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gerrit-public.fairphone.software / kernel / msm-4.9 / 833423143c3a7c6545e409d65febd0d92deb351b / . / include / linux / vmalloc.h
blob: f6024ab4eff06ebfbb9f875f9b15a014495f8ba2 [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
Nick Piggin83342312006-06-23 02:03:20 -0700[diff] [blame^]7struct vm_area_struct;
8
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]9/* bits in vm_struct->flags */
10#define VM_IOREMAP 0x00000001 /* ioremap() and friends */
11#define VM_ALLOC 0x00000002 /* vmalloc() */
12#define VM_MAP 0x00000004 /* vmap()ed pages */
Nick Piggin83342312006-06-23 02:03:20 -0700[diff] [blame^]13#define VM_USERMAP 0x00000008 /* suitable for remap_vmalloc_range */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]14/* bits [20..32] reserved for arch specific ioremap internals */
15
Deepak Saxenafd195c42005-09-03 15:54:58 -0700[diff] [blame]16/*
17 * Maximum alignment for ioremap() regions.
18 * Can be overriden by arch-specific value.
19 */
20#ifndef IOREMAP_MAX_ORDER
21#define IOREMAP_MAX_ORDER (7 + PAGE_SHIFT) /* 128 pages */
22#endif
23
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]24struct vm_struct {
25 void *addr;
26 unsigned long size;
27 unsigned long flags;
28 struct page **pages;
29 unsigned int nr_pages;
30 unsigned long phys_addr;
31 struct vm_struct *next;
32};
33
34/*
35 * Highlevel APIs for driver use
36 */
37extern void *vmalloc(unsigned long size);
Nick Piggin83342312006-06-23 02:03:20 -0700[diff] [blame^]38extern void *vmalloc_user(unsigned long size);
Christoph Lameter930fc452005-10-29 18:15:41 -0700[diff] [blame]39extern void *vmalloc_node(unsigned long size, int node);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]40extern void *vmalloc_exec(unsigned long size);
41extern void *vmalloc_32(unsigned long size);
Nick Piggin83342312006-06-23 02:03:20 -0700[diff] [blame^]42extern void *vmalloc_32_user(unsigned long size);
Al Virodd0fc662005-10-07 07:46:04 +0100[diff] [blame]43extern void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot);
Christoph Lameter930fc452005-10-29 18:15:41 -0700[diff] [blame]44extern void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask,
45 pgprot_t prot);
46extern void *__vmalloc_node(unsigned long size, gfp_t gfp_mask,
47 pgprot_t prot, int node);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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);
Nick Piggin83342312006-06-23 02:03:20 -0700[diff] [blame^]53
54extern int remap_vmalloc_range(struct vm_area_struct *vma, void *addr,
55 unsigned long pgoff);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]56
57/*
58 * Lowlevel-APIs (not for driver use!)
59 */
60extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags);
61extern struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
62 unsigned long start, unsigned long end);
Christoph Lameter930fc452005-10-29 18:15:41 -0700[diff] [blame]63extern struct vm_struct *get_vm_area_node(unsigned long size,
64 unsigned long flags, int node);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]65extern struct vm_struct *remove_vm_area(void *addr);
Andi Kleen7856dfe2005-05-20 14:27:57 -0700[diff] [blame]66extern struct vm_struct *__remove_vm_area(void *addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]67extern int map_vm_area(struct vm_struct *area, pgprot_t prot,
68 struct page ***pages);
69extern void unmap_vm_area(struct vm_struct *area);
70
71/*
72 * Internals. Dont't use..
73 */
74extern rwlock_t vmlist_lock;
75extern struct vm_struct *vmlist;
76
77#endif /* _LINUX_VMALLOC_H */