kernel/power/tuxonice_pageflags.h

   1 /*
   2  * kernel/power/tuxonice_pageflags.h
   3  *
   4  * Copyright (C) 2004-2010 Nigel Cunningham (nigel at tuxonice net)
   5  *
   6  * This file is released under the GPLv2.
   7  */
   8
   9 #ifndef KERNEL_POWER_TUXONICE_PAGEFLAGS_H
  10 #define KERNEL_POWER_TUXONICE_PAGEFLAGS_H
  11
  12 extern struct memory_bitmap *pageset1_map;
  13 extern struct memory_bitmap *pageset1_copy_map;
  14 extern struct memory_bitmap *pageset2_map;
  15 extern struct memory_bitmap *page_resave_map;
  16 extern struct memory_bitmap *io_map;
  17 extern struct memory_bitmap *nosave_map;
  18 extern struct memory_bitmap *free_map;
  19
  20 #define PagePageset1(page) \
  21         (memory_bm_test_bit(pageset1_map, page_to_pfn(page)))
  22 #define SetPagePageset1(page) \
  23         (memory_bm_set_bit(pageset1_map, page_to_pfn(page)))
  24 #define ClearPagePageset1(page) \
  25         (memory_bm_clear_bit(pageset1_map, page_to_pfn(page)))
  26
  27 #define PagePageset1Copy(page) \
  28         (memory_bm_test_bit(pageset1_copy_map, page_to_pfn(page)))
  29 #define SetPagePageset1Copy(page) \
  30         (memory_bm_set_bit(pageset1_copy_map, page_to_pfn(page)))
  31 #define ClearPagePageset1Copy(page) \
  32         (memory_bm_clear_bit(pageset1_copy_map, page_to_pfn(page)))
  33
  34 #define PagePageset2(page) \
  35         (memory_bm_test_bit(pageset2_map, page_to_pfn(page)))
  36 #define SetPagePageset2(page) \
  37         (memory_bm_set_bit(pageset2_map, page_to_pfn(page)))
  38 #define ClearPagePageset2(page) \
  39         (memory_bm_clear_bit(pageset2_map, page_to_pfn(page)))
  40
  41 #define PageWasRW(page) \
  42         (memory_bm_test_bit(pageset2_map, page_to_pfn(page)))
  43 #define SetPageWasRW(page) \
  44         (memory_bm_set_bit(pageset2_map, page_to_pfn(page)))
  45 #define ClearPageWasRW(page) \
  46         (memory_bm_clear_bit(pageset2_map, page_to_pfn(page)))
  47
  48 #define PageResave(page) (page_resave_map ? \
  49         memory_bm_test_bit(page_resave_map, page_to_pfn(page)) : 0)
  50 #define SetPageResave(page) \
  51         (memory_bm_set_bit(page_resave_map, page_to_pfn(page)))
  52 #define ClearPageResave(page) \
  53         (memory_bm_clear_bit(page_resave_map, page_to_pfn(page)))
  54
  55 #define PageNosave(page) (nosave_map ? \
  56                 memory_bm_test_bit(nosave_map, page_to_pfn(page)) : 0)
  57 #define SetPageNosave(page) \
  58         (memory_bm_set_bit(nosave_map, page_to_pfn(page)))
  59 #define ClearPageNosave(page) \
  60         (memory_bm_clear_bit(nosave_map, page_to_pfn(page)))
  61
  62 #define PageNosaveFree(page) (free_map ? \
  63                 memory_bm_test_bit(free_map, page_to_pfn(page)) : 0)
  64 #define SetPageNosaveFree(page) \
  65         (memory_bm_set_bit(free_map, page_to_pfn(page)))
  66 #define ClearPageNosaveFree(page) \
  67         (memory_bm_clear_bit(free_map, page_to_pfn(page)))
  68
  69 extern void save_pageflags(struct memory_bitmap *pagemap);
  70 extern int load_pageflags(struct memory_bitmap *pagemap);
  71 extern int toi_pageflags_space_needed(void);
  72 #endif