Gitiles
Code Review Sign In
gerrit-public.fairphone.software / fp2-dev / kernel / msm / bb0923a66820718f636736b22ce47372f79e3400 / . / include / linux / bootmem.h
blob: 1e8dddfb3083e83865360549ff4ee9117e02e4fc [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
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
17extern unsigned long max_low_pfn;
18extern unsigned long min_low_pfn;
19
20/*
21 * highest page
22 */
23extern unsigned long max_pfn;
24
Vivek Goyal92aa63a2005-06-25 14:58:18 -0700[diff] [blame]25#ifdef CONFIG_CRASH_DUMP
26extern unsigned long saved_max_pfn;
27#endif
28
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]29/*
30 * node_bootmem_map is a map pointer - the bits represent all physical
31 * memory pages (including holes) on the node.
32 */
33typedef struct bootmem_data {
34 unsigned long node_boot_start;
35 unsigned long node_low_pfn;
36 void *node_bootmem_map;
37 unsigned long last_offset;
38 unsigned long last_pos;
39 unsigned long last_success; /* Previous allocation point. To speed
40 * up searching */
KAMEZAWA Hiroyuki679bc9f2006-03-27 01:15:58 -0800[diff] [blame]41 struct list_head list;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]42} bootmem_data_t;
43
Franck Bui-Huu2d1a07d2006-09-25 23:31:03 -0700[diff] [blame]44extern unsigned long bootmem_bootmap_pages (unsigned long);
45extern unsigned long init_bootmem (unsigned long addr, unsigned long memend);
46extern void free_bootmem (unsigned long addr, unsigned long size);
Franck Bui-Huubb0923a2006-09-25 23:31:05 -0700[diff] [blame^]47extern void * __alloc_bootmem (unsigned long size,
48 unsigned long align,
49 unsigned long goal);
50extern void * __alloc_bootmem_nopanic (unsigned long size,
51 unsigned long align,
52 unsigned long goal);
Franck Bui-Huu2d1a07d2006-09-25 23:31:03 -0700[diff] [blame]53extern void * __alloc_bootmem_low(unsigned long size,
Franck Bui-Huubb0923a2006-09-25 23:31:05 -0700[diff] [blame^]54 unsigned long align,
55 unsigned long goal);
Franck Bui-Huu2d1a07d2006-09-25 23:31:03 -0700[diff] [blame]56extern void * __alloc_bootmem_low_node(pg_data_t *pgdat,
Franck Bui-Huubb0923a2006-09-25 23:31:05 -0700[diff] [blame^]57 unsigned long size,
58 unsigned long align,
59 unsigned long goal);
Franck Bui-Huu2d1a07d2006-09-25 23:31:03 -0700[diff] [blame]60extern void * __alloc_bootmem_core(struct bootmem_data *bdata,
Franck Bui-Huubb0923a2006-09-25 23:31:05 -0700[diff] [blame^]61 unsigned long size,
62 unsigned long align,
63 unsigned long goal,
64 unsigned long limit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]65#ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE
Franck Bui-Huu2d1a07d2006-09-25 23:31:03 -0700[diff] [blame]66extern void reserve_bootmem (unsigned long addr, unsigned long size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]67#define alloc_bootmem(x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]68 __alloc_bootmem(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]69#define alloc_bootmem_low(x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]70 __alloc_bootmem_low(x, SMP_CACHE_BYTES, 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]71#define alloc_bootmem_pages(x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]72 __alloc_bootmem(x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]73#define alloc_bootmem_low_pages(x) \
Franck Bui-Huu71fb2e82006-09-25 23:31:05 -0700[diff] [blame]74 __alloc_bootmem_low(x, PAGE_SIZE, 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]75#endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */
Franck Bui-Huu2d1a07d2006-09-25 23:31:03 -0700[diff] [blame]76extern unsigned long free_all_bootmem (void);
Franck Bui-Huubb0923a2006-09-25 23:31:05 -0700[diff] [blame^]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);
Franck Bui-Huu2d1a07d2006-09-25 23:31:03 -0700[diff] [blame]91extern unsigned long free_all_bootmem_node (pg_data_t *pgdat);
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}
108#endif
109
David Howells9dec17e2006-07-10 04:44:51 -0700[diff] [blame]110extern unsigned long __meminitdata nr_kernel_pages;
Yasunori Goto86356ab2006-06-23 02:03:09 -0700[diff] [blame]111extern unsigned long nr_all_pages;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]112
Franck Bui-Huu2d1a07d2006-09-25 23:31:03 -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
122#define HASH_HIGHMEM 0x00000001 /* Consider highmem? */
123#define HASH_EARLY 0x00000002 /* Allocating during early boot? */
124
125/* Only NUMA needs hash distribution.
126 * IA64 is known to have sufficient vmalloc space.
127 */
128#if defined(CONFIG_NUMA) && defined(CONFIG_IA64)
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 */