end); this_end = clamp(this_end, start, end); if (this_end < size) continue; cand = round_down(this_end - size, align); if (cand >= this_start) return cand; } |
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return 0; } |
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/** |
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* memblock_find_in_range_node - find free area in given range and node |
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* @size: size of free area to find * @align: alignment of free area to find |
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* @start: start of candidate range |
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* @end: end of candidate range, can be %MEMBLOCK_ALLOC_ANYWHERE or * %MEMBLOCK_ALLOC_ACCESSIBLE |
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* @nid: nid of the free area to find, %NUMA_NO_NODE for any node |
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* @flags: pick from blocks based on memory attributes |
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* * Find @size free area aligned to @align in the specified range and node. * |
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* When allocation direction is bottom-up, the @start should be greater * than the end of the kernel image. Otherwise, it will be trimmed. The * reason is that we want the bottom-up allocation just near the kernel * image so it is highly likely that the allocated memory and the kernel * will reside in the same node. * * If bottom-up allocation failed, will try to allocate memory top-down. * |
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* Return: |
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* Found address on success, 0 on failure. |
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*/ |
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phys_addr_t __init_memblock memblock_find_in_range_node(phys_addr_t size, phys_addr_t align, phys_addr_t start, |
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phys_addr_t end, int nid, enum memblock_flags flags) |
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{ |
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phys_addr_t kernel_end, ret; |
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/* pump up @end */ if (end == MEMBLOCK_ALLOC_ACCESSIBLE) end = memblock.current_limit; /* avoid allocating the first page */ start = max_t(phys_addr_t, start, PAGE_SIZE); end = max(start, end); |
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kernel_end = __pa_symbol(_end); /* * try bottom-up allocation only when bottom-up mode * is set and @end is above the kernel image. */ if (memblock_bottom_up() && end > kernel_end) { phys_addr_t bottom_up_start; /* make sure we will allocate above the kernel */ bottom_up_start = max(start, kernel_end); /* ok, try bottom-up allocation first */ ret = __memblock_find_range_bottom_up(bottom_up_start, end, |
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size, align, nid, flags); |
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if (ret) return ret; /* * we always limit bottom-up allocation above the kernel, * but top-down allocation doesn't have the limit, so * retrying top-down allocation may succeed when bottom-up * allocation failed. * * bottom-up allocation is expected to be fail very rarely, * so we use WARN_ONCE() here to see the stack trace if * fail happens. */ |
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WARN_ONCE(IS_ENABLED(CONFIG_MEMORY_HOTREMOVE), "memblock: bottom-up allocation failed, memory hotremove may be affected "); |
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} |
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|
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return __memblock_find_range_top_down(start, end, size, align, nid, flags); |
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} /** |
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* memblock_find_in_range - find free area in given range * @start: start of candidate range |
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* @end: end of candidate range, can be %MEMBLOCK_ALLOC_ANYWHERE or * %MEMBLOCK_ALLOC_ACCESSIBLE |
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* @size: size of free area to find * @align: alignment of free area to find * * Find @size free area aligned to @align in the specified range. * |
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* Return: |
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* Found address on success, 0 on failure. |
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*/ |
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phys_addr_t __init_memblock memblock_find_in_range(phys_addr_t start, phys_addr_t end, phys_addr_t size, phys_addr_t align) |
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{ |
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phys_addr_t ret; |
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enum memblock_flags flags = choose_memblock_flags(); |
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again: ret = memblock_find_in_range_node(size, align, start, end, NUMA_NO_NODE, flags); if (!ret && (flags & MEMBLOCK_MIRROR)) { pr_warn("Could not allocate %pap bytes of mirrored memory ", &size); flags &= ~MEMBLOCK_MIRROR; goto again; } return ret; |
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} |
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static void __init_memblock memblock_remove_region(struct memblock_type *type, unsigned long r) |
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{ |
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type->total_size -= type->regions[r].size; |
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memmove(&type->regions[r], &type->regions[r + 1], (type->cnt - (r + 1)) * sizeof(type->regions[r])); |
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type->cnt--; |
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/* Special case for empty arrays */ if (type->cnt == 0) { |
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WARN_ON(type->total_size != 0); |
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type->cnt = 1; type->regions[0].base = 0; type->regions[0].size = 0; |
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type->regions[0].flags = 0; |
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memblock_set_region_node(&type->regions[0], MAX_NUMNODES); |
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} |
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} |
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#ifdef CONFIG_ARCH_DISCARD_MEMBLOCK |
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/** |
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* memblock_discard - discard memory and reserved arrays if they were allocated |
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*/ void __init memblock_discard(void) |
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{ |
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phys_addr_t addr, size; |
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|
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if (memblock.reserved.regions != memblock_reserved_init_regions) { addr = __pa(memblock.reserved.regions); size = PAGE_ALIGN(sizeof(struct memblock_region) * memblock.reserved.max); __memblock_free_late(addr, size); } |
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if (memblock.memory.regions != memblock_memory_init_regions) { |
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addr = __pa(memblock.memory.regions); size = PAGE_ALIGN(sizeof(struct memblock_region) * memblock.memory.max); __memblock_free_late(addr, size); } |
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} |
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#endif |
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/** * memblock_double_array - double the size of the memblock regions array * @type: memblock type of the regions array being doubled * @new_area_start: starting address of memory range to avoid overlap with * @new_area_size: size of memory range to avoid overlap with * * Double the size of the @type regions array. If memblock is being used to * allocate memory for a new reserved regions array and there is a previously |
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* allocated memory range [@new_area_start, @new_area_start + @new_area_size] |
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* waiting to be reserved, ensure the memory used by the new array does * not overlap. * |
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* Return: |
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* 0 on success, -1 on failure. */ static int __init_memblock memblock_double_array(struct memblock_type *type, phys_addr_t new_area_start, phys_addr_t new_area_size) |
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{ struct memblock_region *new_array, *old_array; |
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phys_addr_t old_alloc_size, new_alloc_size; |
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phys_addr_t old_size, new_size, addr, new_end; |
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int use_slab = slab_is_available(); |
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int *in_slab; |
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/* We don't allow resizing until we know about the reserved regions * of memory that aren't suitable for allocation */ if (!memblock_can_resize) return -1; |
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/* Calculate new doubled size */ old_size = type->max * sizeof(struct memblock_region); new_size = old_size << 1; |
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/* * We need to allocated new one align to PAGE_SIZE, * so we can free them completely later. */ old_alloc_size = PAGE_ALIGN(old_size); new_alloc_size = PAGE_ALIGN(new_size); |
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/* Retrieve the slab flag */ if (type == &memblock.memory) in_slab = &memblock_memory_in_slab; else in_slab = &memblock_reserved_in_slab; |
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/* Try to find some space for it. * * WARNING: We assume that either slab_is_available() and we use it or |
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* we use MEMBLOCK for allocations. That means that this is unsafe to * use when bootmem is currently active (unless bootmem itself is * implemented on top of MEMBLOCK which isn't the case yet) |
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* * This should however not be an issue for now, as we currently only |
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* call into MEMBLOCK while it's still active, or much later when slab * is active for memory hotplug operations |
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*/ if (use_slab) { new_array = kmalloc(new_size, GFP_KERNEL); |
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addr = new_array ? __pa(new_array) : 0; |
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} else { |
48c3b583b mm/memblock: fix ... |
423 424 425 426 427 428 |
/* only exclude range when trying to double reserved.regions */ if (type != &memblock.reserved) new_area_start = new_area_size = 0; addr = memblock_find_in_range(new_area_start + new_area_size, memblock.current_limit, |
29f673860 memblock: free al... |
429 |
new_alloc_size, PAGE_SIZE); |
48c3b583b mm/memblock: fix ... |
430 431 |
if (!addr && new_area_size) addr = memblock_find_in_range(0, |
fd07383b6 mm/memblock.c:mem... |
432 433 |
min(new_area_start, memblock.current_limit), new_alloc_size, PAGE_SIZE); |
48c3b583b mm/memblock: fix ... |
434 |
|
15674868d mm/memblock: Use ... |
435 |
new_array = addr ? __va(addr) : NULL; |
4e2f07750 mm/memblock: clea... |
436 |
} |
1f5026a7e memblock: Kill ME... |
437 |
if (!addr) { |
142b45a72 memblock: Add arr... |
438 439 |
pr_err("memblock: Failed to double %s array from %ld to %ld entries ! ", |
0262d9c84 memblock: embed m... |
440 |
type->name, type->max, type->max * 2); |
142b45a72 memblock: Add arr... |
441 442 |
return -1; } |
142b45a72 memblock: Add arr... |
443 |
|
a36aab890 mm/memblock.c: re... |
444 445 446 |
new_end = addr + new_size - 1; memblock_dbg("memblock: %s is doubled to %ld at [%pa-%pa]", type->name, type->max * 2, &addr, &new_end); |
ea9e4376b memblock: Improve... |
447 |
|
fd07383b6 mm/memblock.c:mem... |
448 449 450 451 |
/* * Found space, we now need to move the array over before we add the * reserved region since it may be our reserved array itself that is * full. |
142b45a72 memblock: Add arr... |
452 453 454 455 456 457 |
*/ memcpy(new_array, type->regions, old_size); memset(new_array + type->max, 0, old_size); old_array = type->regions; type->regions = new_array; type->max <<= 1; |
fd07383b6 mm/memblock.c:mem... |
458 |
/* Free old array. We needn't free it if the array is the static one */ |
181eb3942 mm/memblock: fix ... |
459 460 461 462 |
if (*in_slab) kfree(old_array); else if (old_array != memblock_memory_init_regions && old_array != memblock_reserved_init_regions) |
29f673860 memblock: free al... |
463 |
memblock_free(__pa(old_array), old_alloc_size); |
142b45a72 memblock: Add arr... |
464 |
|
fd07383b6 mm/memblock.c:mem... |
465 466 467 |
/* * Reserve the new array if that comes from the memblock. Otherwise, we * needn't do it |
181eb3942 mm/memblock: fix ... |
468 469 |
*/ if (!use_slab) |
29f673860 memblock: free al... |
470 |
BUG_ON(memblock_reserve(addr, new_alloc_size)); |
181eb3942 mm/memblock: fix ... |
471 472 473 |
/* Update slab flag */ *in_slab = use_slab; |
142b45a72 memblock: Add arr... |
474 475 |
return 0; } |
784656f9c memblock: Reimple... |
476 477 478 479 480 481 482 |
/** * memblock_merge_regions - merge neighboring compatible regions * @type: memblock type to scan * * Scan @type and merge neighboring compatible regions. */ static void __init_memblock memblock_merge_regions(struct memblock_type *type) |
95f72d1ed lmb: rename to me... |
483 |
{ |
784656f9c memblock: Reimple... |
484 |
int i = 0; |
95f72d1ed lmb: rename to me... |
485 |
|
784656f9c memblock: Reimple... |
486 487 488 489 |
/* cnt never goes below 1 */ while (i < type->cnt - 1) { struct memblock_region *this = &type->regions[i]; struct memblock_region *next = &type->regions[i + 1]; |
95f72d1ed lmb: rename to me... |
490 |
|
7c0caeb86 memblock: Add opt... |
491 492 |
if (this->base + this->size != next->base || memblock_get_region_node(this) != |
66a207572 memblock, numa: i... |
493 494 |
memblock_get_region_node(next) || this->flags != next->flags) { |
784656f9c memblock: Reimple... |
495 496 497 |
BUG_ON(this->base + this->size > next->base); i++; continue; |
8f7a66051 mm/memblock: prop... |
498 |
} |
784656f9c memblock: Reimple... |
499 |
this->size += next->size; |
c0232ae86 mm: memblock: fix... |
500 501 |
/* move forward from next + 1, index of which is i + 2 */ memmove(next, next + 1, (type->cnt - (i + 2)) * sizeof(*next)); |
784656f9c memblock: Reimple... |
502 |
type->cnt--; |
95f72d1ed lmb: rename to me... |
503 |
} |
784656f9c memblock: Reimple... |
504 |
} |
95f72d1ed lmb: rename to me... |
505 |
|
784656f9c memblock: Reimple... |
506 507 |
/** * memblock_insert_region - insert new memblock region |
209ff86d6 memblock: fix mis... |
508 509 510 511 512 |
* @type: memblock type to insert into * @idx: index for the insertion point * @base: base address of the new region * @size: size of the new region * @nid: node id of the new region |
66a207572 memblock, numa: i... |
513 |
* @flags: flags of the new region |
784656f9c memblock: Reimple... |
514 |
* |
47cec4432 docs/mm: memblock... |
515 |
* Insert new memblock region [@base, @base + @size) into @type at @idx. |
412d0008d mm/memblock: fix ... |
516 |
* @type must already have extra room to accommodate the new region. |
784656f9c memblock: Reimple... |
517 518 519 |
*/ static void __init_memblock memblock_insert_region(struct memblock_type *type, int idx, phys_addr_t base, |
66a207572 memblock, numa: i... |
520 |
phys_addr_t size, |
e1720fee2 mm/memblock: add ... |
521 522 |
int nid, enum memblock_flags flags) |
784656f9c memblock: Reimple... |
523 524 525 526 527 528 529 |
{ struct memblock_region *rgn = &type->regions[idx]; BUG_ON(type->cnt >= type->max); memmove(rgn + 1, rgn, (type->cnt - idx) * sizeof(*rgn)); rgn->base = base; rgn->size = size; |
66a207572 memblock, numa: i... |
530 |
rgn->flags = flags; |
7c0caeb86 memblock: Add opt... |
531 |
memblock_set_region_node(rgn, nid); |
784656f9c memblock: Reimple... |
532 |
type->cnt++; |
1440c4e2c memblock: Track t... |
533 |
type->total_size += size; |
784656f9c memblock: Reimple... |
534 535 536 |
} /** |
f1af9d3af mm/memblock: Do s... |
537 |
* memblock_add_range - add new memblock region |
784656f9c memblock: Reimple... |
538 539 540 |
* @type: memblock type to add new region into * @base: base address of the new region * @size: size of the new region |
7fb0bc3f0 memblock: Impleme... |
541 |
* @nid: nid of the new region |
66a207572 memblock, numa: i... |
542 |
* @flags: flags of the new region |
784656f9c memblock: Reimple... |
543 |
* |
47cec4432 docs/mm: memblock... |
544 |
* Add new memblock region [@base, @base + @size) into @type. The new region |
784656f9c memblock: Reimple... |
545 546 547 548 |
* is allowed to overlap with existing ones - overlaps don't affect already * existing regions. @type is guaranteed to be minimal (all neighbouring * compatible regions are merged) after the addition. * |
47cec4432 docs/mm: memblock... |
549 |
* Return: |
784656f9c memblock: Reimple... |
550 551 |
* 0 on success, -errno on failure. */ |
f1af9d3af mm/memblock: Do s... |
552 |
int __init_memblock memblock_add_range(struct memblock_type *type, |
66a207572 memblock, numa: i... |
553 |
phys_addr_t base, phys_addr_t size, |
e1720fee2 mm/memblock: add ... |
554 |
int nid, enum memblock_flags flags) |
784656f9c memblock: Reimple... |
555 556 |
{ bool insert = false; |
eb18f1b5b memblock: Make me... |
557 558 |
phys_addr_t obase = base; phys_addr_t end = base + memblock_cap_size(base, &size); |
8c9c1701c mm/memblock: intr... |
559 560 |
int idx, nr_new; struct memblock_region *rgn; |
784656f9c memblock: Reimple... |
561 |
|
b3dc627ca memblock: membloc... |
562 563 |
if (!size) return 0; |
784656f9c memblock: Reimple... |
564 565 |
/* special case for empty array */ if (type->regions[0].size == 0) { |
1440c4e2c memblock: Track t... |
566 |
WARN_ON(type->cnt != 1 || type->total_size); |
8f7a66051 mm/memblock: prop... |
567 568 |
type->regions[0].base = base; type->regions[0].size = size; |
66a207572 memblock, numa: i... |
569 |
type->regions[0].flags = flags; |
7fb0bc3f0 memblock: Impleme... |
570 |
memblock_set_region_node(&type->regions[0], nid); |
1440c4e2c memblock: Track t... |
571 |
type->total_size = size; |
8f7a66051 mm/memblock: prop... |
572 |
return 0; |
95f72d1ed lmb: rename to me... |
573 |
} |
784656f9c memblock: Reimple... |
574 575 576 577 |
repeat: /* * The following is executed twice. Once with %false @insert and * then with %true. The first counts the number of regions needed |
412d0008d mm/memblock: fix ... |
578 |
* to accommodate the new area. The second actually inserts them. |
142b45a72 memblock: Add arr... |
579 |
*/ |
784656f9c memblock: Reimple... |
580 581 |
base = obase; nr_new = 0; |
95f72d1ed lmb: rename to me... |
582 |
|
66e8b438b mm/memblock.c: ma... |
583 |
for_each_memblock_type(idx, type, rgn) { |
784656f9c memblock: Reimple... |
584 585 586 587 |
phys_addr_t rbase = rgn->base; phys_addr_t rend = rbase + rgn->size; if (rbase >= end) |
95f72d1ed lmb: rename to me... |
588 |
break; |
784656f9c memblock: Reimple... |
589 590 591 592 593 594 595 |
if (rend <= base) continue; /* * @rgn overlaps. If it separates the lower part of new * area, insert that portion. */ if (rbase > base) { |
c0a294988 mm/memblock: WARN... |
596 597 598 |
#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP WARN_ON(nid != memblock_get_region_node(rgn)); #endif |
4fcab5f43 mm/memblock.c: WA... |
599 |
WARN_ON(flags != rgn->flags); |
784656f9c memblock: Reimple... |
600 601 |
nr_new++; if (insert) |
8c9c1701c mm/memblock: intr... |
602 |
memblock_insert_region(type, idx++, base, |
66a207572 memblock, numa: i... |
603 604 |
rbase - base, nid, flags); |
95f72d1ed lmb: rename to me... |
605 |
} |
784656f9c memblock: Reimple... |
606 607 |
/* area below @rend is dealt with, forget about it */ base = min(rend, end); |
95f72d1ed lmb: rename to me... |
608 |
} |
784656f9c memblock: Reimple... |
609 610 611 612 613 |
/* insert the remaining portion */ if (base < end) { nr_new++; if (insert) |
8c9c1701c mm/memblock: intr... |
614 |
memblock_insert_region(type, idx, base, end - base, |
66a207572 memblock, numa: i... |
615 |
nid, flags); |
95f72d1ed lmb: rename to me... |
616 |
} |
95f72d1ed lmb: rename to me... |
617 |
|
ef3cc4db4 mm/memblock.c:mem... |
618 619 |
if (!nr_new) return 0; |
784656f9c memblock: Reimple... |
620 621 622 |
/* * If this was the first round, resize array and repeat for actual * insertions; otherwise, merge and return. |
142b45a72 memblock: Add arr... |
623 |
*/ |
784656f9c memblock: Reimple... |
624 625 |
if (!insert) { while (type->cnt + nr_new > type->max) |
48c3b583b mm/memblock: fix ... |
626 |
if (memblock_double_array(type, obase, size) < 0) |
784656f9c memblock: Reimple... |
627 628 629 630 631 632 |
return -ENOMEM; insert = true; goto repeat; } else { memblock_merge_regions(type); return 0; |
142b45a72 memblock: Add arr... |
633 |
} |
95f72d1ed lmb: rename to me... |
634 |
} |
48a833cc7 docs/mm: memblock... |
635 636 637 638 639 640 641 642 643 644 645 646 |
/** * memblock_add_node - add new memblock region within a NUMA node * @base: base address of the new region * @size: size of the new region * @nid: nid of the new region * * Add new memblock region [@base, @base + @size) to the "memory" * type. See memblock_add_range() description for mode details * * Return: * 0 on success, -errno on failure. */ |
7fb0bc3f0 memblock: Impleme... |
647 648 649 |
int __init_memblock memblock_add_node(phys_addr_t base, phys_addr_t size, int nid) { |
f1af9d3af mm/memblock: Do s... |
650 |
return memblock_add_range(&memblock.memory, base, size, nid, 0); |
7fb0bc3f0 memblock: Impleme... |
651 |
} |
48a833cc7 docs/mm: memblock... |
652 653 654 655 656 657 658 659 660 661 662 |
/** * memblock_add - add new memblock region * @base: base address of the new region * @size: size of the new region * * Add new memblock region [@base, @base + @size) to the "memory" * type. See memblock_add_range() description for mode details * * Return: * 0 on success, -errno on failure. */ |
f705ac4b3 mm/memblock.c: mo... |
663 |
int __init_memblock memblock_add(phys_addr_t base, phys_addr_t size) |
6a4055bc7 mm/memblock.c: ad... |
664 |
{ |
5d63f81c9 mm/memblock.c: re... |
665 666 667 668 669 |
phys_addr_t end = base + size - 1; memblock_dbg("memblock_add: [%pa-%pa] %pF ", &base, &end, (void *)_RET_IP_); |
6a4055bc7 mm/memblock.c: ad... |
670 |
|
f705ac4b3 mm/memblock.c: mo... |
671 |
return memblock_add_range(&memblock.memory, base, size, MAX_NUMNODES, 0); |
95f72d1ed lmb: rename to me... |
672 |
} |
6a9ceb31c memblock: Separat... |
673 674 675 676 677 678 679 680 681 |
/** * memblock_isolate_range - isolate given range into disjoint memblocks * @type: memblock type to isolate range for * @base: base of range to isolate * @size: size of range to isolate * @start_rgn: out parameter for the start of isolated region * @end_rgn: out parameter for the end of isolated region * * Walk @type and ensure that regions don't cross the boundaries defined by |
47cec4432 docs/mm: memblock... |
682 |
* [@base, @base + @size). Crossing regions are split at the boundaries, |
6a9ceb31c memblock: Separat... |
683 684 685 |
* which may create at most two more regions. The index of the first * region inside the range is returned in *@start_rgn and end in *@end_rgn. * |
47cec4432 docs/mm: memblock... |
686 |
* Return: |
6a9ceb31c memblock: Separat... |
687 688 689 690 691 692 |
* 0 on success, -errno on failure. */ static int __init_memblock memblock_isolate_range(struct memblock_type *type, phys_addr_t base, phys_addr_t size, int *start_rgn, int *end_rgn) { |
eb18f1b5b memblock: Make me... |
693 |
phys_addr_t end = base + memblock_cap_size(base, &size); |
8c9c1701c mm/memblock: intr... |
694 695 |
int idx; struct memblock_region *rgn; |
6a9ceb31c memblock: Separat... |
696 697 |
*start_rgn = *end_rgn = 0; |
b3dc627ca memblock: membloc... |
698 699 |
if (!size) return 0; |
6a9ceb31c memblock: Separat... |
700 701 |
/* we'll create at most two more regions */ while (type->cnt + 2 > type->max) |
48c3b583b mm/memblock: fix ... |
702 |
if (memblock_double_array(type, base, size) < 0) |
6a9ceb31c memblock: Separat... |
703 |
return -ENOMEM; |
66e8b438b mm/memblock.c: ma... |
704 |
for_each_memblock_type(idx, type, rgn) { |
6a9ceb31c memblock: Separat... |
705 706 707 708 709 710 711 712 713 714 715 716 717 718 |
phys_addr_t rbase = rgn->base; phys_addr_t rend = rbase + rgn->size; if (rbase >= end) break; if (rend <= base) continue; if (rbase < base) { /* * @rgn intersects from below. Split and continue * to process the next region - the new top half. */ rgn->base = base; |
1440c4e2c memblock: Track t... |
719 720 |
rgn->size -= base - rbase; type->total_size -= base - rbase; |
8c9c1701c mm/memblock: intr... |
721 |
memblock_insert_region(type, idx, rbase, base - rbase, |
66a207572 memblock, numa: i... |
722 723 |
memblock_get_region_node(rgn), rgn->flags); |
6a9ceb31c memblock: Separat... |
724 725 726 727 728 729 |
} else if (rend > end) { /* * @rgn intersects from above. Split and redo the * current region - the new bottom half. */ rgn->base = end; |
1440c4e2c memblock: Track t... |
730 731 |
rgn->size -= end - rbase; type->total_size -= end - rbase; |
8c9c1701c mm/memblock: intr... |
732 |
memblock_insert_region(type, idx--, rbase, end - rbase, |
66a207572 memblock, numa: i... |
733 734 |
memblock_get_region_node(rgn), rgn->flags); |
6a9ceb31c memblock: Separat... |
735 736 737 |
} else { /* @rgn is fully contained, record it */ if (!*end_rgn) |
8c9c1701c mm/memblock: intr... |
738 739 |
*start_rgn = idx; *end_rgn = idx + 1; |
6a9ceb31c memblock: Separat... |
740 741 742 743 744 |
} } return 0; } |
6a9ceb31c memblock: Separat... |
745 |
|
35bd16a22 mm/memblock: make... |
746 |
static int __init_memblock memblock_remove_range(struct memblock_type *type, |
f1af9d3af mm/memblock: Do s... |
747 |
phys_addr_t base, phys_addr_t size) |
95f72d1ed lmb: rename to me... |
748 |
{ |
719361809 memblock: Reimple... |
749 750 |
int start_rgn, end_rgn; int i, ret; |
95f72d1ed lmb: rename to me... |
751 |
|
719361809 memblock: Reimple... |
752 753 754 |
ret = memblock_isolate_range(type, base, size, &start_rgn, &end_rgn); if (ret) return ret; |
95f72d1ed lmb: rename to me... |
755 |
|
719361809 memblock: Reimple... |
756 757 |
for (i = end_rgn - 1; i >= start_rgn; i--) memblock_remove_region(type, i); |
8f7a66051 mm/memblock: prop... |
758 |
return 0; |
95f72d1ed lmb: rename to me... |
759 |
} |
581adcbe1 memblock: Make me... |
760 |
int __init_memblock memblock_remove(phys_addr_t base, phys_addr_t size) |
95f72d1ed lmb: rename to me... |
761 |
{ |
25cf23d7a mm/memblock: prin... |
762 763 764 765 766 |
phys_addr_t end = base + size - 1; memblock_dbg("memblock_remove: [%pa-%pa] %pS ", &base, &end, (void *)_RET_IP_); |
f1af9d3af mm/memblock: Do s... |
767 |
return memblock_remove_range(&memblock.memory, base, size); |
95f72d1ed lmb: rename to me... |
768 |
} |
f1af9d3af mm/memblock: Do s... |
769 |
|
581adcbe1 memblock: Make me... |
770 |
int __init_memblock memblock_free(phys_addr_t base, phys_addr_t size) |
95f72d1ed lmb: rename to me... |
771 |
{ |
5d63f81c9 mm/memblock.c: re... |
772 773 774 775 776 |
phys_addr_t end = base + size - 1; memblock_dbg(" memblock_free: [%pa-%pa] %pF ", &base, &end, (void *)_RET_IP_); |
24aa07882 memblock, x86: Re... |
777 |
|
9099daed9 mm: kmemleak: avo... |
778 |
kmemleak_free_part_phys(base, size); |
f1af9d3af mm/memblock: Do s... |
779 |
return memblock_remove_range(&memblock.reserved, base, size); |
95f72d1ed lmb: rename to me... |
780 |
} |
f705ac4b3 mm/memblock.c: mo... |
781 |
int __init_memblock memblock_reserve(phys_addr_t base, phys_addr_t size) |
95f72d1ed lmb: rename to me... |
782 |
{ |
5d63f81c9 mm/memblock.c: re... |
783 784 785 786 787 |
phys_addr_t end = base + size - 1; memblock_dbg("memblock_reserve: [%pa-%pa] %pF ", &base, &end, (void *)_RET_IP_); |
95f72d1ed lmb: rename to me... |
788 |
|
f705ac4b3 mm/memblock.c: mo... |
789 |
return memblock_add_range(&memblock.reserved, base, size, MAX_NUMNODES, 0); |
95f72d1ed lmb: rename to me... |
790 |
} |
35fd0808d memblock: Impleme... |
791 |
/** |
47cec4432 docs/mm: memblock... |
792 793 794 795 796 |
* memblock_setclr_flag - set or clear flag for a memory region * @base: base address of the region * @size: size of the region * @set: set or clear the flag * @flag: the flag to udpate |
66b16edf9 memblock, mem_hot... |
797 |
* |
4308ce17f mm/memblock.c: re... |
798 |
* This function isolates region [@base, @base + @size), and sets/clears flag |
66b16edf9 memblock, mem_hot... |
799 |
* |
47cec4432 docs/mm: memblock... |
800 |
* Return: 0 on success, -errno on failure. |
66b16edf9 memblock, mem_hot... |
801 |
*/ |
4308ce17f mm/memblock.c: re... |
802 803 |
static int __init_memblock memblock_setclr_flag(phys_addr_t base, phys_addr_t size, int set, int flag) |
66b16edf9 memblock, mem_hot... |
804 805 806 807 808 809 810 811 812 |
{ struct memblock_type *type = &memblock.memory; int i, ret, start_rgn, end_rgn; ret = memblock_isolate_range(type, base, size, &start_rgn, &end_rgn); if (ret) return ret; for (i = start_rgn; i < end_rgn; i++) |
4308ce17f mm/memblock.c: re... |
813 814 815 816 |
if (set) memblock_set_region_flags(&type->regions[i], flag); else memblock_clear_region_flags(&type->regions[i], flag); |
66b16edf9 memblock, mem_hot... |
817 818 819 820 821 822 |
memblock_merge_regions(type); return 0; } /** |
4308ce17f mm/memblock.c: re... |
823 |
* memblock_mark_hotplug - Mark hotpluggable memory with flag MEMBLOCK_HOTPLUG. |
66b16edf9 memblock, mem_hot... |
824 825 826 |
* @base: the base phys addr of the region * @size: the size of the region * |
47cec4432 docs/mm: memblock... |
827 |
* Return: 0 on success, -errno on failure. |
4308ce17f mm/memblock.c: re... |
828 829 830 831 832 833 834 835 836 837 |
*/ int __init_memblock memblock_mark_hotplug(phys_addr_t base, phys_addr_t size) { return memblock_setclr_flag(base, size, 1, MEMBLOCK_HOTPLUG); } /** * memblock_clear_hotplug - Clear flag MEMBLOCK_HOTPLUG for a specified region. * @base: the base phys addr of the region * @size: the size of the region |
66b16edf9 memblock, mem_hot... |
838 |
* |
47cec4432 docs/mm: memblock... |
839 |
* Return: 0 on success, -errno on failure. |
66b16edf9 memblock, mem_hot... |
840 841 842 |
*/ int __init_memblock memblock_clear_hotplug(phys_addr_t base, phys_addr_t size) { |
4308ce17f mm/memblock.c: re... |
843 |
return memblock_setclr_flag(base, size, 0, MEMBLOCK_HOTPLUG); |
66b16edf9 memblock, mem_hot... |
844 845 846 |
} /** |
a3f5bafcc mm/memblock: allo... |
847 848 849 850 |
* memblock_mark_mirror - Mark mirrored memory with flag MEMBLOCK_MIRROR. * @base: the base phys addr of the region * @size: the size of the region * |
47cec4432 docs/mm: memblock... |
851 |
* Return: 0 on success, -errno on failure. |
a3f5bafcc mm/memblock: allo... |
852 853 854 855 856 857 858 |
*/ int __init_memblock memblock_mark_mirror(phys_addr_t base, phys_addr_t size) { system_has_some_mirror = true; return memblock_setclr_flag(base, size, 1, MEMBLOCK_MIRROR); } |
bf3d3cc58 mm/memblock: add ... |
859 860 861 862 863 |
/** * memblock_mark_nomap - Mark a memory region with flag MEMBLOCK_NOMAP. * @base: the base phys addr of the region * @size: the size of the region * |
47cec4432 docs/mm: memblock... |
864 |
* Return: 0 on success, -errno on failure. |
bf3d3cc58 mm/memblock: add ... |
865 866 867 868 869 |
*/ int __init_memblock memblock_mark_nomap(phys_addr_t base, phys_addr_t size) { return memblock_setclr_flag(base, size, 1, MEMBLOCK_NOMAP); } |
a3f5bafcc mm/memblock: allo... |
870 871 |
/** |
4c546b8a3 memblock: add mem... |
872 873 874 875 |
* memblock_clear_nomap - Clear flag MEMBLOCK_NOMAP for a specified region. * @base: the base phys addr of the region * @size: the size of the region * |
47cec4432 docs/mm: memblock... |
876 |
* Return: 0 on success, -errno on failure. |
4c546b8a3 memblock: add mem... |
877 878 879 880 881 882 883 |
*/ int __init_memblock memblock_clear_nomap(phys_addr_t base, phys_addr_t size) { return memblock_setclr_flag(base, size, 0, MEMBLOCK_NOMAP); } /** |
8e7a7f861 memblock: introdu... |
884 885 886 887 888 889 890 891 892 893 894 |
* __next_reserved_mem_region - next function for for_each_reserved_region() * @idx: pointer to u64 loop variable * @out_start: ptr to phys_addr_t for start address of the region, can be %NULL * @out_end: ptr to phys_addr_t for end address of the region, can be %NULL * * Iterate over all reserved memory regions. */ void __init_memblock __next_reserved_mem_region(u64 *idx, phys_addr_t *out_start, phys_addr_t *out_end) { |
567d117b8 mm/memblock.c: re... |
895 |
struct memblock_type *type = &memblock.reserved; |
8e7a7f861 memblock: introdu... |
896 |
|
cd33a76b0 mm/memblock.c: re... |
897 |
if (*idx < type->cnt) { |
567d117b8 mm/memblock.c: re... |
898 |
struct memblock_region *r = &type->regions[*idx]; |
8e7a7f861 memblock: introdu... |
899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 |
phys_addr_t base = r->base; phys_addr_t size = r->size; if (out_start) *out_start = base; if (out_end) *out_end = base + size - 1; *idx += 1; return; } /* signal end of iteration */ *idx = ULLONG_MAX; } /** |
f1af9d3af mm/memblock: Do s... |
916 |
* __next__mem_range - next function for for_each_free_mem_range() etc. |
35fd0808d memblock: Impleme... |
917 |
* @idx: pointer to u64 loop variable |
b11542335 mm/memblock: swit... |
918 |
* @nid: node selector, %NUMA_NO_NODE for all nodes |
fc6daaf93 mm/memblock: add ... |
919 |
* @flags: pick from blocks based on memory attributes |
f1af9d3af mm/memblock: Do s... |
920 921 |
* @type_a: pointer to memblock_type from where the range is taken * @type_b: pointer to memblock_type which excludes memory from being taken |
dad7557eb mm: fix kernel-do... |
922 923 924 |
* @out_start: ptr to phys_addr_t for start address of the range, can be %NULL * @out_end: ptr to phys_addr_t for end address of the range, can be %NULL * @out_nid: ptr to int for nid of the range, can be %NULL |
35fd0808d memblock: Impleme... |
925 |
* |
f1af9d3af mm/memblock: Do s... |
926 |
* Find the first area from *@idx which matches @nid, fill the out |
35fd0808d memblock: Impleme... |
927 |
* parameters, and update *@idx for the next iteration. The lower 32bit of |
f1af9d3af mm/memblock: Do s... |
928 929 |
* *@idx contains index into type_a and the upper 32bit indexes the * areas before each region in type_b. For example, if type_b regions |
35fd0808d memblock: Impleme... |
930 931 932 933 934 935 936 937 938 939 940 |
* look like the following, * * 0:[0-16), 1:[32-48), 2:[128-130) * * The upper 32bit indexes the following regions. * * 0:[0-0), 1:[16-32), 2:[48-128), 3:[130-MAX) * * As both region arrays are sorted, the function advances the two indices * in lockstep and returns each intersection. */ |
e1720fee2 mm/memblock: add ... |
941 942 |
void __init_memblock __next_mem_range(u64 *idx, int nid, enum memblock_flags flags, |
f1af9d3af mm/memblock: Do s... |
943 944 945 946 |
struct memblock_type *type_a, struct memblock_type *type_b, phys_addr_t *out_start, phys_addr_t *out_end, int *out_nid) |
35fd0808d memblock: Impleme... |
947 |
{ |
f1af9d3af mm/memblock: Do s... |
948 949 |
int idx_a = *idx & 0xffffffff; int idx_b = *idx >> 32; |
b11542335 mm/memblock: swit... |
950 |
|
f1af9d3af mm/memblock: Do s... |
951 952 953 |
if (WARN_ONCE(nid == MAX_NUMNODES, "Usage of MAX_NUMNODES is deprecated. Use NUMA_NO_NODE instead ")) |
560dca27a mm/memblock: use ... |
954 |
nid = NUMA_NO_NODE; |
35fd0808d memblock: Impleme... |
955 |
|
f1af9d3af mm/memblock: Do s... |
956 957 |
for (; idx_a < type_a->cnt; idx_a++) { struct memblock_region *m = &type_a->regions[idx_a]; |
35fd0808d memblock: Impleme... |
958 959 |
phys_addr_t m_start = m->base; phys_addr_t m_end = m->base + m->size; |
f1af9d3af mm/memblock: Do s... |
960 |
int m_nid = memblock_get_region_node(m); |
35fd0808d memblock: Impleme... |
961 962 |
/* only memory regions are associated with nodes, check it */ |
f1af9d3af mm/memblock: Do s... |
963 |
if (nid != NUMA_NO_NODE && nid != m_nid) |
35fd0808d memblock: Impleme... |
964 |
continue; |
0a313a998 mem-hotplug: let ... |
965 966 967 |
/* skip hotpluggable memory regions if needed */ if (movable_node_is_enabled() && memblock_is_hotpluggable(m)) continue; |
a3f5bafcc mm/memblock: allo... |
968 969 970 |
/* if we want mirror memory skip non-mirror memory regions */ if ((flags & MEMBLOCK_MIRROR) && !memblock_is_mirror(m)) continue; |
bf3d3cc58 mm/memblock: add ... |
971 972 973 |
/* skip nomap memory unless we were asked for it explicitly */ if (!(flags & MEMBLOCK_NOMAP) && memblock_is_nomap(m)) continue; |
f1af9d3af mm/memblock: Do s... |
974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 |
if (!type_b) { if (out_start) *out_start = m_start; if (out_end) *out_end = m_end; if (out_nid) *out_nid = m_nid; idx_a++; *idx = (u32)idx_a | (u64)idx_b << 32; return; } /* scan areas before each reservation */ for (; idx_b < type_b->cnt + 1; idx_b++) { struct memblock_region *r; phys_addr_t r_start; phys_addr_t r_end; r = &type_b->regions[idx_b]; r_start = idx_b ? r[-1].base + r[-1].size : 0; r_end = idx_b < type_b->cnt ? |
1c4bc43dd mm/memblock: intr... |
995 |
r->base : PHYS_ADDR_MAX; |
35fd0808d memblock: Impleme... |
996 |
|
f1af9d3af mm/memblock: Do s... |
997 998 999 1000 |
/* * if idx_b advanced past idx_a, * break out to advance idx_a */ |
35fd0808d memblock: Impleme... |
1001 1002 1003 1004 1005 |
if (r_start >= m_end) break; /* if the two regions intersect, we're done */ if (m_start < r_end) { if (out_start) |
f1af9d3af mm/memblock: Do s... |
1006 1007 |
*out_start = max(m_start, r_start); |
35fd0808d memblock: Impleme... |
1008 1009 1010 |
if (out_end) *out_end = min(m_end, r_end); if (out_nid) |
f1af9d3af mm/memblock: Do s... |
1011 |
*out_nid = m_nid; |
35fd0808d memblock: Impleme... |
1012 |
/* |
f1af9d3af mm/memblock: Do s... |
1013 1014 |
* The region which ends first is * advanced for the next iteration. |
35fd0808d memblock: Impleme... |
1015 1016 |
*/ if (m_end <= r_end) |
f1af9d3af mm/memblock: Do s... |
1017 |
idx_a++; |
35fd0808d memblock: Impleme... |
1018 |
else |
f1af9d3af mm/memblock: Do s... |
1019 1020 |
idx_b++; *idx = (u32)idx_a | (u64)idx_b << 32; |
35fd0808d memblock: Impleme... |
1021 1022 1023 1024 1025 1026 1027 1028 |
return; } } } /* signal end of iteration */ *idx = ULLONG_MAX; } |
7bd0b0f0d memblock: Reimple... |
1029 |
/** |
f1af9d3af mm/memblock: Do s... |
1030 1031 |
* __next_mem_range_rev - generic next function for for_each_*_range_rev() * |
7bd0b0f0d memblock: Reimple... |
1032 |
* @idx: pointer to u64 loop variable |
ad5ea8cd5 mm/memblock.c: fi... |
1033 |
* @nid: node selector, %NUMA_NO_NODE for all nodes |
fc6daaf93 mm/memblock: add ... |
1034 |
* @flags: pick from blocks based on memory attributes |
f1af9d3af mm/memblock: Do s... |
1035 1036 |
* @type_a: pointer to memblock_type from where the range is taken * @type_b: pointer to memblock_type which excludes memory from being taken |
dad7557eb mm: fix kernel-do... |
1037 1038 1039 |
* @out_start: ptr to phys_addr_t for start address of the range, can be %NULL * @out_end: ptr to phys_addr_t for end address of the range, can be %NULL * @out_nid: ptr to int for nid of the range, can be %NULL |
7bd0b0f0d memblock: Reimple... |
1040 |
* |
47cec4432 docs/mm: memblock... |
1041 1042 1043 |
* Finds the next range from type_a which is not marked as unsuitable * in type_b. * |
f1af9d3af mm/memblock: Do s... |
1044 |
* Reverse of __next_mem_range(). |
7bd0b0f0d memblock: Reimple... |
1045 |
*/ |
e1720fee2 mm/memblock: add ... |
1046 1047 |
void __init_memblock __next_mem_range_rev(u64 *idx, int nid, enum memblock_flags flags, |
f1af9d3af mm/memblock: Do s... |
1048 1049 1050 1051 |
struct memblock_type *type_a, struct memblock_type *type_b, phys_addr_t *out_start, phys_addr_t *out_end, int *out_nid) |
7bd0b0f0d memblock: Reimple... |
1052 |
{ |
f1af9d3af mm/memblock: Do s... |
1053 1054 |
int idx_a = *idx & 0xffffffff; int idx_b = *idx >> 32; |
b11542335 mm/memblock: swit... |
1055 |
|
560dca27a mm/memblock: use ... |
1056 1057 1058 |
if (WARN_ONCE(nid == MAX_NUMNODES, "Usage of MAX_NUMNODES is deprecated. Use NUMA_NO_NODE instead ")) nid = NUMA_NO_NODE; |
7bd0b0f0d memblock: Reimple... |
1059 1060 |
if (*idx == (u64)ULLONG_MAX) { |
f1af9d3af mm/memblock: Do s... |
1061 |
idx_a = type_a->cnt - 1; |
e47608ab6 mm/memblock.c: fi... |
1062 1063 1064 1065 |
if (type_b != NULL) idx_b = type_b->cnt; else idx_b = 0; |
7bd0b0f0d memblock: Reimple... |
1066 |
} |
f1af9d3af mm/memblock: Do s... |
1067 1068 |
for (; idx_a >= 0; idx_a--) { struct memblock_region *m = &type_a->regions[idx_a]; |
7bd0b0f0d memblock: Reimple... |
1069 1070 |
phys_addr_t m_start = m->base; phys_addr_t m_end = m->base + m->size; |
f1af9d3af mm/memblock: Do s... |
1071 |
int m_nid = memblock_get_region_node(m); |
7bd0b0f0d memblock: Reimple... |
1072 1073 |
/* only memory regions are associated with nodes, check it */ |
f1af9d3af mm/memblock: Do s... |
1074 |
if (nid != NUMA_NO_NODE && nid != m_nid) |
7bd0b0f0d memblock: Reimple... |
1075 |
continue; |
55ac590c2 memblock, mem_hot... |
1076 1077 1078 |
/* skip hotpluggable memory regions if needed */ if (movable_node_is_enabled() && memblock_is_hotpluggable(m)) continue; |
a3f5bafcc mm/memblock: allo... |
1079 1080 1081 |
/* if we want mirror memory skip non-mirror memory regions */ if ((flags & MEMBLOCK_MIRROR) && !memblock_is_mirror(m)) continue; |
bf3d3cc58 mm/memblock: add ... |
1082 1083 1084 |
/* skip nomap memory unless we were asked for it explicitly */ if (!(flags & MEMBLOCK_NOMAP) && memblock_is_nomap(m)) continue; |
f1af9d3af mm/memblock: Do s... |
1085 1086 1087 1088 1089 1090 1091 |
if (!type_b) { if (out_start) *out_start = m_start; if (out_end) *out_end = m_end; if (out_nid) *out_nid = m_nid; |
fb399b485 mm/memblock.c: fi... |
1092 |
idx_a--; |
f1af9d3af mm/memblock: Do s... |
1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 |
*idx = (u32)idx_a | (u64)idx_b << 32; return; } /* scan areas before each reservation */ for (; idx_b >= 0; idx_b--) { struct memblock_region *r; phys_addr_t r_start; phys_addr_t r_end; r = &type_b->regions[idx_b]; r_start = idx_b ? r[-1].base + r[-1].size : 0; r_end = idx_b < type_b->cnt ? |
1c4bc43dd mm/memblock: intr... |
1106 |
r->base : PHYS_ADDR_MAX; |
f1af9d3af mm/memblock: Do s... |
1107 1108 1109 1110 |
/* * if idx_b advanced past idx_a, * break out to advance idx_a */ |
7bd0b0f0d memblock: Reimple... |
1111 |
|
7bd0b0f0d memblock: Reimple... |
1112 1113 1114 1115 1116 1117 1118 1119 1120 |
if (r_end <= m_start) break; /* if the two regions intersect, we're done */ if (m_end > r_start) { if (out_start) *out_start = max(m_start, r_start); if (out_end) *out_end = min(m_end, r_end); if (out_nid) |
f1af9d3af mm/memblock: Do s... |
1121 |
*out_nid = m_nid; |
7bd0b0f0d memblock: Reimple... |
1122 |
if (m_start >= r_start) |
f1af9d3af mm/memblock: Do s... |
1123 |
idx_a--; |
7bd0b0f0d memblock: Reimple... |
1124 |
else |
f1af9d3af mm/memblock: Do s... |
1125 1126 |
idx_b--; *idx = (u32)idx_a | (u64)idx_b << 32; |
7bd0b0f0d memblock: Reimple... |
1127 1128 1129 1130 |
return; } } } |
f1af9d3af mm/memblock: Do s... |
1131 |
/* signal end of iteration */ |
7bd0b0f0d memblock: Reimple... |
1132 1133 |
*idx = ULLONG_MAX; } |
7c0caeb86 memblock: Add opt... |
1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 |
#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP /* * Common iterator interface used to define for_each_mem_range(). */ void __init_memblock __next_mem_pfn_range(int *idx, int nid, unsigned long *out_start_pfn, unsigned long *out_end_pfn, int *out_nid) { struct memblock_type *type = &memblock.memory; struct memblock_region *r; while (++*idx < type->cnt) { r = &type->regions[*idx]; if (PFN_UP(r->base) >= PFN_DOWN(r->base + r->size)) continue; if (nid == MAX_NUMNODES || nid == r->nid) break; } if (*idx >= type->cnt) { *idx = -1; return; } if (out_start_pfn) *out_start_pfn = PFN_UP(r->base); if (out_end_pfn) *out_end_pfn = PFN_DOWN(r->base + r->size); if (out_nid) *out_nid = r->nid; } /** * memblock_set_node - set node ID on memblock regions * @base: base of area to set node ID for * @size: size of area to set node ID for |
e7e8de591 memblock: make me... |
1170 |
* @type: memblock type to set node ID for |
7c0caeb86 memblock: Add opt... |
1171 1172 |
* @nid: node ID to set * |
47cec4432 docs/mm: memblock... |
1173 |
* Set the nid of memblock @type regions in [@base, @base + @size) to @nid. |
7c0caeb86 memblock: Add opt... |
1174 1175 |
* Regions which cross the area boundaries are split as necessary. * |
47cec4432 docs/mm: memblock... |
1176 |
* Return: |
7c0caeb86 memblock: Add opt... |
1177 1178 1179 |
* 0 on success, -errno on failure. */ int __init_memblock memblock_set_node(phys_addr_t base, phys_addr_t size, |
e7e8de591 memblock: make me... |
1180 |
struct memblock_type *type, int nid) |
7c0caeb86 memblock: Add opt... |
1181 |
{ |
6a9ceb31c memblock: Separat... |
1182 1183 |
int start_rgn, end_rgn; int i, ret; |
7c0caeb86 memblock: Add opt... |
1184 |
|
6a9ceb31c memblock: Separat... |
1185 1186 1187 |
ret = memblock_isolate_range(type, base, size, &start_rgn, &end_rgn); if (ret) return ret; |
7c0caeb86 memblock: Add opt... |
1188 |
|
6a9ceb31c memblock: Separat... |
1189 |
for (i = start_rgn; i < end_rgn; i++) |
e9d24ad30 mm/memblock: use ... |
1190 |
memblock_set_region_node(&type->regions[i], nid); |
7c0caeb86 memblock: Add opt... |
1191 1192 1193 1194 1195 |
memblock_merge_regions(type); return 0; } #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */ |
2bfc2862c memblock: introdu... |
1196 1197 |
static phys_addr_t __init memblock_alloc_range_nid(phys_addr_t size, phys_addr_t align, phys_addr_t start, |
e1720fee2 mm/memblock: add ... |
1198 1199 |
phys_addr_t end, int nid, enum memblock_flags flags) |
95f72d1ed lmb: rename to me... |
1200 |
{ |
6ed311b28 memblock: Move fu... |
1201 |
phys_addr_t found; |
95f72d1ed lmb: rename to me... |
1202 |
|
79f40fab0 mm/memblock: drop... |
1203 1204 |
if (!align) align = SMP_CACHE_BYTES; |
94f3d3afb memblock: add ass... |
1205 |
|
fc6daaf93 mm/memblock: add ... |
1206 1207 |
found = memblock_find_in_range_node(size, align, start, end, nid, flags); |
aedf95ea0 mm/memblock.c: ca... |
1208 1209 1210 1211 1212 |
if (found && !memblock_reserve(found, size)) { /* * The min_count is set to 0 so that memblock allocations are * never reported as leaks. */ |
9099daed9 mm: kmemleak: avo... |
1213 |
kmemleak_alloc_phys(found, size, 0, 0); |
6ed311b28 memblock: Move fu... |
1214 |
return found; |
aedf95ea0 mm/memblock.c: ca... |
1215 |
} |
6ed311b28 memblock: Move fu... |
1216 |
return 0; |
95f72d1ed lmb: rename to me... |
1217 |
} |
2bfc2862c memblock: introdu... |
1218 |
phys_addr_t __init memblock_alloc_range(phys_addr_t size, phys_addr_t align, |
fc6daaf93 mm/memblock: add ... |
1219 |
phys_addr_t start, phys_addr_t end, |
e1720fee2 mm/memblock: add ... |
1220 |
enum memblock_flags flags) |
2bfc2862c memblock: introdu... |
1221 |
{ |
fc6daaf93 mm/memblock: add ... |
1222 1223 |
return memblock_alloc_range_nid(size, align, start, end, NUMA_NO_NODE, flags); |
2bfc2862c memblock: introdu... |
1224 |
} |
b575454fa mm: make memblock... |
1225 |
phys_addr_t __init memblock_alloc_base_nid(phys_addr_t size, |
2bfc2862c memblock: introdu... |
1226 |
phys_addr_t align, phys_addr_t max_addr, |
e1720fee2 mm/memblock: add ... |
1227 |
int nid, enum memblock_flags flags) |
2bfc2862c memblock: introdu... |
1228 |
{ |
fc6daaf93 mm/memblock: add ... |
1229 |
return memblock_alloc_range_nid(size, align, 0, max_addr, nid, flags); |
2bfc2862c memblock: introdu... |
1230 |
} |
7bd0b0f0d memblock: Reimple... |
1231 1232 |
phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid) { |
e1720fee2 mm/memblock: add ... |
1233 |
enum memblock_flags flags = choose_memblock_flags(); |
a3f5bafcc mm/memblock: allo... |
1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 |
phys_addr_t ret; again: ret = memblock_alloc_base_nid(size, align, MEMBLOCK_ALLOC_ACCESSIBLE, nid, flags); if (!ret && (flags & MEMBLOCK_MIRROR)) { flags &= ~MEMBLOCK_MIRROR; goto again; } return ret; |
7bd0b0f0d memblock: Reimple... |
1245 1246 1247 1248 |
} phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr) { |
fc6daaf93 mm/memblock: add ... |
1249 1250 |
return memblock_alloc_base_nid(size, align, max_addr, NUMA_NO_NODE, MEMBLOCK_NONE); |
7bd0b0f0d memblock: Reimple... |
1251 |
} |
6ed311b28 memblock: Move fu... |
1252 |
phys_addr_t __init memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr) |
95f72d1ed lmb: rename to me... |
1253 |
{ |
6ed311b28 memblock: Move fu... |
1254 1255 1256 1257 1258 |
phys_addr_t alloc; alloc = __memblock_alloc_base(size, align, max_addr); if (alloc == 0) |
5d63f81c9 mm/memblock.c: re... |
1259 1260 1261 |
panic("ERROR: Failed to allocate %pa bytes below %pa. ", &size, &max_addr); |
6ed311b28 memblock: Move fu... |
1262 1263 |
return alloc; |
95f72d1ed lmb: rename to me... |
1264 |
} |
6ed311b28 memblock: Move fu... |
1265 |
phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align) |
95f72d1ed lmb: rename to me... |
1266 |
{ |
6ed311b28 memblock: Move fu... |
1267 1268 |
return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ACCESSIBLE); } |
95f72d1ed lmb: rename to me... |
1269 |
|
9d1e24928 memblock: Separat... |
1270 1271 1272 1273 1274 1275 |
phys_addr_t __init memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid) { phys_addr_t res = memblock_alloc_nid(size, align, nid); if (res) return res; |
15fb09722 memblock: Use MEM... |
1276 |
return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ACCESSIBLE); |
95f72d1ed lmb: rename to me... |
1277 |
} |
193736720 mm/memblock: add ... |
1278 |
#if defined(CONFIG_NO_BOOTMEM) |
26f09e9b3 mm/memblock: add ... |
1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 |
/** * memblock_virt_alloc_internal - allocate boot memory block * @size: size of memory block to be allocated in bytes * @align: alignment of the region and block's size * @min_addr: the lower bound of the memory region to allocate (phys address) * @max_addr: the upper bound of the memory region to allocate (phys address) * @nid: nid of the free area to find, %NUMA_NO_NODE for any node * * The @min_addr limit is dropped if it can not be satisfied and the allocation * will fall back to memory below @min_addr. Also, allocation may fall back * to any node in the system if the specified node can not * hold the requested memory. * * The allocation is performed from memory region limited by * memblock.current_limit if @max_addr == %BOOTMEM_ALLOC_ACCESSIBLE. * |
47cec4432 docs/mm: memblock... |
1295 |
* The memory block is aligned on %SMP_CACHE_BYTES if @align == 0. |
26f09e9b3 mm/memblock: add ... |
1296 1297 1298 1299 1300 1301 1302 |
* * The phys address of allocated boot memory block is converted to virtual and * allocated memory is reset to 0. * * In addition, function sets the min_count to 0 using kmemleak_alloc for * allocated boot memory block, so that it is never reported as leaks. * |
47cec4432 docs/mm: memblock... |
1303 |
* Return: |
26f09e9b3 mm/memblock: add ... |
1304 1305 1306 1307 1308 1309 1310 1311 1312 |
* Virtual address of allocated memory block on success, NULL on failure. */ static void * __init memblock_virt_alloc_internal( phys_addr_t size, phys_addr_t align, phys_addr_t min_addr, phys_addr_t max_addr, int nid) { phys_addr_t alloc; void *ptr; |
e1720fee2 mm/memblock: add ... |
1313 |
enum memblock_flags flags = choose_memblock_flags(); |
26f09e9b3 mm/memblock: add ... |
1314 |
|
560dca27a mm/memblock: use ... |
1315 1316 1317 |
if (WARN_ONCE(nid == MAX_NUMNODES, "Usage of MAX_NUMNODES is deprecated. Use NUMA_NO_NODE instead ")) nid = NUMA_NO_NODE; |
26f09e9b3 mm/memblock: add ... |
1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 |
/* * Detect any accidental use of these APIs after slab is ready, as at * this moment memblock may be deinitialized already and its * internal data may be destroyed (after execution of free_all_bootmem) */ if (WARN_ON_ONCE(slab_is_available())) return kzalloc_node(size, GFP_NOWAIT, nid); if (!align) align = SMP_CACHE_BYTES; |
f544e14f3 memblock: add lim... |
1329 1330 |
if (max_addr > memblock.current_limit) max_addr = memblock.current_limit; |
26f09e9b3 mm/memblock: add ... |
1331 1332 |
again: alloc = memblock_find_in_range_node(size, align, min_addr, max_addr, |
a3f5bafcc mm/memblock: allo... |
1333 |
nid, flags); |
7d41c03e2 mm/memblock.c: ch... |
1334 |
if (alloc && !memblock_reserve(alloc, size)) |
26f09e9b3 mm/memblock: add ... |
1335 1336 1337 1338 |
goto done; if (nid != NUMA_NO_NODE) { alloc = memblock_find_in_range_node(size, align, min_addr, |
fc6daaf93 mm/memblock: add ... |
1339 |
max_addr, NUMA_NO_NODE, |
a3f5bafcc mm/memblock: allo... |
1340 |
flags); |
7d41c03e2 mm/memblock.c: ch... |
1341 |
if (alloc && !memblock_reserve(alloc, size)) |
26f09e9b3 mm/memblock: add ... |
1342 1343 1344 1345 1346 1347 |
goto done; } if (min_addr) { min_addr = 0; goto again; |
26f09e9b3 mm/memblock: add ... |
1348 |
} |
a3f5bafcc mm/memblock: allo... |
1349 1350 1351 1352 1353 1354 1355 1356 1357 |
if (flags & MEMBLOCK_MIRROR) { flags &= ~MEMBLOCK_MIRROR; pr_warn("Could not allocate %pap bytes of mirrored memory ", &size); goto again; } return NULL; |
26f09e9b3 mm/memblock: add ... |
1358 |
done: |
26f09e9b3 mm/memblock: add ... |
1359 |
ptr = phys_to_virt(alloc); |
26f09e9b3 mm/memblock: add ... |
1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 |
/* * The min_count is set to 0 so that bootmem allocated blocks * are never reported as leaks. This is because many of these blocks * are only referred via the physical address which is not * looked up by kmemleak. */ kmemleak_alloc(ptr, size, 0, 0); return ptr; |
26f09e9b3 mm/memblock: add ... |
1370 1371 1372 |
} /** |
ea1f5f371 mm: define memblo... |
1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 |
* memblock_virt_alloc_try_nid_raw - allocate boot memory block without zeroing * memory and without panicking * @size: size of memory block to be allocated in bytes * @align: alignment of the region and block's size * @min_addr: the lower bound of the memory region from where the allocation * is preferred (phys address) * @max_addr: the upper bound of the memory region from where the allocation * is preferred (phys address), or %BOOTMEM_ALLOC_ACCESSIBLE to * allocate only from memory limited by memblock.current_limit value * @nid: nid of the free area to find, %NUMA_NO_NODE for any node * * Public function, provides additional debug information (including caller * info), if enabled. Does not zero allocated memory, does not panic if request * cannot be satisfied. * |
47cec4432 docs/mm: memblock... |
1388 |
* Return: |
ea1f5f371 mm: define memblo... |
1389 1390 1391 1392 1393 1394 1395 1396 |
* Virtual address of allocated memory block on success, NULL on failure. */ void * __init memblock_virt_alloc_try_nid_raw( phys_addr_t size, phys_addr_t align, phys_addr_t min_addr, phys_addr_t max_addr, int nid) { void *ptr; |
a36aab890 mm/memblock.c: re... |
1397 1398 1399 1400 |
memblock_dbg("%s: %llu bytes align=0x%llx nid=%d from=%pa max_addr=%pa %pF ", __func__, (u64)size, (u64)align, nid, &min_addr, &max_addr, (void *)_RET_IP_); |
ea1f5f371 mm: define memblo... |
1401 1402 1403 1404 1405 |
ptr = memblock_virt_alloc_internal(size, align, min_addr, max_addr, nid); #ifdef CONFIG_DEBUG_VM if (ptr && size > 0) |
f165b378b mm: uninitialized... |
1406 |
memset(ptr, PAGE_POISON_PATTERN, size); |
ea1f5f371 mm: define memblo... |
1407 1408 1409 1410 1411 |
#endif return ptr; } /** |
26f09e9b3 mm/memblock: add ... |
1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 |
* memblock_virt_alloc_try_nid_nopanic - allocate boot memory block * @size: size of memory block to be allocated in bytes * @align: alignment of the region and block's size * @min_addr: the lower bound of the memory region from where the allocation * is preferred (phys address) * @max_addr: the upper bound of the memory region from where the allocation * is preferred (phys address), or %BOOTMEM_ALLOC_ACCESSIBLE to * allocate only from memory limited by memblock.current_limit value * @nid: nid of the free area to find, %NUMA_NO_NODE for any node * |
ea1f5f371 mm: define memblo... |
1422 1423 |
* Public function, provides additional debug information (including caller * info), if enabled. This function zeroes the allocated memory. |
26f09e9b3 mm/memblock: add ... |
1424 |
* |
47cec4432 docs/mm: memblock... |
1425 |
* Return: |
26f09e9b3 mm/memblock: add ... |
1426 1427 1428 1429 1430 1431 1432 |
* Virtual address of allocated memory block on success, NULL on failure. */ void * __init memblock_virt_alloc_try_nid_nopanic( phys_addr_t size, phys_addr_t align, phys_addr_t min_addr, phys_addr_t max_addr, int nid) { |
ea1f5f371 mm: define memblo... |
1433 |
void *ptr; |
a36aab890 mm/memblock.c: re... |
1434 1435 1436 1437 |
memblock_dbg("%s: %llu bytes align=0x%llx nid=%d from=%pa max_addr=%pa %pF ", __func__, (u64)size, (u64)align, nid, &min_addr, &max_addr, (void *)_RET_IP_); |
ea1f5f371 mm: define memblo... |
1438 1439 1440 1441 1442 1443 |
ptr = memblock_virt_alloc_internal(size, align, min_addr, max_addr, nid); if (ptr) memset(ptr, 0, size); return ptr; |
26f09e9b3 mm/memblock: add ... |
1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 |
} /** * memblock_virt_alloc_try_nid - allocate boot memory block with panicking * @size: size of memory block to be allocated in bytes * @align: alignment of the region and block's size * @min_addr: the lower bound of the memory region from where the allocation * is preferred (phys address) * @max_addr: the upper bound of the memory region from where the allocation * is preferred (phys address), or %BOOTMEM_ALLOC_ACCESSIBLE to * allocate only from memory limited by memblock.current_limit value * @nid: nid of the free area to find, %NUMA_NO_NODE for any node * |
ea1f5f371 mm: define memblo... |
1457 |
* Public panicking version of memblock_virt_alloc_try_nid_nopanic() |
26f09e9b3 mm/memblock: add ... |
1458 1459 1460 |
* which provides debug information (including caller info), if enabled, * and panics if the request can not be satisfied. * |
47cec4432 docs/mm: memblock... |
1461 |
* Return: |
26f09e9b3 mm/memblock: add ... |
1462 1463 1464 1465 1466 1467 1468 1469 |
* Virtual address of allocated memory block on success, NULL on failure. */ void * __init memblock_virt_alloc_try_nid( phys_addr_t size, phys_addr_t align, phys_addr_t min_addr, phys_addr_t max_addr, int nid) { void *ptr; |
a36aab890 mm/memblock.c: re... |
1470 1471 1472 1473 |
memblock_dbg("%s: %llu bytes align=0x%llx nid=%d from=%pa max_addr=%pa %pF ", __func__, (u64)size, (u64)align, nid, &min_addr, &max_addr, (void *)_RET_IP_); |
26f09e9b3 mm/memblock: add ... |
1474 1475 |
ptr = memblock_virt_alloc_internal(size, align, min_addr, max_addr, nid); |
ea1f5f371 mm: define memblo... |
1476 1477 |
if (ptr) { memset(ptr, 0, size); |
26f09e9b3 mm/memblock: add ... |
1478 |
return ptr; |
ea1f5f371 mm: define memblo... |
1479 |
} |
26f09e9b3 mm/memblock: add ... |
1480 |
|
a36aab890 mm/memblock.c: re... |
1481 1482 1483 |
panic("%s: Failed to allocate %llu bytes align=0x%llx nid=%d from=%pa max_addr=%pa ", __func__, (u64)size, (u64)align, nid, &min_addr, &max_addr); |
26f09e9b3 mm/memblock: add ... |
1484 1485 |
return NULL; } |
193736720 mm/memblock: add ... |
1486 |
#endif |
26f09e9b3 mm/memblock: add ... |
1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 |
/** * __memblock_free_early - free boot memory block * @base: phys starting address of the boot memory block * @size: size of the boot memory block in bytes * * Free boot memory block previously allocated by memblock_virt_alloc_xx() API. * The freeing memory will not be released to the buddy allocator. */ void __init __memblock_free_early(phys_addr_t base, phys_addr_t size) { |
a36aab890 mm/memblock.c: re... |
1498 1499 1500 1501 1502 |
phys_addr_t end = base + size - 1; memblock_dbg("%s: [%pa-%pa] %pF ", __func__, &base, &end, (void *)_RET_IP_); |
9099daed9 mm: kmemleak: avo... |
1503 |
kmemleak_free_part_phys(base, size); |
f1af9d3af mm/memblock: Do s... |
1504 |
memblock_remove_range(&memblock.reserved, base, size); |
26f09e9b3 mm/memblock: add ... |
1505 |
} |
48a833cc7 docs/mm: memblock... |
1506 |
/** |
26f09e9b3 mm/memblock: add ... |
1507 |
* __memblock_free_late - free bootmem block pages directly to buddy allocator |
48a833cc7 docs/mm: memblock... |
1508 |
* @base: phys starting address of the boot memory block |
26f09e9b3 mm/memblock: add ... |
1509 1510 1511 1512 1513 1514 1515 1516 |
* @size: size of the boot memory block in bytes * * This is only useful when the bootmem allocator has already been torn * down, but we are still initializing the system. Pages are released directly * to the buddy allocator, no bootmem metadata is updated because it is gone. */ void __init __memblock_free_late(phys_addr_t base, phys_addr_t size) { |
a36aab890 mm/memblock.c: re... |
1517 |
phys_addr_t cursor, end; |
26f09e9b3 mm/memblock: add ... |
1518 |
|
a36aab890 mm/memblock.c: re... |
1519 1520 1521 1522 |
end = base + size - 1; memblock_dbg("%s: [%pa-%pa] %pF ", __func__, &base, &end, (void *)_RET_IP_); |
9099daed9 mm: kmemleak: avo... |
1523 |
kmemleak_free_part_phys(base, size); |
26f09e9b3 mm/memblock: add ... |
1524 1525 1526 1527 |
cursor = PFN_UP(base); end = PFN_DOWN(base + size); for (; cursor < end; cursor++) { |
d70ddd7a5 mm: page_alloc: p... |
1528 |
__free_pages_bootmem(pfn_to_page(cursor), cursor, 0); |
26f09e9b3 mm/memblock: add ... |
1529 1530 1531 |
totalram_pages++; } } |
9d1e24928 memblock: Separat... |
1532 1533 1534 1535 |
/* * Remaining API functions */ |
1f1ffb8a1 memblock: don't m... |
1536 |
phys_addr_t __init_memblock memblock_phys_mem_size(void) |
95f72d1ed lmb: rename to me... |
1537 |
{ |
1440c4e2c memblock: Track t... |
1538 |
return memblock.memory.total_size; |
95f72d1ed lmb: rename to me... |
1539 |
} |
8907de5dc mm/memblock.c: ex... |
1540 1541 1542 1543 |
phys_addr_t __init_memblock memblock_reserved_size(void) { return memblock.reserved.total_size; } |
595ad9af8 memblock: Add mem... |
1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 |
phys_addr_t __init memblock_mem_size(unsigned long limit_pfn) { unsigned long pages = 0; struct memblock_region *r; unsigned long start_pfn, end_pfn; for_each_memblock(memory, r) { start_pfn = memblock_region_memory_base_pfn(r); end_pfn = memblock_region_memory_end_pfn(r); start_pfn = min_t(unsigned long, start_pfn, limit_pfn); end_pfn = min_t(unsigned long, end_pfn, limit_pfn); pages += end_pfn - start_pfn; } |
167632303 mm/memblock.c: us... |
1557 |
return PFN_PHYS(pages); |
595ad9af8 memblock: Add mem... |
1558 |
} |
0a93ebef6 memblock: add mem... |
1559 1560 1561 1562 1563 |
/* lowest address */ phys_addr_t __init_memblock memblock_start_of_DRAM(void) { return memblock.memory.regions[0].base; } |
10d064398 memblock: Option ... |
1564 |
phys_addr_t __init_memblock memblock_end_of_DRAM(void) |
95f72d1ed lmb: rename to me... |
1565 1566 |
{ int idx = memblock.memory.cnt - 1; |
e3239ff92 memblock: Rename ... |
1567 |
return (memblock.memory.regions[idx].base + memblock.memory.regions[idx].size); |
95f72d1ed lmb: rename to me... |
1568 |
} |
a571d4eb5 mm/memblock.c: ad... |
1569 |
static phys_addr_t __init_memblock __find_max_addr(phys_addr_t limit) |
95f72d1ed lmb: rename to me... |
1570 |
{ |
1c4bc43dd mm/memblock: intr... |
1571 |
phys_addr_t max_addr = PHYS_ADDR_MAX; |
136199f0a memblock: use for... |
1572 |
struct memblock_region *r; |
95f72d1ed lmb: rename to me... |
1573 |
|
a571d4eb5 mm/memblock.c: ad... |
1574 1575 1576 |
/* * translate the memory @limit size into the max address within one of * the memory memblock regions, if the @limit exceeds the total size |
1c4bc43dd mm/memblock: intr... |
1577 |
* of those regions, max_addr will keep original value PHYS_ADDR_MAX |
a571d4eb5 mm/memblock.c: ad... |
1578 |
*/ |
136199f0a memblock: use for... |
1579 |
for_each_memblock(memory, r) { |
c0ce8fef5 memblock: Reimple... |
1580 1581 1582 |
if (limit <= r->size) { max_addr = r->base + limit; break; |
95f72d1ed lmb: rename to me... |
1583 |
} |
c0ce8fef5 memblock: Reimple... |
1584 |
limit -= r->size; |
95f72d1ed lmb: rename to me... |
1585 |
} |
c0ce8fef5 memblock: Reimple... |
1586 |
|
a571d4eb5 mm/memblock.c: ad... |
1587 1588 1589 1590 1591 |
return max_addr; } void __init memblock_enforce_memory_limit(phys_addr_t limit) { |
1c4bc43dd mm/memblock: intr... |
1592 |
phys_addr_t max_addr = PHYS_ADDR_MAX; |
a571d4eb5 mm/memblock.c: ad... |
1593 1594 1595 1596 1597 1598 1599 |
if (!limit) return; max_addr = __find_max_addr(limit); /* @limit exceeds the total size of the memory, do nothing */ |
1c4bc43dd mm/memblock: intr... |
1600 |
if (max_addr == PHYS_ADDR_MAX) |
a571d4eb5 mm/memblock.c: ad... |
1601 |
return; |
c0ce8fef5 memblock: Reimple... |
1602 |
/* truncate both memory and reserved regions */ |
f1af9d3af mm/memblock: Do s... |
1603 |
memblock_remove_range(&memblock.memory, max_addr, |
1c4bc43dd mm/memblock: intr... |
1604 |
PHYS_ADDR_MAX); |
f1af9d3af mm/memblock: Do s... |
1605 |
memblock_remove_range(&memblock.reserved, max_addr, |
1c4bc43dd mm/memblock: intr... |
1606 |
PHYS_ADDR_MAX); |
95f72d1ed lmb: rename to me... |
1607 |
} |
c9ca9b4e2 memblock: add mem... |
1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 |
void __init memblock_cap_memory_range(phys_addr_t base, phys_addr_t size) { int start_rgn, end_rgn; int i, ret; if (!size) return; ret = memblock_isolate_range(&memblock.memory, base, size, &start_rgn, &end_rgn); if (ret) return; /* remove all the MAP regions */ for (i = memblock.memory.cnt - 1; i >= end_rgn; i--) if (!memblock_is_nomap(&memblock.memory.regions[i])) memblock_remove_region(&memblock.memory, i); for (i = start_rgn - 1; i >= 0; i--) if (!memblock_is_nomap(&memblock.memory.regions[i])) memblock_remove_region(&memblock.memory, i); /* truncate the reserved regions */ memblock_remove_range(&memblock.reserved, 0, base); memblock_remove_range(&memblock.reserved, |
1c4bc43dd mm/memblock: intr... |
1633 |
base + size, PHYS_ADDR_MAX); |
c9ca9b4e2 memblock: add mem... |
1634 |
} |
a571d4eb5 mm/memblock.c: ad... |
1635 1636 |
void __init memblock_mem_limit_remove_map(phys_addr_t limit) { |
a571d4eb5 mm/memblock.c: ad... |
1637 |
phys_addr_t max_addr; |
a571d4eb5 mm/memblock.c: ad... |
1638 1639 1640 1641 1642 1643 1644 |
if (!limit) return; max_addr = __find_max_addr(limit); /* @limit exceeds the total size of the memory, do nothing */ |
1c4bc43dd mm/memblock: intr... |
1645 |
if (max_addr == PHYS_ADDR_MAX) |
a571d4eb5 mm/memblock.c: ad... |
1646 |
return; |
c9ca9b4e2 memblock: add mem... |
1647 |
memblock_cap_memory_range(0, max_addr); |
a571d4eb5 mm/memblock.c: ad... |
1648 |
} |
cd79481d2 memblock: Annotat... |
1649 |
static int __init_memblock memblock_search(struct memblock_type *type, phys_addr_t addr) |
72d4b0b4e memblock: Impleme... |
1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 |
{ unsigned int left = 0, right = type->cnt; do { unsigned int mid = (right + left) / 2; if (addr < type->regions[mid].base) right = mid; else if (addr >= (type->regions[mid].base + type->regions[mid].size)) left = mid + 1; else return mid; } while (left < right); return -1; } |
b4ad0c7e0 mm/memblock.c: me... |
1666 |
bool __init memblock_is_reserved(phys_addr_t addr) |
95f72d1ed lmb: rename to me... |
1667 |
{ |
72d4b0b4e memblock: Impleme... |
1668 1669 |
return memblock_search(&memblock.reserved, addr) != -1; } |
95f72d1ed lmb: rename to me... |
1670 |
|
b4ad0c7e0 mm/memblock.c: me... |
1671 |
bool __init_memblock memblock_is_memory(phys_addr_t addr) |
72d4b0b4e memblock: Impleme... |
1672 1673 1674 |
{ return memblock_search(&memblock.memory, addr) != -1; } |
937f0c267 mm/memblock: memb... |
1675 |
bool __init_memblock memblock_is_map_memory(phys_addr_t addr) |
bf3d3cc58 mm/memblock: add ... |
1676 1677 1678 1679 1680 1681 1682 |
{ int i = memblock_search(&memblock.memory, addr); if (i == -1) return false; return !memblock_is_nomap(&memblock.memory.regions[i]); } |
e76b63f80 memblock, numa: b... |
1683 1684 1685 1686 1687 |
#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP int __init_memblock memblock_search_pfn_nid(unsigned long pfn, unsigned long *start_pfn, unsigned long *end_pfn) { struct memblock_type *type = &memblock.memory; |
167632303 mm/memblock.c: us... |
1688 |
int mid = memblock_search(type, PFN_PHYS(pfn)); |
e76b63f80 memblock, numa: b... |
1689 1690 1691 |
if (mid == -1) return -1; |
f7e2f7e89 mm/memblock.c: us... |
1692 1693 |
*start_pfn = PFN_DOWN(type->regions[mid].base); *end_pfn = PFN_DOWN(type->regions[mid].base + type->regions[mid].size); |
e76b63f80 memblock, numa: b... |
1694 1695 1696 1697 |
return type->regions[mid].nid; } #endif |
eab309494 memblock: Documen... |
1698 1699 1700 1701 1702 |
/** * memblock_is_region_memory - check if a region is a subset of memory * @base: base of region to check * @size: size of region to check * |
47cec4432 docs/mm: memblock... |
1703 |
* Check if the region [@base, @base + @size) is a subset of a memory block. |
eab309494 memblock: Documen... |
1704 |
* |
47cec4432 docs/mm: memblock... |
1705 |
* Return: |
eab309494 memblock: Documen... |
1706 1707 |
* 0 if false, non-zero if true */ |
937f0c267 mm/memblock: memb... |
1708 |
bool __init_memblock memblock_is_region_memory(phys_addr_t base, phys_addr_t size) |
72d4b0b4e memblock: Impleme... |
1709 |
{ |
abb65272a memblock: fix mem... |
1710 |
int idx = memblock_search(&memblock.memory, base); |
eb18f1b5b memblock: Make me... |
1711 |
phys_addr_t end = base + memblock_cap_size(base, &size); |
72d4b0b4e memblock: Impleme... |
1712 1713 |
if (idx == -1) |
937f0c267 mm/memblock: memb... |
1714 |
return false; |
ef415ef41 mm/memblock.c: tr... |
1715 |
return (memblock.memory.regions[idx].base + |
eb18f1b5b memblock: Make me... |
1716 |
memblock.memory.regions[idx].size) >= end; |
95f72d1ed lmb: rename to me... |
1717 |
} |
eab309494 memblock: Documen... |
1718 1719 1720 1721 1722 |
/** * memblock_is_region_reserved - check if a region intersects reserved memory * @base: base of region to check * @size: size of region to check * |
47cec4432 docs/mm: memblock... |
1723 1724 |
* Check if the region [@base, @base + @size) intersects a reserved * memory block. |
eab309494 memblock: Documen... |
1725 |
* |
47cec4432 docs/mm: memblock... |
1726 |
* Return: |
c5c5c9d10 mm/memblock.c: ma... |
1727 |
* True if they intersect, false if not. |
eab309494 memblock: Documen... |
1728 |
*/ |
c5c5c9d10 mm/memblock.c: ma... |
1729 |
bool __init_memblock memblock_is_region_reserved(phys_addr_t base, phys_addr_t size) |
95f72d1ed lmb: rename to me... |
1730 |
{ |
eb18f1b5b memblock: Make me... |
1731 |
memblock_cap_size(base, &size); |
c5c5c9d10 mm/memblock.c: ma... |
1732 |
return memblock_overlaps_region(&memblock.reserved, base, size); |
95f72d1ed lmb: rename to me... |
1733 |
} |
6ede1fd3c x86, mm: Trim mem... |
1734 1735 |
void __init_memblock memblock_trim_memory(phys_addr_t align) { |
6ede1fd3c x86, mm: Trim mem... |
1736 |
phys_addr_t start, end, orig_start, orig_end; |
136199f0a memblock: use for... |
1737 |
struct memblock_region *r; |
6ede1fd3c x86, mm: Trim mem... |
1738 |
|
136199f0a memblock: use for... |
1739 1740 1741 |
for_each_memblock(memory, r) { orig_start = r->base; orig_end = r->base + r->size; |
6ede1fd3c x86, mm: Trim mem... |
1742 1743 1744 1745 1746 1747 1748 |
start = round_up(orig_start, align); end = round_down(orig_end, align); if (start == orig_start && end == orig_end) continue; if (start < end) { |
136199f0a memblock: use for... |
1749 1750 |
r->base = start; r->size = end - start; |
6ede1fd3c x86, mm: Trim mem... |
1751 |
} else { |
136199f0a memblock: use for... |
1752 1753 1754 |
memblock_remove_region(&memblock.memory, r - memblock.memory.regions); r--; |
6ede1fd3c x86, mm: Trim mem... |
1755 1756 1757 |
} } } |
e63075a3c memblock: Introdu... |
1758 |
|
3661ca66a memblock: Fix sec... |
1759 |
void __init_memblock memblock_set_current_limit(phys_addr_t limit) |
e63075a3c memblock: Introdu... |
1760 1761 1762 |
{ memblock.current_limit = limit; } |
fec510141 ARM: 7993/1: mm/m... |
1763 1764 1765 1766 |
phys_addr_t __init_memblock memblock_get_current_limit(void) { return memblock.current_limit; } |
0262d9c84 memblock: embed m... |
1767 |
static void __init_memblock memblock_dump(struct memblock_type *type) |
6ed311b28 memblock: Move fu... |
1768 |
{ |
5d63f81c9 mm/memblock.c: re... |
1769 |
phys_addr_t base, end, size; |
e1720fee2 mm/memblock: add ... |
1770 |
enum memblock_flags flags; |
8c9c1701c mm/memblock: intr... |
1771 1772 |
int idx; struct memblock_region *rgn; |
6ed311b28 memblock: Move fu... |
1773 |
|
0262d9c84 memblock: embed m... |
1774 1775 |
pr_info(" %s.cnt = 0x%lx ", type->name, type->cnt); |
6ed311b28 memblock: Move fu... |
1776 |
|
66e8b438b mm/memblock.c: ma... |
1777 |
for_each_memblock_type(idx, type, rgn) { |
7c0caeb86 memblock: Add opt... |
1778 1779 1780 1781 |
char nid_buf[32] = ""; base = rgn->base; size = rgn->size; |
5d63f81c9 mm/memblock.c: re... |
1782 |
end = base + size - 1; |
66a207572 memblock, numa: i... |
1783 |
flags = rgn->flags; |
7c0caeb86 memblock: Add opt... |
1784 1785 1786 1787 1788 |
#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP if (memblock_get_region_node(rgn) != MAX_NUMNODES) snprintf(nid_buf, sizeof(nid_buf), " on node %d", memblock_get_region_node(rgn)); #endif |
e1720fee2 mm/memblock: add ... |
1789 1790 |
pr_info(" %s[%#x]\t[%pa-%pa], %pa bytes%s flags: %#x ", |
0262d9c84 memblock: embed m... |
1791 |
type->name, idx, &base, &end, &size, nid_buf, flags); |
6ed311b28 memblock: Move fu... |
1792 1793 |
} } |
4ff7b82f1 memblock: Add __m... |
1794 |
void __init_memblock __memblock_dump_all(void) |
6ed311b28 memblock: Move fu... |
1795 |
{ |
6ed311b28 memblock: Move fu... |
1796 1797 |
pr_info("MEMBLOCK configuration: "); |
5d63f81c9 mm/memblock.c: re... |
1798 1799 1800 1801 |
pr_info(" memory size = %pa reserved size = %pa ", &memblock.memory.total_size, &memblock.reserved.total_size); |
6ed311b28 memblock: Move fu... |
1802 |
|
0262d9c84 memblock: embed m... |
1803 1804 |
memblock_dump(&memblock.memory); memblock_dump(&memblock.reserved); |
409efd4c9 memblock: also du... |
1805 |
#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP |
0262d9c84 memblock: embed m... |
1806 |
memblock_dump(&memblock.physmem); |
409efd4c9 memblock: also du... |
1807 |
#endif |
6ed311b28 memblock: Move fu... |
1808 |
} |
1aadc0560 memblock: s/membl... |
1809 |
void __init memblock_allow_resize(void) |
6ed311b28 memblock: Move fu... |
1810 |
{ |
142b45a72 memblock: Add arr... |
1811 |
memblock_can_resize = 1; |
6ed311b28 memblock: Move fu... |
1812 |
} |
6ed311b28 memblock: Move fu... |
1813 1814 1815 1816 1817 1818 1819 |
static int __init early_memblock(char *p) { if (p && strstr(p, "debug")) memblock_debug = 1; return 0; } early_param("memblock", early_memblock); |
c378ddd53 memblock, x86: Ma... |
1820 |
#if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_ARCH_DISCARD_MEMBLOCK) |
6d03b885f memblock: Add deb... |
1821 1822 1823 1824 1825 1826 |
static int memblock_debug_show(struct seq_file *m, void *private) { struct memblock_type *type = m->private; struct memblock_region *reg; int i; |
5d63f81c9 mm/memblock.c: re... |
1827 |
phys_addr_t end; |
6d03b885f memblock: Add deb... |
1828 1829 1830 |
for (i = 0; i < type->cnt; i++) { reg = &type->regions[i]; |
5d63f81c9 mm/memblock.c: re... |
1831 |
end = reg->base + reg->size - 1; |
6d03b885f memblock: Add deb... |
1832 |
|
5d63f81c9 mm/memblock.c: re... |
1833 1834 1835 |
seq_printf(m, "%4d: ", i); seq_printf(m, "%pa..%pa ", ®->base, &end); |
6d03b885f memblock: Add deb... |
1836 1837 1838 |
} return 0; } |
5ad350936 mm: reuse DEFINE_... |
1839 |
DEFINE_SHOW_ATTRIBUTE(memblock_debug); |
6d03b885f memblock: Add deb... |
1840 1841 1842 1843 1844 1845 |
static int __init memblock_init_debugfs(void) { struct dentry *root = debugfs_create_dir("memblock", NULL); if (!root) return -ENXIO; |
0825a6f98 mm: use octal not... |
1846 1847 1848 1849 |
debugfs_create_file("memory", 0444, root, &memblock.memory, &memblock_debug_fops); debugfs_create_file("reserved", 0444, root, &memblock.reserved, &memblock_debug_fops); |
70210ed95 mm/memblock: add ... |
1850 |
#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP |
0825a6f98 mm: use octal not... |
1851 1852 |
debugfs_create_file("physmem", 0444, root, &memblock.physmem, &memblock_debug_fops); |
70210ed95 mm/memblock: add ... |
1853 |
#endif |
6d03b885f memblock: Add deb... |
1854 1855 1856 1857 1858 1859 |
return 0; } __initcall(memblock_init_debugfs); #endif /* CONFIG_DEBUG_FS */ |