mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 16:50:53 +07:00
d0a21265df
Four architectures (arm, mips, sparc, x86) use __vmalloc_area() for module_init(). Much of the code is duplicated and can be generalized in a globally accessible function, __vmalloc_node_range(). __vmalloc_node() now calls into __vmalloc_node_range() with a range of [VMALLOC_START, VMALLOC_END) for functionally equivalent behavior. Each architecture may then use __vmalloc_node_range() directly to remove the duplication of code. Signed-off-by: David Rientjes <rientjes@google.com> Cc: Christoph Lameter <cl@linux.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
127 lines
4.0 KiB
C
127 lines
4.0 KiB
C
#ifndef _LINUX_VMALLOC_H
|
|
#define _LINUX_VMALLOC_H
|
|
|
|
#include <linux/spinlock.h>
|
|
#include <linux/init.h>
|
|
#include <asm/page.h> /* pgprot_t */
|
|
|
|
struct vm_area_struct; /* vma defining user mapping in mm_types.h */
|
|
|
|
/* bits in flags of vmalloc's vm_struct below */
|
|
#define VM_IOREMAP 0x00000001 /* ioremap() and friends */
|
|
#define VM_ALLOC 0x00000002 /* vmalloc() */
|
|
#define VM_MAP 0x00000004 /* vmap()ed pages */
|
|
#define VM_USERMAP 0x00000008 /* suitable for remap_vmalloc_range */
|
|
#define VM_VPAGES 0x00000010 /* buffer for pages was vmalloc'ed */
|
|
/* bits [20..32] reserved for arch specific ioremap internals */
|
|
|
|
/*
|
|
* Maximum alignment for ioremap() regions.
|
|
* Can be overriden by arch-specific value.
|
|
*/
|
|
#ifndef IOREMAP_MAX_ORDER
|
|
#define IOREMAP_MAX_ORDER (7 + PAGE_SHIFT) /* 128 pages */
|
|
#endif
|
|
|
|
struct vm_struct {
|
|
struct vm_struct *next;
|
|
void *addr;
|
|
unsigned long size;
|
|
unsigned long flags;
|
|
struct page **pages;
|
|
unsigned int nr_pages;
|
|
phys_addr_t phys_addr;
|
|
void *caller;
|
|
};
|
|
|
|
/*
|
|
* Highlevel APIs for driver use
|
|
*/
|
|
extern void vm_unmap_ram(const void *mem, unsigned int count);
|
|
extern void *vm_map_ram(struct page **pages, unsigned int count,
|
|
int node, pgprot_t prot);
|
|
extern void vm_unmap_aliases(void);
|
|
|
|
#ifdef CONFIG_MMU
|
|
extern void __init vmalloc_init(void);
|
|
#else
|
|
static inline void vmalloc_init(void)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
extern void *vmalloc(unsigned long size);
|
|
extern void *vzalloc(unsigned long size);
|
|
extern void *vmalloc_user(unsigned long size);
|
|
extern void *vmalloc_node(unsigned long size, int node);
|
|
extern void *vzalloc_node(unsigned long size, int node);
|
|
extern void *vmalloc_exec(unsigned long size);
|
|
extern void *vmalloc_32(unsigned long size);
|
|
extern void *vmalloc_32_user(unsigned long size);
|
|
extern void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot);
|
|
extern void *__vmalloc_node_range(unsigned long size, unsigned long align,
|
|
unsigned long start, unsigned long end, gfp_t gfp_mask,
|
|
pgprot_t prot, int node, void *caller);
|
|
extern void vfree(const void *addr);
|
|
|
|
extern void *vmap(struct page **pages, unsigned int count,
|
|
unsigned long flags, pgprot_t prot);
|
|
extern void vunmap(const void *addr);
|
|
|
|
extern int remap_vmalloc_range(struct vm_area_struct *vma, void *addr,
|
|
unsigned long pgoff);
|
|
void vmalloc_sync_all(void);
|
|
|
|
/*
|
|
* Lowlevel-APIs (not for driver use!)
|
|
*/
|
|
|
|
static inline size_t get_vm_area_size(const struct vm_struct *area)
|
|
{
|
|
/* return actual size without guard page */
|
|
return area->size - PAGE_SIZE;
|
|
}
|
|
|
|
extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags);
|
|
extern struct vm_struct *get_vm_area_caller(unsigned long size,
|
|
unsigned long flags, void *caller);
|
|
extern struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
|
|
unsigned long start, unsigned long end);
|
|
extern struct vm_struct *__get_vm_area_caller(unsigned long size,
|
|
unsigned long flags,
|
|
unsigned long start, unsigned long end,
|
|
void *caller);
|
|
extern struct vm_struct *remove_vm_area(const void *addr);
|
|
|
|
extern int map_vm_area(struct vm_struct *area, pgprot_t prot,
|
|
struct page ***pages);
|
|
extern int map_kernel_range_noflush(unsigned long start, unsigned long size,
|
|
pgprot_t prot, struct page **pages);
|
|
extern void unmap_kernel_range_noflush(unsigned long addr, unsigned long size);
|
|
extern void unmap_kernel_range(unsigned long addr, unsigned long size);
|
|
|
|
/* Allocate/destroy a 'vmalloc' VM area. */
|
|
extern struct vm_struct *alloc_vm_area(size_t size);
|
|
extern void free_vm_area(struct vm_struct *area);
|
|
|
|
/* for /dev/kmem */
|
|
extern long vread(char *buf, char *addr, unsigned long count);
|
|
extern long vwrite(char *buf, char *addr, unsigned long count);
|
|
|
|
/*
|
|
* Internals. Dont't use..
|
|
*/
|
|
extern rwlock_t vmlist_lock;
|
|
extern struct vm_struct *vmlist;
|
|
extern __init void vm_area_register_early(struct vm_struct *vm, size_t align);
|
|
|
|
#ifdef CONFIG_SMP
|
|
struct vm_struct **pcpu_get_vm_areas(const unsigned long *offsets,
|
|
const size_t *sizes, int nr_vms,
|
|
size_t align);
|
|
|
|
void pcpu_free_vm_areas(struct vm_struct **vms, int nr_vms);
|
|
#endif
|
|
|
|
#endif /* _LINUX_VMALLOC_H */
|