Release 4.15 include/linux/bootmem.h
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Discontiguous memory support, Kanoj Sarcar, SGI, Nov 1999
*/
#ifndef _LINUX_BOOTMEM_H
#define _LINUX_BOOTMEM_H
#include <linux/mmzone.h>
#include <linux/mm_types.h>
#include <asm/dma.h>
#include <asm/processor.h>
/*
* simple boot-time physical memory area allocator.
*/
extern unsigned long max_low_pfn;
extern unsigned long min_low_pfn;
/*
* highest page
*/
extern unsigned long max_pfn;
/*
* highest possible page
*/
extern unsigned long long max_possible_pfn;
#ifndef CONFIG_NO_BOOTMEM
/*
* node_bootmem_map is a map pointer - the bits represent all physical
* memory pages (including holes) on the node.
*/
typedef struct bootmem_data {
unsigned long node_min_pfn;
unsigned long node_low_pfn;
void *node_bootmem_map;
unsigned long last_end_off;
unsigned long hint_idx;
struct list_head list;
} bootmem_data_t;
extern bootmem_data_t bootmem_node_data[];
#endif
extern unsigned long bootmem_bootmap_pages(unsigned long);
extern unsigned long init_bootmem_node(pg_data_t *pgdat,
unsigned long freepfn,
unsigned long startpfn,
unsigned long endpfn);
extern unsigned long init_bootmem(unsigned long addr, unsigned long memend);
extern unsigned long free_all_bootmem(void);
extern void reset_node_managed_pages(pg_data_t *pgdat);
extern void reset_all_zones_managed_pages(void);
extern void free_bootmem_node(pg_data_t *pgdat,
unsigned long addr,
unsigned long size);
extern void free_bootmem(unsigned long physaddr, unsigned long size);
extern void free_bootmem_late(unsigned long physaddr, unsigned long size);
/*
* Flags for reserve_bootmem (also if CONFIG_HAVE_ARCH_BOOTMEM_NODE,
* the architecture-specific code should honor this).
*
* If flags is BOOTMEM_DEFAULT, then the return value is always 0 (success).
* If flags contains BOOTMEM_EXCLUSIVE, then -EBUSY is returned if the memory
* already was reserved.
*/
#define BOOTMEM_DEFAULT 0
#define BOOTMEM_EXCLUSIVE (1<<0)
extern int reserve_bootmem(unsigned long addr,
unsigned long size,
int flags);
extern int reserve_bootmem_node(pg_data_t *pgdat,
unsigned long physaddr,
unsigned long size,
int flags);
extern void *__alloc_bootmem(unsigned long size,
unsigned long align,
unsigned long goal);
extern void *__alloc_bootmem_nopanic(unsigned long size,
unsigned long align,
unsigned long goal) __malloc;
extern void *__alloc_bootmem_node(pg_data_t *pgdat,
unsigned long size,
unsigned long align,
unsigned long goal) __malloc;
void *__alloc_bootmem_node_high(pg_data_t *pgdat,
unsigned long size,
unsigned long align,
unsigned long goal) __malloc;
extern void *__alloc_bootmem_node_nopanic(pg_data_t *pgdat,
unsigned long size,
unsigned long align,
unsigned long goal) __malloc;
void *___alloc_bootmem_node_nopanic(pg_data_t *pgdat,
unsigned long size,
unsigned long align,
unsigned long goal,
unsigned long limit) __malloc;
extern void *__alloc_bootmem_low(unsigned long size,
unsigned long align,
unsigned long goal) __malloc;
void *__alloc_bootmem_low_nopanic(unsigned long size,
unsigned long align,
unsigned long goal) __malloc;
extern void *__alloc_bootmem_low_node(pg_data_t *pgdat,
unsigned long size,
unsigned long align,
unsigned long goal) __malloc;
#ifdef CONFIG_NO_BOOTMEM
/* We are using top down, so it is safe to use 0 here */
#define BOOTMEM_LOW_LIMIT 0
#else
#define BOOTMEM_LOW_LIMIT __pa(MAX_DMA_ADDRESS)
#endif
#ifndef ARCH_LOW_ADDRESS_LIMIT
#define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL
#endif
#define alloc_bootmem(x) \
__alloc_bootmem(x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT)
#define alloc_bootmem_align(x, align) \
__alloc_bootmem(x, align, BOOTMEM_LOW_LIMIT)
#define alloc_bootmem_nopanic(x) \
__alloc_bootmem_nopanic(x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT)
#define alloc_bootmem_pages(x) \
__alloc_bootmem(x, PAGE_SIZE, BOOTMEM_LOW_LIMIT)
#define alloc_bootmem_pages_nopanic(x) \
__alloc_bootmem_nopanic(x, PAGE_SIZE, BOOTMEM_LOW_LIMIT)
#define alloc_bootmem_node(pgdat, x) \
__alloc_bootmem_node(pgdat, x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT)
#define alloc_bootmem_node_nopanic(pgdat, x) \
__alloc_bootmem_node_nopanic(pgdat, x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT)
#define alloc_bootmem_pages_node(pgdat, x) \
__alloc_bootmem_node(pgdat, x, PAGE_SIZE, BOOTMEM_LOW_LIMIT)
#define alloc_bootmem_pages_node_nopanic(pgdat, x) \
__alloc_bootmem_node_nopanic(pgdat, x, PAGE_SIZE, BOOTMEM_LOW_LIMIT)
#define alloc_bootmem_low(x) \
__alloc_bootmem_low(x, SMP_CACHE_BYTES, 0)
#define alloc_bootmem_low_pages_nopanic(x) \
__alloc_bootmem_low_nopanic(x, PAGE_SIZE, 0)
#define alloc_bootmem_low_pages(x) \
__alloc_bootmem_low(x, PAGE_SIZE, 0)
#define alloc_bootmem_low_pages_node(pgdat, x) \
__alloc_bootmem_low_node(pgdat, x, PAGE_SIZE, 0)
#if defined(CONFIG_HAVE_MEMBLOCK) && defined(CONFIG_NO_BOOTMEM)
/* FIXME: use MEMBLOCK_ALLOC_* variants here */
#define BOOTMEM_ALLOC_ACCESSIBLE 0
#define BOOTMEM_ALLOC_ANYWHERE (~(phys_addr_t)0)
/* FIXME: Move to memblock.h at a point where we remove nobootmem.c */
void *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 *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);
void *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 __memblock_free_early(phys_addr_t base, phys_addr_t size);
void __memblock_free_late(phys_addr_t base, phys_addr_t size);
static inline void * __init memblock_virt_alloc(
phys_addr_t size, phys_addr_t align)
{
return memblock_virt_alloc_try_nid(size, align, BOOTMEM_LOW_LIMIT,
BOOTMEM_ALLOC_ACCESSIBLE,
NUMA_NO_NODE);
}
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static inline void * __init memblock_virt_alloc_raw(
phys_addr_t size, phys_addr_t align)
{
return memblock_virt_alloc_try_nid_raw(size, align, BOOTMEM_LOW_LIMIT,
BOOTMEM_ALLOC_ACCESSIBLE,
NUMA_NO_NODE);
}
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static inline void * __init memblock_virt_alloc_nopanic(
phys_addr_t size, phys_addr_t align)
{
return memblock_virt_alloc_try_nid_nopanic(size, align,
BOOTMEM_LOW_LIMIT,
BOOTMEM_ALLOC_ACCESSIBLE,
NUMA_NO_NODE);
}
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static inline void * __init memblock_virt_alloc_low(
phys_addr_t size, phys_addr_t align)
{
return memblock_virt_alloc_try_nid(size, align,
BOOTMEM_LOW_LIMIT,
ARCH_LOW_ADDRESS_LIMIT,
NUMA_NO_NODE);
}
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| Yinghai Lu | 29 | 100.00% | 1 | 100.00% |
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static inline void * __init memblock_virt_alloc_low_nopanic(
phys_addr_t size, phys_addr_t align)
{
return memblock_virt_alloc_try_nid_nopanic(size, align,
BOOTMEM_LOW_LIMIT,
ARCH_LOW_ADDRESS_LIMIT,
NUMA_NO_NODE);
}
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| Yinghai Lu | 29 | 100.00% | 1 | 100.00% |
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static inline void * __init memblock_virt_alloc_from_nopanic(
phys_addr_t size, phys_addr_t align, phys_addr_t min_addr)
{
return memblock_virt_alloc_try_nid_nopanic(size, align, min_addr,
BOOTMEM_ALLOC_ACCESSIBLE,
NUMA_NO_NODE);
}
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static inline void * __init memblock_virt_alloc_node(
phys_addr_t size, int nid)
{
return memblock_virt_alloc_try_nid(size, 0, BOOTMEM_LOW_LIMIT,
BOOTMEM_ALLOC_ACCESSIBLE, nid);
}
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static inline void * __init memblock_virt_alloc_node_nopanic(
phys_addr_t size, int nid)
{
return memblock_virt_alloc_try_nid_nopanic(size, 0, BOOTMEM_LOW_LIMIT,
BOOTMEM_ALLOC_ACCESSIBLE,
nid);
}
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| Santosh Shilimkar | 29 | 100.00% | 1 | 100.00% |
| Total | 29 | 100.00% | 1 | 100.00% |
static inline void __init memblock_free_early(
phys_addr_t base, phys_addr_t size)
{
__memblock_free_early(base, size);
}
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static inline void __init memblock_free_early_nid(
phys_addr_t base, phys_addr_t size, int nid)
{
__memblock_free_early(base, size);
}
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| Total | 24 | 100.00% | 1 | 100.00% |
static inline void __init memblock_free_late(
phys_addr_t base, phys_addr_t size)
{
__memblock_free_late(base, size);
}
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#else
#define BOOTMEM_ALLOC_ACCESSIBLE 0
/* Fall back to all the existing bootmem APIs */
static inline void * __init memblock_virt_alloc(
phys_addr_t size, phys_addr_t align)
{
if (!align)
align = SMP_CACHE_BYTES;
return __alloc_bootmem(size, align, BOOTMEM_LOW_LIMIT);
}
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static inline void * __init memblock_virt_alloc_raw(
phys_addr_t size, phys_addr_t align)
{
if (!align)
align = SMP_CACHE_BYTES;
return __alloc_bootmem_nopanic(size, align, BOOTMEM_LOW_LIMIT);
}
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static inline void * __init memblock_virt_alloc_nopanic(
phys_addr_t size, phys_addr_t align)
{
if (!align)
align = SMP_CACHE_BYTES;
return __alloc_bootmem_nopanic(size, align, BOOTMEM_LOW_LIMIT);
}
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| Santosh Shilimkar | 34 | 100.00% | 1 | 100.00% |
| Total | 34 | 100.00% | 1 | 100.00% |
static inline void * __init memblock_virt_alloc_low(
phys_addr_t size, phys_addr_t align)
{
if (!align)
align = SMP_CACHE_BYTES;
return __alloc_bootmem_low(size, align, 0);
}
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| Yinghai Lu | 34 | 100.00% | 2 | 100.00% |
| Total | 34 | 100.00% | 2 | 100.00% |
static inline void * __init memblock_virt_alloc_low_nopanic(
phys_addr_t size, phys_addr_t align)
{
if (!align)
align = SMP_CACHE_BYTES;
return __alloc_bootmem_low_nopanic(size, align, 0);
}
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| Yinghai Lu | 34 | 100.00% | 2 | 100.00% |
| Total | 34 | 100.00% | 2 | 100.00% |
static inline void * __init memblock_virt_alloc_from_nopanic(
phys_addr_t size, phys_addr_t align, phys_addr_t min_addr)
{
return __alloc_bootmem_nopanic(size, align, min_addr);
}
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| Santosh Shilimkar | 28 | 100.00% | 1 | 100.00% |
| Total | 28 | 100.00% | 1 | 100.00% |
static inline void * __init memblock_virt_alloc_node(
phys_addr_t size, int nid)
{
return __alloc_bootmem_node(NODE_DATA(nid), size, SMP_CACHE_BYTES,
BOOTMEM_LOW_LIMIT);
}
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| Santosh Shilimkar | 30 | 100.00% | 1 | 100.00% |
| Total | 30 | 100.00% | 1 | 100.00% |
static inline void * __init memblock_virt_alloc_node_nopanic(
phys_addr_t size, int nid)
{
return __alloc_bootmem_node_nopanic(NODE_DATA(nid), size,
SMP_CACHE_BYTES,
BOOTMEM_LOW_LIMIT);
}
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| Santosh Shilimkar | 30 | 100.00% | 1 | 100.00% |
| Total | 30 | 100.00% | 1 | 100.00% |
static inline 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)
{
return __alloc_bootmem_node_high(NODE_DATA(nid), size, align,
min_addr);
}
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| Santosh Shilimkar | 39 | 100.00% | 1 | 100.00% |
| Total | 39 | 100.00% | 1 | 100.00% |
static inline 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)
{
return ___alloc_bootmem_node_nopanic(NODE_DATA(nid), size, align,
min_addr, max_addr);
}
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| Pavel Tatashin | 41 | 100.00% | 1 | 100.00% |
| Total | 41 | 100.00% | 1 | 100.00% |
static inline 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)
{
return ___alloc_bootmem_node_nopanic(NODE_DATA(nid), size, align,
min_addr, max_addr);
}
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| Santosh Shilimkar | 41 | 100.00% | 1 | 100.00% |
| Total | 41 | 100.00% | 1 | 100.00% |
static inline void __init memblock_free_early(
phys_addr_t base, phys_addr_t size)
{
free_bootmem(base, size);
}
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| Total | 21 | 100.00% | 1 | 100.00% |
static inline void __init memblock_free_early_nid(
phys_addr_t base, phys_addr_t size, int nid)
{
free_bootmem_node(NODE_DATA(nid), base, size);
}
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| Total | 29 | 100.00% | 1 | 100.00% |
static inline void __init memblock_free_late(
phys_addr_t base, phys_addr_t size)
{
free_bootmem_late(base, size);
}
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| Santosh Shilimkar | 21 | 100.00% | 1 | 100.00% |
| Total | 21 | 100.00% | 1 | 100.00% |
#endif /* defined(CONFIG_HAVE_MEMBLOCK) && defined(CONFIG_NO_BOOTMEM) */
#ifdef CONFIG_HAVE_ARCH_ALLOC_REMAP
extern void *alloc_remap(int nid, unsigned long size);
#else
static inline void *alloc_remap(int nid, unsigned long size)
{
return NULL;
}
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#endif /* CONFIG_HAVE_ARCH_ALLOC_REMAP */
extern void *alloc_large_system_hash(const char *tablename,
unsigned long bucketsize,
unsigned long numentries,
int scale,
int flags,
unsigned int *_hash_shift,
unsigned int *_hash_mask,
unsigned long low_limit,
unsigned long high_limit);
#define HASH_EARLY 0x00000001
/* Allocating during early boot? */
#define HASH_SMALL 0x00000002
/* sub-page allocation allowed, min
* shift passed via *_hash_shift */
#define HASH_ZERO 0x00000004
/* Zero allocated hash table */
/* Only NUMA needs hash distribution. 64bit NUMA architectures have
* sufficient vmalloc space.
*/
#ifdef CONFIG_NUMA
#define HASHDIST_DEFAULT IS_ENABLED(CONFIG_64BIT)
extern int hashdist; /* Distribute hashes across NUMA nodes? */
#else
#define hashdist (0)
#endif
#endif /* _LINUX_BOOTMEM_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Santosh Shilimkar | 615 | 39.47% | 1 | 1.89% |
| Yinghai Lu | 232 | 14.89% | 8 | 15.09% |
| Linus Torvalds (pre-git) | 137 | 8.79% | 6 | 11.32% |
| Pavel Tatashin | 129 | 8.28% | 2 | 3.77% |
| Johannes Weiner | 88 | 5.65% | 4 | 7.55% |
| Rasmus Villemoes | 69 | 4.43% | 2 | 3.77% |
| Dave Hansen | 38 | 2.44% | 1 | 1.89% |
| Tejun Heo | 35 | 2.25% | 2 | 3.77% |
| David Howells | 34 | 2.18% | 1 | 1.89% |
| Ravikiran G. Thirumalai | 26 | 1.67% | 1 | 1.89% |
| Brent Casavant | 18 | 1.16% | 1 | 1.89% |
| Jan Beulich | 18 | 1.16% | 2 | 3.77% |
| Andi Kleen | 16 | 1.03% | 2 | 3.77% |
| Bernhard Walle | 12 | 0.77% | 1 | 1.89% |
| zijun_hu | 12 | 0.77% | 1 | 1.89% |
| FUJITA Tomonori | 12 | 0.77% | 1 | 1.89% |
| Tang Chen | 9 | 0.58% | 1 | 1.89% |
| Suresh B. Siddha | 9 | 0.58% | 1 | 1.89% |
| Franck Bui-Huu | 8 | 0.51% | 3 | 5.66% |
| Jiang Liu | 7 | 0.45% | 1 | 1.89% |
| Igor Mammedov | 7 | 0.45% | 1 | 1.89% |
| Linus Torvalds | 6 | 0.39% | 1 | 1.89% |
| Tim Bird | 5 | 0.32% | 1 | 1.89% |
| Kamezawa Hiroyuki | 4 | 0.26% | 1 | 1.89% |
| Andrew Morton | 4 | 0.26% | 2 | 3.77% |
| Yasunori Goto | 3 | 0.19% | 1 | 1.89% |
| JoonSoo Kim | 2 | 0.13% | 1 | 1.89% |
| Wang Sheng-Hui | 1 | 0.06% | 1 | 1.89% |
| Greg Kroah-Hartman | 1 | 0.06% | 1 | 1.89% |
| Anton Blanchard | 1 | 0.06% | 1 | 1.89% |
| Total | 1558 | 100.00% | 53 | 100.00% |
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