projects/linux·blob v2.6.13 · refs

55 lines · 1.7 KiB

1#ifndef _LINUX_VMALLOC_H
2#define _LINUX_VMALLOC_H
3
4#include <linux/spinlock.h>
5#include <asm/page.h> /* pgprot_t */
6
7/* bits in vm_struct->flags */
8#define VM_IOREMAP 0x00000001 /* ioremap() and friends */
9#define VM_ALLOC 0x00000002 /* vmalloc() */
10#define VM_MAP 0x00000004 /* vmap()ed pages */
11/* bits [20..32] reserved for arch specific ioremap internals */
12
13struct vm_struct {
14 void *addr;
15 unsigned long size;
16 unsigned long flags;
17 struct page **pages;
18 unsigned int nr_pages;
19 unsigned long phys_addr;
20 struct vm_struct *next;
21};
22
23/*
24 * Highlevel APIs for driver use
25 */
26extern void *vmalloc(unsigned long size);
27extern void *vmalloc_exec(unsigned long size);
28extern void *vmalloc_32(unsigned long size);
29extern void *__vmalloc(unsigned long size, unsigned int __nocast gfp_mask, pgprot_t prot);
30extern void *__vmalloc_area(struct vm_struct *area, unsigned int __nocast gfp_mask, pgprot_t prot);
31extern void vfree(void *addr);
32
33extern void *vmap(struct page **pages, unsigned int count,
34 unsigned long flags, pgprot_t prot);
35extern void vunmap(void *addr);
36
37/*
38 * Lowlevel-APIs (not for driver use!)
39 */
40extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags);
41extern struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
42 unsigned long start, unsigned long end);
43extern struct vm_struct *remove_vm_area(void *addr);
44extern struct vm_struct *__remove_vm_area(void *addr);
45extern int map_vm_area(struct vm_struct *area, pgprot_t prot,
46 struct page ***pages);
47extern void unmap_vm_area(struct vm_struct *area);
48
49/*
50 * Internals. Dont't use..
51 */
52extern rwlock_t vmlist_lock;
53extern struct vm_struct *vmlist;
54
55#endif /* _LINUX_VMALLOC_H */