kernel/power/tuxonice_prepare_image.h

   1 /*
   2  * kernel/power/tuxonice_prepare_image.h
   3  *
   4  * Copyright (C) 2003-2010 Nigel Cunningham (nigel at tuxonice net)
   5  *
   6  * This file is released under the GPLv2.
   7  *
   8  */
   9
  10 #include <asm/sections.h>
  11
  12 extern int toi_prepare_image(void);
  13 extern void toi_recalculate_image_contents(int storage_available);
  14 extern unsigned long real_nr_free_pages(unsigned long zone_idx_mask);
  15 extern long image_size_limit;
  16 extern void toi_free_extra_pagedir_memory(void);
  17 extern unsigned long extra_pd1_pages_allowance;
  18 extern void free_attention_list(void);
  19
  20 #define MIN_FREE_RAM 100
  21 #define MIN_EXTRA_PAGES_ALLOWANCE 500
  22
  23 #define all_zones_mask ((unsigned long) ((1 << MAX_NR_ZONES) - 1))
  24 #ifdef CONFIG_HIGHMEM
  25 #define real_nr_free_high_pages() (real_nr_free_pages(1 << ZONE_HIGHMEM))
  26 #define real_nr_free_low_pages() (real_nr_free_pages(all_zones_mask - \
  27                                                 (1 << ZONE_HIGHMEM)))
  28 #else
  29 #define real_nr_free_high_pages() (0)
  30 #define real_nr_free_low_pages() (real_nr_free_pages(all_zones_mask))
  31
  32 /* For eat_memory function */
  33 #define ZONE_HIGHMEM (MAX_NR_ZONES + 1)
  34 #endif
  35
  36 unsigned long get_header_storage_needed(void);
  37 unsigned long any_to_free(int use_image_size_limit);
  38 int try_allocate_extra_memory(void);