Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Discontiguous memory support, Kanoj Sarcar, SGI, Nov 1999 | |
3 | */ | |
4 | #ifndef _LINUX_BOOTMEM_H | |
5 | #define _LINUX_BOOTMEM_H | |
6 | ||
7 | #include <asm/pgtable.h> | |
8 | #include <asm/dma.h> | |
9 | #include <linux/cache.h> | |
10 | #include <linux/init.h> | |
11 | #include <linux/mmzone.h> | |
12 | ||
13 | /* | |
14 | * simple boot-time physical memory area allocator. | |
15 | */ | |
16 | ||
17 | extern unsigned long max_low_pfn; | |
18 | extern unsigned long min_low_pfn; | |
19 | ||
20 | /* | |
21 | * highest page | |
22 | */ | |
23 | extern unsigned long max_pfn; | |
24 | ||
25 | /* | |
26 | * node_bootmem_map is a map pointer - the bits represent all physical | |
27 | * memory pages (including holes) on the node. | |
28 | */ | |
29 | typedef struct bootmem_data { | |
30 | unsigned long node_boot_start; | |
31 | unsigned long node_low_pfn; | |
32 | void *node_bootmem_map; | |
33 | unsigned long last_offset; | |
34 | unsigned long last_pos; | |
35 | unsigned long last_success; /* Previous allocation point. To speed | |
36 | * up searching */ | |
37 | } bootmem_data_t; | |
38 | ||
39 | extern unsigned long __init bootmem_bootmap_pages (unsigned long); | |
40 | extern unsigned long __init init_bootmem (unsigned long addr, unsigned long memend); | |
41 | extern void __init free_bootmem (unsigned long addr, unsigned long size); | |
42 | extern void * __init __alloc_bootmem (unsigned long size, unsigned long align, unsigned long goal); | |
43 | #ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE | |
44 | extern void __init reserve_bootmem (unsigned long addr, unsigned long size); | |
45 | #define alloc_bootmem(x) \ | |
46 | __alloc_bootmem((x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS)) | |
47 | #define alloc_bootmem_low(x) \ | |
48 | __alloc_bootmem((x), SMP_CACHE_BYTES, 0) | |
49 | #define alloc_bootmem_pages(x) \ | |
50 | __alloc_bootmem((x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS)) | |
51 | #define alloc_bootmem_low_pages(x) \ | |
52 | __alloc_bootmem((x), PAGE_SIZE, 0) | |
53 | #endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */ | |
54 | extern unsigned long __init free_all_bootmem (void); | |
55 | ||
56 | extern unsigned long __init init_bootmem_node (pg_data_t *pgdat, unsigned long freepfn, unsigned long startpfn, unsigned long endpfn); | |
57 | extern void __init reserve_bootmem_node (pg_data_t *pgdat, unsigned long physaddr, unsigned long size); | |
58 | extern void __init free_bootmem_node (pg_data_t *pgdat, unsigned long addr, unsigned long size); | |
59 | extern unsigned long __init free_all_bootmem_node (pg_data_t *pgdat); | |
60 | extern void * __init __alloc_bootmem_node (pg_data_t *pgdat, unsigned long size, unsigned long align, unsigned long goal); | |
61 | #ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE | |
62 | #define alloc_bootmem_node(pgdat, x) \ | |
63 | __alloc_bootmem_node((pgdat), (x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS)) | |
64 | #define alloc_bootmem_pages_node(pgdat, x) \ | |
65 | __alloc_bootmem_node((pgdat), (x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS)) | |
66 | #define alloc_bootmem_low_pages_node(pgdat, x) \ | |
67 | __alloc_bootmem_node((pgdat), (x), PAGE_SIZE, 0) | |
68 | #endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */ | |
69 | ||
70 | extern unsigned long __initdata nr_kernel_pages; | |
71 | extern unsigned long __initdata nr_all_pages; | |
72 | ||
73 | extern void *__init alloc_large_system_hash(const char *tablename, | |
74 | unsigned long bucketsize, | |
75 | unsigned long numentries, | |
76 | int scale, | |
77 | int flags, | |
78 | unsigned int *_hash_shift, | |
79 | unsigned int *_hash_mask, | |
80 | unsigned long limit); | |
81 | ||
82 | #define HASH_HIGHMEM 0x00000001 /* Consider highmem? */ | |
83 | #define HASH_EARLY 0x00000002 /* Allocating during early boot? */ | |
84 | ||
85 | /* Only NUMA needs hash distribution. | |
86 | * IA64 is known to have sufficient vmalloc space. | |
87 | */ | |
88 | #if defined(CONFIG_NUMA) && defined(CONFIG_IA64) | |
89 | #define HASHDIST_DEFAULT 1 | |
90 | #else | |
91 | #define HASHDIST_DEFAULT 0 | |
92 | #endif | |
93 | extern int __initdata hashdist; /* Distribute hashes across NUMA nodes? */ | |
94 | ||
95 | ||
96 | #endif /* _LINUX_BOOTMEM_H */ |