1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
#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 */
|