kernel/power/snapshot.c

28 #include <linux/highmem.h>
1297  * count_free_highmem_pages - Compute the total number of free highmem pages.
1314  * saveable_highmem_page - Check if a highmem page is saveable.
1316  * Determine whether a highmem page should be included in a hibernation image.
1347  * count_highmem_pages - Compute the total number of saveable highmem pages.
1378  * Determine whether a non-highmem page should be included in a hibernation
1415  * count_data_pages - Compute the total number of saveable non-highmem pages.
1572  * Numbers of normal and highmem page frames allocated for hibernation image
1585  * duplicated in @orig_bm and it is released.  On highmem systems it is next
1586  * used for marking "safe" highmem pages, but it has to be reinitialized for
1709 						  unsigned long highmem,
1712 	unsigned long alloc = __fraction(nr_pages, highmem, total);
1723 							 unsigned long highmem,
1837 	unsigned long saveable, size, max_size, count, highmem, pages = 0;
1877 	highmem = save_highmem;
1882 			highmem += zone_page_state(zone, NR_FREE_PAGES);
1887 	count += highmem;
1935 	 * highmem and non-highmem zones separately.
1937 	pages_highmem = preallocate_image_highmem(highmem / 2);
1945 		/* We have exhausted non-highmem pages, try highmem. */
1967 		size = preallocate_highmem_fraction(alloc, highmem, count);
1996  * count_pages_for_highmem - Count non-highmem pages needed for copying highmem.
1998  * Compute the number of non-highmem pages that will be necessary for creating
1999  * copies of highmem pages.
2037  * get_highmem_buffer - Allocate a buffer for highmem pages.
2039  * If there are some highmem pages in the hibernation image, we may need a
2049  * alloc_highmem_pages - Allocate some highmem pages for the image.
2051  * Try to allocate as many pages as needed, but if the number of free highmem
2081  * We first try to allocate as many highmem pages as there are
2082  * saveable highmem pages in the system.  If that fails, we allocate
2083  * non-highmem pages for the copies of the remaining highmem ones.
2085  * In this approach it is likely that the copies of highmem pages will
2277 			 * highmem page (we may not be called again).
2402  * struct highmem_pbe is used for creating the list of highmem pages that
2413  * List of highmem PBEs needed for restoring the highmem pages that were
2421  * count_highmem_image_pages - Compute the number of highmem pages in the image.
2447  * prepare_highmem_image - Allocate memory for loading highmem data from image.
2449  * @nr_highmem_p: Pointer to the number of highmem image pages.
2451  * Try to allocate as many highmem pages as there are highmem image pages
2452  * (@nr_highmem_p points to the variable containing the number of highmem image
2457  * NOTE: This function should not be called if there are no highmem image pages.
2498  * get_highmem_page_buffer - Prepare a buffer to store a highmem image page.
2500  * For a given highmem image page get a buffer that suspend_write_next() should
2504  * the page is to be made in the highmem, @buffer is returned.  Otherwise,
2561  * copy_last_highmem_page - Copy most the most recent highmem image page.
2563  * Copy the contents of a highmem image from @buffer, where the caller of
2625  * memory a list of "safe" highmem pages is created too.
2638 	/* If there is no highmem, the buffer will not be necessary */
2861  * page in the image happens to be a highmem page and its contents should be
2862  * stored in highmem.  Additionally, it recycles bitmap memory that's not
2902  * restore_highmem - Put highmem image pages into their original locations.
2904  * For each highmem page that was in use before hibernation and is included in
2909  * restore the highmem state as seen by the restore kernel.