C++ (Cpp) snapshot_additional_pages Examples

Example #1

int swsusp_shrink_memory(void)
{
	long tmp;
	struct zone *zone;
	unsigned long pages = 0;
	unsigned int i = 0;
	char *p = "-\\|/";
	struct timeval start, stop;

	printk("Shrinking memory...  ");
	do_gettimeofday(&start);
	do {
		long size, highmem_size;

		highmem_size = count_highmem_pages();
		size = count_data_pages() + PAGES_FOR_IO;
		tmp = size;
		size += highmem_size;
		for_each_zone (zone)
			if (populated_zone(zone)) {
				if (is_highmem(zone)) {
					highmem_size -=
					zone_page_state(zone, NR_FREE_PAGES);
				} else {
					tmp -= zone_page_state(zone, NR_FREE_PAGES);
					tmp += zone->lowmem_reserve[ZONE_NORMAL];
					tmp += snapshot_additional_pages(zone);
				}
			}

		if (highmem_size < 0)
			highmem_size = 0;

		tmp += highmem_size;
		if (tmp > 0) {
			tmp = __shrink_memory(tmp);
			if (!tmp)
				return -ENOMEM;
			pages += tmp;
		} else if (size > image_size / PAGE_SIZE) {
			tmp = __shrink_memory(size - (image_size / PAGE_SIZE));
			pages += tmp;
		}
		printk("\b%c", p[i++%4]);
	} while (tmp > 0);
	do_gettimeofday(&stop);
	printk("\bdone (%lu pages freed)\n", pages);
	swsusp_show_speed(&start, &stop, pages, "Freed");

	return 0;
}

Example #2

File: snapshot.c Project: Voskrese/mipsonqemu

static int enough_free_mem(unsigned int nr_pages)
{
	struct zone *zone;
	unsigned int free = 0, meta = 0;

	for_each_zone (zone)
		if (!is_highmem(zone)) {
			free += zone->free_pages;
			meta += snapshot_additional_pages(zone);
		}

	pr_debug("swsusp: pages needed: %u + %u + %u, available pages: %u\n",
		nr_pages, PAGES_FOR_IO, meta, free);

	return free > nr_pages + PAGES_FOR_IO + meta;
}