#ifndef AMD_DEFRAG_H
#define AMD_DEFRAG_H

#include<linux/module.h>
#include<linux/init.h>
#include<linux/mmzone.h>
#include<linux/mm.h>
#include<asm/page.h>
#include<linux/string.h>
#include<linux/list.h>
#include<linux/preempt.h>
#include<linux/page-flags.h>
#include<asm/rmap.h>
#include<linux/slab.h>
#include<linux/vmalloc.h>
#include<linux/slab.h>
#include<asm/tlbflush.h>
#include<asm/cacheflush.h>
#include<asm/bitops.h>

#define LINEAR_SCAN_THRESHOLD ((MAX_ORDER>>1)-1)

#define FLAG_MASK 0x000fffff
#define MAX_SIZE (1<<MAX_ORDER)
#define CALL_FROM_HERE

#define ORDER 1



/*
* header for main module
* */
static int amd_init(void);
static void amd_exit(void);
static int movable_page(struct page *page);
static void update_to_ptes(struct page *to);
static void free_allocated_page(struct page *page);
static void flush_from_caches(pte_addr_t paddr);
static void update_struct_page(struct page *to,struct page *from,struct 
zone 
*zone);
static int defrag(int order,struct zone *zone);
static int traverse_free_list(int order,struct zone *zone);
static void move_page(struct page *from,struct page *to,struct zone 
*zone);
static int page_free(struct page *page);

/*
* header for to_pages
* */
static int count_alloc_pages(int order,unsigned long *alloc_bitmap);

static struct page *get_free_buddy(int order,int bit_offset,struct zone 
*zone);

static void split_block(int order,int *non_movable,int *movable,struct 
page 
*free_buddy,struct page**to_pages,struct zone *zone);

static int get_to_pages_higher(int order,struct zone *zone,struct page 
*start_page,int *non_movable,int *movable,struct page **to_pages,int 
no_forbidden_bits);

static void get_to_pages(struct zone *zone,struct page *start_page,int 
allocated,struct page **to_pages,int *non_movable,int *movable,int 
forbidden_bits);

static int find_to_pages(int failed_order,struct zone *zone,struct page 
*start_page,int allocated,struct page **to_pages);

/*
* header for from_pages
* */
static struct page *get_from_block(int order,struct zone *zone,unsigned 
long 
*alloc_bitmap);

static int linear_scan_pages(struct page *page,struct page* 
start_page,int 
order,unsigned long *alloc_bitmap);

static struct page *movable_block(long bit_offset,int order,struct zone 
*zone,unsigned long *alloc_bitmap);

static struct page *scan_mem_page(int order,struct zone * zone,unsigned 
long 
*alloc_bitmap);

static void clear_bitmap(unsigned long *bitmap,int order);

static int bit_test(int nr,unsigned long *addr);

#endif