diff options
Diffstat (limited to 'include/linux/vmalloc.h')
| -rw-r--r-- | include/linux/vmalloc.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h new file mode 100644 index 0000000000..3a358c8951 --- /dev/null +++ b/include/linux/vmalloc.h | |||
| @@ -0,0 +1,54 @@ | |||
| 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 | |||
| 13 | struct 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 | */ | ||
| 26 | extern void *vmalloc(unsigned long size); | ||
| 27 | extern void *vmalloc_exec(unsigned long size); | ||
| 28 | extern void *vmalloc_32(unsigned long size); | ||
| 29 | extern void *__vmalloc(unsigned long size, unsigned int __nocast gfp_mask, pgprot_t prot); | ||
| 30 | extern void *__vmalloc_area(struct vm_struct *area, unsigned int __nocast gfp_mask, pgprot_t prot); | ||
| 31 | extern void vfree(void *addr); | ||
| 32 | |||
| 33 | extern void *vmap(struct page **pages, unsigned int count, | ||
| 34 | unsigned long flags, pgprot_t prot); | ||
| 35 | extern void vunmap(void *addr); | ||
| 36 | |||
| 37 | /* | ||
| 38 | * Lowlevel-APIs (not for driver use!) | ||
| 39 | */ | ||
| 40 | extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags); | ||
| 41 | extern struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags, | ||
| 42 | unsigned long start, unsigned long end); | ||
| 43 | extern struct vm_struct *remove_vm_area(void *addr); | ||
| 44 | extern int map_vm_area(struct vm_struct *area, pgprot_t prot, | ||
| 45 | struct page ***pages); | ||
| 46 | extern void unmap_vm_area(struct vm_struct *area); | ||
| 47 | |||
| 48 | /* | ||
| 49 | * Internals. Dont't use.. | ||
| 50 | */ | ||
| 51 | extern rwlock_t vmlist_lock; | ||
| 52 | extern struct vm_struct *vmlist; | ||
| 53 | |||
| 54 | #endif /* _LINUX_VMALLOC_H */ | ||