1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/*
* Discontiguous memory support, Kanoj Sarcar, SGI, Nov 1999
*/
#ifndef _LINUX_BOOTMEM_H
#define _LINUX_BOOTMEM_H
#include <linux/mmzone.h>
#include <asm/dma.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;
#ifdef CONFIG_CRASH_DUMP
extern unsigned long saved_max_pfn;
#endif
/*
* 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_boot_start;
unsigned long node_low_pfn;
void *node_bootmem_map;
unsigned long last_offset;
unsigned long last_pos;
unsigned long last_success; /* Previous allocation point. To speed
* up searching */
struct list_head list;
} bootmem_data_t;
extern unsigned long bootmem_bootmap_pages(unsigned long);
extern unsigned long init_bootmem(unsigned long addr, unsigned long memend);
extern void free_bootmem(unsigned long addr, unsigned long size);
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);
extern void *__alloc_bootmem_low(unsigned long size,
unsigned long align,
unsigned long goal);
extern void *__alloc_bootmem_low_node(pg_data_t *pgdat,
unsigned long size,
unsigned long align,
unsigned long goal);
extern void *__alloc_bootmem_core(struct bootmem_data *bdata,
unsigned long size,
unsigned long align,
unsigned long goal,
unsigned long limit);
extern void *alloc_bootmem_high_node(pg_data_t *pgdat, unsigned long size);
#ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE
extern void reserve_bootmem(unsigned long addr, unsigned long size);
#define alloc_bootmem(x) \
__alloc_bootmem(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
#define alloc_bootmem_low(x) \
__alloc_bootmem_low(x, SMP_CACHE_BYTES, 0)
#define alloc_bootmem_pages(x) \
__alloc_bootmem(x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
#define alloc_bootmem_low_pages(x) \
__alloc_bootmem_low(x, PAGE_SIZE, 0)
#endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */
extern unsigned long free_all_bootmem(void);
extern unsigned long free_all_bootmem_node(pg_data_t *pgdat);
extern void *__alloc_bootmem_node(pg_data_t *pgdat,
unsigned long size,
unsigned long align,
unsigned long goal);
extern unsigned long init_bootmem_node(pg_data_t *pgdat,
unsigned long freepfn,
unsigned long startpfn,
unsigned long endpfn);
extern void reserve_bootmem_node(pg_data_t *pgdat,
unsigned long physaddr,
unsigned long size);
extern void free_bootmem_node(pg_data_t *pgdat,
unsigned long addr,
unsigned long size);
#ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE
#define alloc_bootmem_node(pgdat, x) \
__alloc_bootmem_node(pgdat, x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
#define alloc_bootmem_pages_node(pgdat, x) \
__alloc_bootmem_node(pgdat, x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
#define alloc_bootmem_low_pages_node(pgdat, x) \
__alloc_bootmem_low_node(pgdat, x, PAGE_SIZE, 0)
#endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */
#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;
}
#endif /* CONFIG_HAVE_ARCH_ALLOC_REMAP */
extern unsigned long __meminitdata nr_kernel_pages;
extern unsigned long __meminitdata nr_all_pages;
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 limit);
#define HASH_EARLY 0x00000001 /* Allocating during early boot? */
/* Only NUMA needs hash distribution.
* IA64 and x86_64 have sufficient vmalloc space.
*/
#if defined(CONFIG_NUMA) && (defined(CONFIG_IA64) || defined(CONFIG_X86_64))
#define HASHDIST_DEFAULT 1
#else
#define HASHDIST_DEFAULT 0
#endif
extern int hashdist; /* Distribute hashes across NUMA nodes? */
#endif /* _LINUX_BOOTMEM_H */
|
