Gitiles
Code Review Sign In
gerrit-public.fairphone.software / kernel / msm-4.9 / edda553c324bdc5bb5c2d553b524cab37058a855 / . / include / linux / bootmem.h
blob: 81c07cd18643a81aabc4b5b9968edea9102844e3 [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-Huuf71bf0c2006-09-25 23:31:08 -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);
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);
50extern void *__alloc_bootmem_low(unsigned long size,
51 unsigned long align,
52 unsigned long goal);
53extern void *__alloc_bootmem_low_node(pg_data_t *pgdat,
54 unsigned long size,
55 unsigned long align,
56 unsigned long goal);
57extern void *__alloc_bootmem_core(struct bootmem_data *bdata,
58 unsigned long size,
Franck Bui-Huubb0923a2006-09-25 23:31:05 -0700[diff] [blame]59 unsigned long align,
Franck Bui-Huuf71bf0c2006-09-25 23:31:08 -0700[diff] [blame]60 unsigned long goal,
61 unsigned long limit);
62
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]63#ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE
Franck Bui-Huuf71bf0c2006-09-25 23:31:08 -0700[diff] [blame]64extern void reserve_bootmem(unsigned long addr, unsigned long size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]65#define alloc_bootmem(x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]66 __alloc_bootmem(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]67#define alloc_bootmem_low(x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]68 __alloc_bootmem_low(x, SMP_CACHE_BYTES, 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]69#define alloc_bootmem_pages(x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]70 __alloc_bootmem(x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]71#define alloc_bootmem_low_pages(x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]72 __alloc_bootmem_low(x, PAGE_SIZE, 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]73#endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */
Franck Bui-Huuf71bf0c2006-09-25 23:31:08 -0700[diff] [blame]74
75extern unsigned long free_all_bootmem(void);
76extern unsigned long free_all_bootmem_node(pg_data_t *pgdat);
77extern void *__alloc_bootmem_node(pg_data_t *pgdat,
78 unsigned long size,
79 unsigned long align,
80 unsigned long goal);
81extern unsigned long init_bootmem_node(pg_data_t *pgdat,
82 unsigned long freepfn,
83 unsigned long startpfn,
84 unsigned long endpfn);
85extern void reserve_bootmem_node(pg_data_t *pgdat,
86 unsigned long physaddr,
87 unsigned long size);
88extern void free_bootmem_node(pg_data_t *pgdat,
89 unsigned long addr,
90 unsigned long size);
91
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]92#ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE
93#define alloc_bootmem_node(pgdat, x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]94 __alloc_bootmem_node(pgdat, x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]95#define alloc_bootmem_pages_node(pgdat, x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]96 __alloc_bootmem_node(pgdat, x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]97#define alloc_bootmem_low_pages_node(pgdat, x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]98 __alloc_bootmem_low_node(pgdat, x, PAGE_SIZE, 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]99#endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */
100
Dave Hansen6f167ec2005-06-23 00:07:39 -0700[diff] [blame]101#ifdef CONFIG_HAVE_ARCH_ALLOC_REMAP
102extern void *alloc_remap(int nid, unsigned long size);
103#else
104static inline void *alloc_remap(int nid, unsigned long size)
105{
106 return NULL;
107}
Franck Bui-Huuf71bf0c2006-09-25 23:31:08 -0700[diff] [blame]108#endif /* CONFIG_HAVE_ARCH_ALLOC_REMAP */
Dave Hansen6f167ec2005-06-23 00:07:39 -0700[diff] [blame]109
David Howells9dec17e2006-07-10 04:44:51 -0700[diff] [blame]110extern unsigned long __meminitdata nr_kernel_pages;
David Howells8da38d72007-03-22 00:11:22 -0800[diff] [blame]111extern unsigned long __meminitdata nr_all_pages;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]112
Franck Bui-Huuf71bf0c2006-09-25 23:31:08 -0700[diff] [blame]113extern void *alloc_large_system_hash(const char *tablename,
114 unsigned long bucketsize,
115 unsigned long numentries,
116 int scale,
117 int flags,
118 unsigned int *_hash_shift,
119 unsigned int *_hash_mask,
120 unsigned long limit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]121
Andrew Morton04903662006-12-06 20:37:33 -0800[diff] [blame]122#define HASH_EARLY 0x00000001 /* Allocating during early boot? */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]123
124/* Only NUMA needs hash distribution.
125 * IA64 is known to have sufficient vmalloc space.
126 */
127#if defined(CONFIG_NUMA) && defined(CONFIG_IA64)
128#define HASHDIST_DEFAULT 1
129#else
130#define HASHDIST_DEFAULT 0
131#endif
David S. Millerf034b5d2006-08-24 03:08:07 -0700[diff] [blame]132extern int hashdist; /* Distribute hashes across NUMA nodes? */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]133
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]134
135#endif /* _LINUX_BOOTMEM_H */