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Diffstat (limited to 'kernel/power/tuxonice_extent.h')
| -rw-r--r-- | kernel/power/tuxonice_extent.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/kernel/power/tuxonice_extent.h b/kernel/power/tuxonice_extent.h new file mode 100644 index 000000000..cf1289efc --- /dev/null +++ b/kernel/power/tuxonice_extent.h @@ -0,0 +1,45 @@ +/* + * kernel/power/tuxonice_extent.h + * + * Copyright (C) 2003-2015 Nigel Cunningham (nigel at nigelcunningham com au) + * + * This file is released under the GPLv2. + * + * It contains declarations related to extents. Extents are + * TuxOnIce's method of storing some of the metadata for the image. + * See tuxonice_extent.c for more info. + * + */ + +#include "tuxonice_modules.h" + +#ifndef EXTENT_H +#define EXTENT_H + +struct hibernate_extent { + unsigned long start, end; + struct hibernate_extent *next; +}; + +struct hibernate_extent_chain { + unsigned long size; /* size of the chain ie sum (max-min+1) */ + int num_extents; + struct hibernate_extent *first, *last_touched; + struct hibernate_extent *current_extent; + unsigned long current_offset; +}; + +/* Simplify iterating through all the values in an extent chain */ +#define toi_extent_for_each(extent_chain, extentpointer, value) \ +if ((extent_chain)->first) \ + for ((extentpointer) = (extent_chain)->first, (value) = \ + (extentpointer)->start; \ + ((extentpointer) && ((extentpointer)->next || (value) <= \ + (extentpointer)->end)); \ + (((value) == (extentpointer)->end) ? \ + ((extentpointer) = (extentpointer)->next, (value) = \ + ((extentpointer) ? (extentpointer)->start : 0)) : \ + (value)++)) + +extern void toi_put_extent_chain_from(struct hibernate_extent_chain *chain, unsigned long from); +#endif |