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gerrit-public.fairphone.software / kernel / msm-4.9 / 75683fe7153c3817bb4fd4491e2a5913af6c463e / . / include / linux / bootmem.h
blob: c83534ee1e796c46b2cc47c129ad3924cedbeb20 [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);
Zou Nan hai2e1c49d2007-06-01 00:46:28 -0700[diff] [blame]62extern void *alloc_bootmem_high_node(pg_data_t *pgdat, unsigned long size);
Franck Bui-Huuf71bf0c2006-09-25 23:31:08 -0700[diff] [blame]63
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]64#ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE
Franck Bui-Huuf71bf0c2006-09-25 23:31:08 -0700[diff] [blame]65extern void reserve_bootmem(unsigned long addr, unsigned long size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]66#define alloc_bootmem(x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]67 __alloc_bootmem(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]68#define alloc_bootmem_low(x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]69 __alloc_bootmem_low(x, SMP_CACHE_BYTES, 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]70#define alloc_bootmem_pages(x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]71 __alloc_bootmem(x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]72#define alloc_bootmem_low_pages(x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]73 __alloc_bootmem_low(x, PAGE_SIZE, 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]74#endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */
Franck Bui-Huuf71bf0c2006-09-25 23:31:08 -0700[diff] [blame]75
76extern unsigned long free_all_bootmem(void);
77extern unsigned long free_all_bootmem_node(pg_data_t *pgdat);
78extern void *__alloc_bootmem_node(pg_data_t *pgdat,
79 unsigned long size,
80 unsigned long align,
81 unsigned long goal);
82extern unsigned long init_bootmem_node(pg_data_t *pgdat,
83 unsigned long freepfn,
84 unsigned long startpfn,
85 unsigned long endpfn);
86extern void reserve_bootmem_node(pg_data_t *pgdat,
87 unsigned long physaddr,
88 unsigned long size);
89extern void free_bootmem_node(pg_data_t *pgdat,
90 unsigned long addr,
91 unsigned long size);
92
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]93#ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE
94#define alloc_bootmem_node(pgdat, x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]95 __alloc_bootmem_node(pgdat, x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]96#define alloc_bootmem_pages_node(pgdat, x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]97 __alloc_bootmem_node(pgdat, x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]98#define alloc_bootmem_low_pages_node(pgdat, x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]99 __alloc_bootmem_low_node(pgdat, x, PAGE_SIZE, 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]100#endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */
101
Dave Hansen6f167ec2005-06-23 00:07:39 -0700[diff] [blame]102#ifdef CONFIG_HAVE_ARCH_ALLOC_REMAP
103extern void *alloc_remap(int nid, unsigned long size);
104#else
105static inline void *alloc_remap(int nid, unsigned long size)
106{
107 return NULL;
108}
Franck Bui-Huuf71bf0c2006-09-25 23:31:08 -0700[diff] [blame]109#endif /* CONFIG_HAVE_ARCH_ALLOC_REMAP */
Dave Hansen6f167ec2005-06-23 00:07:39 -0700[diff] [blame]110
David Howells9dec17e2006-07-10 04:44:51 -0700[diff] [blame]111extern unsigned long __meminitdata nr_kernel_pages;
David Howells8da38d72007-03-22 00:11:22 -0800[diff] [blame]112extern unsigned long __meminitdata nr_all_pages;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]113
Franck Bui-Huuf71bf0c2006-09-25 23:31:08 -0700[diff] [blame]114extern void *alloc_large_system_hash(const char *tablename,
115 unsigned long bucketsize,
116 unsigned long numentries,
117 int scale,
118 int flags,
119 unsigned int *_hash_shift,
120 unsigned int *_hash_mask,
121 unsigned long limit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]122
Andrew Morton04903662006-12-06 20:37:33 -0800[diff] [blame]123#define HASH_EARLY 0x00000001 /* Allocating during early boot? */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]124
125/* Only NUMA needs hash distribution.
Ravikiran G Thirumalaie073ae12007-05-02 19:27:08 +0200[diff] [blame]126 * IA64 and x86_64 have sufficient vmalloc space.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]127 */
Ravikiran G Thirumalaie073ae12007-05-02 19:27:08 +0200[diff] [blame]128#if defined(CONFIG_NUMA) && (defined(CONFIG_IA64) || defined(CONFIG_X86_64))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]129#define HASHDIST_DEFAULT 1
130#else
131#define HASHDIST_DEFAULT 0
132#endif
David S. Millerf034b5d2006-08-24 03:08:07 -0700[diff] [blame]133extern int hashdist; /* Distribute hashes across NUMA nodes? */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]134
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]135
136#endif /* _LINUX_BOOTMEM_H */