1 #ifndef _LINUX_VMALLOC_H
2 #define _LINUX_VMALLOC_H
4 #include <linux/spinlock.h>
5 #include <asm/page.h> /* pgprot_t */
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 */
17 unsigned int nr_pages;
18 unsigned long phys_addr;
19 struct vm_struct *next;
23 * Highlevel APIs for driver use
25 extern void *vmalloc(unsigned long size);
26 extern void *vmalloc_exec(unsigned long size);
27 extern void *vmalloc_32(unsigned long size);
28 extern void *__vmalloc(unsigned long size, int gfp_mask, pgprot_t prot);
29 extern void vfree(void *addr);
31 extern void *vmap(struct page **pages, unsigned int count,
32 unsigned long flags, pgprot_t prot);
33 extern void vunmap(void *addr);
36 * Lowlevel-APIs (not for driver use!)
38 extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags);
39 extern struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
40 unsigned long start, unsigned long end);
41 extern struct vm_struct *remove_vm_area(void *addr);
42 extern int map_vm_area(struct vm_struct *area, pgprot_t prot,
43 struct page ***pages);
44 extern void unmap_vm_area(struct vm_struct *area);
47 * Internals. Dont't use..
49 extern rwlock_t vmlist_lock;
50 extern struct vm_struct *vmlist;
52 #endif /* _LINUX_VMALLOC_H */