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gerrit-public.fairphone.software / kernel / msm-4.9 / 930fc45a49ddebe7555cc5c837d82b9c27e65ff4 / . / include / linux / vmalloc.h
blob: 1d5577b2b75239be397b77532d0a3aef5ee9dd33 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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
Deepak Saxenafd195c42005-09-03 15:54:58 -0700[diff] [blame]13/*
14 * Maximum alignment for ioremap() regions.
15 * Can be overriden by arch-specific value.
16 */
17#ifndef IOREMAP_MAX_ORDER
18#define IOREMAP_MAX_ORDER (7 + PAGE_SHIFT) /* 128 pages */
19#endif
20
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]21struct vm_struct {
22 void *addr;
23 unsigned long size;
24 unsigned long flags;
25 struct page **pages;
26 unsigned int nr_pages;
27 unsigned long phys_addr;
28 struct vm_struct *next;
29};
30
31/*
32 * Highlevel APIs for driver use
33 */
34extern void *vmalloc(unsigned long size);
Christoph Lameter930fc452005-10-29 18:15:41 -0700[diff] [blame^]35extern void *vmalloc_node(unsigned long size, int node);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]36extern void *vmalloc_exec(unsigned long size);
37extern void *vmalloc_32(unsigned long size);
Al Virodd0fc662005-10-07 07:46:04 +0100[diff] [blame]38extern void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot);
Christoph Lameter930fc452005-10-29 18:15:41 -0700[diff] [blame^]39extern void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask,
40 pgprot_t prot);
41extern void *__vmalloc_node(unsigned long size, gfp_t gfp_mask,
42 pgprot_t prot, int node);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]43extern void vfree(void *addr);
44
45extern void *vmap(struct page **pages, unsigned int count,
46 unsigned long flags, pgprot_t prot);
47extern void vunmap(void *addr);
48
49/*
50 * Lowlevel-APIs (not for driver use!)
51 */
52extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags);
53extern struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
54 unsigned long start, unsigned long end);
Christoph Lameter930fc452005-10-29 18:15:41 -0700[diff] [blame^]55extern struct vm_struct *get_vm_area_node(unsigned long size,
56 unsigned long flags, int node);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]57extern struct vm_struct *remove_vm_area(void *addr);
Andi Kleen7856dfe2005-05-20 14:27:57 -0700[diff] [blame]58extern struct vm_struct *__remove_vm_area(void *addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]59extern int map_vm_area(struct vm_struct *area, pgprot_t prot,
60 struct page ***pages);
61extern void unmap_vm_area(struct vm_struct *area);
62
63/*
64 * Internals. Dont't use..
65 */
66extern rwlock_t vmlist_lock;
67extern struct vm_struct *vmlist;
68
69#endif /* _LINUX_VMALLOC_H */