1#ifndef _LINUX_VMALLOC_H
2#define _LINUX_VMALLOC_H
3
4#include <linux/spinlock.h>
5#include <asm/page.h>
6
7struct vm_area_struct;
8
9
10#define VM_IOREMAP 0x00000001
11#define VM_ALLOC 0x00000002
12#define VM_MAP 0x00000004
13#define VM_USERMAP 0x00000008
14#define VM_VPAGES 0x00000010
15
16
17
18
19
20
21#ifndef IOREMAP_MAX_ORDER
22#define IOREMAP_MAX_ORDER (7 + PAGE_SHIFT)
23#endif
24
25struct vm_struct {
26
27 struct vm_struct *next;
28 void *addr;
29 unsigned long size;
30 unsigned long flags;
31 struct page **pages;
32 unsigned int nr_pages;
33 unsigned long phys_addr;
34};
35
36
37
38
39extern void *vmalloc(unsigned long size);
40extern void *vmalloc_user(unsigned long size);
41extern void *vmalloc_node(unsigned long size, int node);
42extern void *vmalloc_exec(unsigned long size);
43extern void *vmalloc_32(unsigned long size);
44extern void *vmalloc_32_user(unsigned long size);
45extern void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot);
46extern void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask,
47 pgprot_t prot);
48extern void vfree(void *addr);
49
50extern void *vmap(struct page **pages, unsigned int count,
51 unsigned long flags, pgprot_t prot);
52extern void vunmap(void *addr);
53
54extern int remap_vmalloc_range(struct vm_area_struct *vma, void *addr,
55 unsigned long pgoff);
56void vmalloc_sync_all(void);
57
58
59
60
61
62static inline size_t get_vm_area_size(const struct vm_struct *area)
63{
64
65 return area->size - PAGE_SIZE;
66}
67
68extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags);
69extern struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
70 unsigned long start, unsigned long end);
71extern struct vm_struct *get_vm_area_node(unsigned long size,
72 unsigned long flags, int node,
73 gfp_t gfp_mask);
74extern struct vm_struct *remove_vm_area(void *addr);
75
76extern int map_vm_area(struct vm_struct *area, pgprot_t prot,
77 struct page ***pages);
78extern void unmap_kernel_range(unsigned long addr, unsigned long size);
79
80
81extern struct vm_struct *alloc_vm_area(size_t size);
82extern void free_vm_area(struct vm_struct *area);
83
84
85
86
87extern rwlock_t vmlist_lock;
88extern struct vm_struct *vmlist;
89
90#endif
91