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 000000000000..3a358c895188 --- /dev/null +++ b/include/linux/vmalloc.h @@ -0,0 +1,54 @@ +#ifndef _LINUX_VMALLOC_H +#define _LINUX_VMALLOC_H + +#include <linux/spinlock.h> +#include <asm/page.h> /* pgprot_t */ + +/* bits in vm_struct->flags */ +#define VM_IOREMAP 0x00000001 /* ioremap() and friends */ +#define VM_ALLOC 0x00000002 /* vmalloc() */ +#define VM_MAP 0x00000004 /* vmap()ed pages */ +/* bits [20..32] reserved for arch specific ioremap internals */ + +struct vm_struct { + void *addr; + unsigned long size; + unsigned long flags; + struct page **pages; + unsigned int nr_pages; + unsigned long phys_addr; + struct vm_struct *next; +}; + +/* + * Highlevel APIs for driver use + */ +extern void *vmalloc(unsigned long size); +extern void *vmalloc_exec(unsigned long size); +extern void *vmalloc_32(unsigned long size); +extern void *__vmalloc(unsigned long size, unsigned int __nocast gfp_mask, pgprot_t prot); +extern void *__vmalloc_area(struct vm_struct *area, unsigned int __nocast gfp_mask, pgprot_t prot); +extern void vfree(void *addr); + +extern void *vmap(struct page **pages, unsigned int count, + unsigned long flags, pgprot_t prot); +extern void vunmap(void *addr); + +/* + * Lowlevel-APIs (not for driver use!) + */ +extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags); +extern struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags, + unsigned long start, unsigned long end); +extern struct vm_struct *remove_vm_area(void *addr); +extern int map_vm_area(struct vm_struct *area, pgprot_t prot, + struct page ***pages); +extern void unmap_vm_area(struct vm_struct *area); + +/* + * Internals. Dont't use.. + */ +extern rwlock_t vmlist_lock; +extern struct vm_struct *vmlist; + +#endif /* _LINUX_VMALLOC_H */ |