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gerrit-public.fairphone.software / kernel / msm-4.9 / bbc7b92e337ac349ca917f9bf0b6be4743c14f3a / . / include / linux / bootmem.h
blob: b2067e4a44860bce8c5e5a10ae0d5e8c08a38b57 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1/*
2 * Discontiguous memory support, Kanoj Sarcar, SGI, Nov 1999
3 */
4#ifndef _LINUX_BOOTMEM_H
5#define _LINUX_BOOTMEM_H
6
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]7#include <linux/mmzone.h>
Franck Bui-Huue786e862006-09-25 23:31:06 -0700[diff] [blame]8#include <asm/dma.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]9
10/*
11 * simple boot-time physical memory area allocator.
12 */
13
14extern unsigned long max_low_pfn;
15extern unsigned long min_low_pfn;
16
17/*
18 * highest page
19 */
20extern unsigned long max_pfn;
21
Vivek Goyal92aa63a2005-06-25 14:58:18 -0700[diff] [blame]22#ifdef CONFIG_CRASH_DUMP
23extern unsigned long saved_max_pfn;
24#endif
25
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]26/*
27 * node_bootmem_map is a map pointer - the bits represent all physical
28 * memory pages (including holes) on the node.
29 */
30typedef struct bootmem_data {
31 unsigned long node_boot_start;
32 unsigned long node_low_pfn;
33 void *node_bootmem_map;
34 unsigned long last_offset;
35 unsigned long last_pos;
36 unsigned long last_success; /* Previous allocation point. To speed
37 * up searching */
KAMEZAWA Hiroyuki679bc9f2006-03-27 01:15:58 -0800[diff] [blame]38 struct list_head list;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]39} bootmem_data_t;
40
Franck Bui-Huu2d1a07d2006-09-25 23:31:03 -0700[diff] [blame]41extern unsigned long bootmem_bootmap_pages (unsigned long);
42extern unsigned long init_bootmem (unsigned long addr, unsigned long memend);
43extern void free_bootmem (unsigned long addr, unsigned long size);
Franck Bui-Huubb0923a2006-09-25 23:31:05 -0700[diff] [blame]44extern void * __alloc_bootmem (unsigned long size,
45 unsigned long align,
46 unsigned long goal);
47extern void * __alloc_bootmem_nopanic (unsigned long size,
48 unsigned long align,
49 unsigned long goal);
Franck Bui-Huu2d1a07d2006-09-25 23:31:03 -0700[diff] [blame]50extern void * __alloc_bootmem_low(unsigned long size,
Franck Bui-Huubb0923a2006-09-25 23:31:05 -0700[diff] [blame]51 unsigned long align,
52 unsigned long goal);
Franck Bui-Huu2d1a07d2006-09-25 23:31:03 -0700[diff] [blame]53extern void * __alloc_bootmem_low_node(pg_data_t *pgdat,
Franck Bui-Huubb0923a2006-09-25 23:31:05 -0700[diff] [blame]54 unsigned long size,
55 unsigned long align,
56 unsigned long goal);
Franck Bui-Huu2d1a07d2006-09-25 23:31:03 -0700[diff] [blame]57extern void * __alloc_bootmem_core(struct bootmem_data *bdata,
Franck Bui-Huubb0923a2006-09-25 23:31:05 -0700[diff] [blame]58 unsigned long size,
59 unsigned long align,
60 unsigned long goal,
61 unsigned long limit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]62#ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE
Franck Bui-Huu2d1a07d2006-09-25 23:31:03 -0700[diff] [blame]63extern void reserve_bootmem (unsigned long addr, unsigned long size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]64#define alloc_bootmem(x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]65 __alloc_bootmem(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]66#define alloc_bootmem_low(x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]67 __alloc_bootmem_low(x, SMP_CACHE_BYTES, 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]68#define alloc_bootmem_pages(x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]69 __alloc_bootmem(x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]70#define alloc_bootmem_low_pages(x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]71 __alloc_bootmem_low(x, PAGE_SIZE, 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]72#endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */
Franck Bui-Huu2d1a07d2006-09-25 23:31:03 -0700[diff] [blame]73extern unsigned long free_all_bootmem (void);
Franck Bui-Huubb0923a2006-09-25 23:31:05 -0700[diff] [blame]74extern void * __alloc_bootmem_node (pg_data_t *pgdat,
75 unsigned long size,
76 unsigned long align,
77 unsigned long goal);
78extern unsigned long init_bootmem_node (pg_data_t *pgdat,
79 unsigned long freepfn,
80 unsigned long startpfn,
81 unsigned long endpfn);
82extern void reserve_bootmem_node (pg_data_t *pgdat,
83 unsigned long physaddr,
84 unsigned long size);
85extern void free_bootmem_node (pg_data_t *pgdat,
86 unsigned long addr,
87 unsigned long size);
Franck Bui-Huu2d1a07d2006-09-25 23:31:03 -0700[diff] [blame]88extern unsigned long free_all_bootmem_node (pg_data_t *pgdat);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]89#ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE
90#define alloc_bootmem_node(pgdat, x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]91 __alloc_bootmem_node(pgdat, x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]92#define alloc_bootmem_pages_node(pgdat, x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]93 __alloc_bootmem_node(pgdat, x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]94#define alloc_bootmem_low_pages_node(pgdat, x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]95 __alloc_bootmem_low_node(pgdat, x, PAGE_SIZE, 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]96#endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */
97
Dave Hansen6f167ec2005-06-23 00:07:39 -0700[diff] [blame]98#ifdef CONFIG_HAVE_ARCH_ALLOC_REMAP
99extern void *alloc_remap(int nid, unsigned long size);
100#else
101static inline void *alloc_remap(int nid, unsigned long size)
102{
103 return NULL;
104}
105#endif
106
David Howells9dec17e2006-07-10 04:44:51 -0700[diff] [blame]107extern unsigned long __meminitdata nr_kernel_pages;
Yasunori Goto86356ab2006-06-23 02:03:09 -0700[diff] [blame]108extern unsigned long nr_all_pages;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]109
Franck Bui-Huu2d1a07d2006-09-25 23:31:03 -0700[diff] [blame]110extern void * alloc_large_system_hash(const char *tablename,
111 unsigned long bucketsize,
112 unsigned long numentries,
113 int scale,
114 int flags,
115 unsigned int *_hash_shift,
116 unsigned int *_hash_mask,
117 unsigned long limit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]118
119#define HASH_HIGHMEM 0x00000001 /* Consider highmem? */
120#define HASH_EARLY 0x00000002 /* Allocating during early boot? */
121
122/* Only NUMA needs hash distribution.
123 * IA64 is known to have sufficient vmalloc space.
124 */
125#if defined(CONFIG_NUMA) && defined(CONFIG_IA64)
126#define HASHDIST_DEFAULT 1
127#else
128#define HASHDIST_DEFAULT 0
129#endif
David S. Millerf034b5d2006-08-24 03:08:07 -0700[diff] [blame]130extern int hashdist; /* Distribute hashes across NUMA nodes? */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]131
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]132
133#endif /* _LINUX_BOOTMEM_H */