1 files changed, 0 insertions, 328 deletions

diff --git a/kernel/power/swsusp.c b/kernel/power/swsusp.c
index 78c35047586d..5b3601bd1893 100644
--- a/kernel/power/swsusp.c
+++ b/kernel/power/swsusp.c
@@ -55,332 +55,4 @@
 
 #include "power.h"
 
-/*
- * Preferred image size in bytes (tunable via /sys/power/image_size).
- * When it is set to N, swsusp will do its best to ensure the image
- * size will not exceed N bytes, but if that is impossible, it will
- * try to create the smallest image possible.
- */
-unsigned long image_size = 500 * 1024 * 1024;
-
 int in_suspend __nosavedata = 0;
-
-/**
- *	The following functions are used for tracing the allocated
- *	swap pages, so that they can be freed in case of an error.
- */
-
-struct swsusp_extent {
-	struct rb_node node;
-	unsigned long start;
-	unsigned long end;
-};
-
-static struct rb_root swsusp_extents = RB_ROOT;
-
-static int swsusp_extents_insert(unsigned long swap_offset)
-{
-	struct rb_node **new = &(swsusp_extents.rb_node);
-	struct rb_node *parent = NULL;
-	struct swsusp_extent *ext;
-
-	/* Figure out where to put the new node */
-	while (*new) {
-		ext = container_of(*new, struct swsusp_extent, node);
-		parent = *new;
-		if (swap_offset < ext->start) {
-			/* Try to merge */
-			if (swap_offset == ext->start - 1) {
-				ext->start--;
-				return 0;
-			}
-			new = &((*new)->rb_left);
-		} else if (swap_offset > ext->end) {
-			/* Try to merge */
-			if (swap_offset == ext->end + 1) {
-				ext->end++;
-				return 0;
-			}
-			new = &((*new)->rb_right);
-		} else {
-			/* It already is in the tree */
-			return -EINVAL;
-		}
-	}
-	/* Add the new node and rebalance the tree. */
-	ext = kzalloc(sizeof(struct swsusp_extent), GFP_KERNEL);
-	if (!ext)
-		return -ENOMEM;
-
-	ext->start = swap_offset;
-	ext->end = swap_offset;
-	rb_link_node(&ext->node, parent, new);
-	rb_insert_color(&ext->node, &swsusp_extents);
-	return 0;
-}
-
-/**
- *	alloc_swapdev_block - allocate a swap page and register that it has
- *	been allocated, so that it can be freed in case of an error.
- */
-
-sector_t alloc_swapdev_block(int swap)
-{
-	unsigned long offset;
-
-	offset = swp_offset(get_swap_page_of_type(swap));
-	if (offset) {
-		if (swsusp_extents_insert(offset))
-			swap_free(swp_entry(swap, offset));
-		else
-			return swapdev_block(swap, offset);
-	}
-	return 0;
-}
-
-/**
- *	free_all_swap_pages - free swap pages allocated for saving image data.
- *	It also frees the extents used to register which swap entres had been
- *	allocated.
- */
-
-void free_all_swap_pages(int swap)
-{
-	struct rb_node *node;
-
-	while ((node = swsusp_extents.rb_node)) {
-		struct swsusp_extent *ext;
-		unsigned long offset;
-
-		ext = container_of(node, struct swsusp_extent, node);
-		rb_erase(node, &swsusp_extents);
-		for (offset = ext->start; offset <= ext->end; offset++)
-			swap_free(swp_entry(swap, offset));
-
-		kfree(ext);
-	}
-}
-
-int swsusp_swap_in_use(void)
-{
-	return (swsusp_extents.rb_node != NULL);
-}
-
-/**
- *	swsusp_show_speed - print the time elapsed between two events represented by
- *	@start and @stop
- *
- *	@nr_pages -	number of pages processed between @start and @stop
- *	@msg -		introductory message to print
- */
-
-void swsusp_show_speed(struct timeval *start, struct timeval *stop,
-			unsigned nr_pages, char *msg)
-{
-	s64 elapsed_centisecs64;
-	int centisecs;
-	int k;
-	int kps;
-
-	elapsed_centisecs64 = timeval_to_ns(stop) - timeval_to_ns(start);
-	do_div(elapsed_centisecs64, NSEC_PER_SEC / 100);
-	centisecs = elapsed_centisecs64;
-	if (centisecs == 0)
-		centisecs = 1;	/* avoid div-by-zero */
-	k = nr_pages * (PAGE_SIZE / 1024);
-	kps = (k * 100) / centisecs;
-	printk(KERN_INFO "PM: %s %d kbytes in %d.%02d seconds (%d.%02d MB/s)\n",
-			msg, k,
-			centisecs / 100, centisecs % 100,
-			kps / 1000, (kps % 1000) / 10);
-}
-
-/**
- *	swsusp_shrink_memory -  Try to free as much memory as needed
- *
- *	... but do not OOM-kill anyone
- *
- *	Notice: all userland should be stopped before it is called, or
- *	livelock is possible.
- */
-
-#define SHRINK_BITE	10000
-static inline unsigned long __shrink_memory(long tmp)
-{
-	if (tmp > SHRINK_BITE)
-		tmp = SHRINK_BITE;
-	return shrink_all_memory(tmp);
-}
-
-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(KERN_INFO "PM: Shrinking memory...  ");
-	do_gettimeofday(&start);
-	do {
-		long size, highmem_size;
-
-		highmem_size = count_highmem_pages();
-		size = count_data_pages() + PAGES_FOR_IO + SPARE_PAGES;
-		tmp = size;
-		size += highmem_size;
-		for_each_populated_zone(zone) {
-			tmp += snapshot_additional_pages(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];
-			}
-		}
-
-		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;
-}
-
-/*
- * Platforms, like ACPI, may want us to save some memory used by them during
- * hibernation and to restore the contents of this memory during the subsequent
- * resume.  The code below implements a mechanism allowing us to do that.
- */
-
-struct nvs_page {
-	unsigned long phys_start;
-	unsigned int size;
-	void *kaddr;
-	void *data;
-	struct list_head node;
-};
-
-static LIST_HEAD(nvs_list);
-
-/**
- *	hibernate_nvs_register - register platform NVS memory region to save
- *	@start - physical address of the region
- *	@size - size of the region
- *
- *	The NVS region need not be page-aligned (both ends) and we arrange
- *	things so that the data from page-aligned addresses in this region will
- *	be copied into separate RAM pages.
- */
-int hibernate_nvs_register(unsigned long start, unsigned long size)
-{
-	struct nvs_page *entry, *next;
-
-	while (size > 0) {
-		unsigned int nr_bytes;
-
-		entry = kzalloc(sizeof(struct nvs_page), GFP_KERNEL);
-		if (!entry)
-			goto Error;
-
-		list_add_tail(&entry->node, &nvs_list);
-		entry->phys_start = start;
-		nr_bytes = PAGE_SIZE - (start & ~PAGE_MASK);
-		entry->size = (size < nr_bytes) ? size : nr_bytes;
-
-		start += entry->size;
-		size -= entry->size;
-	}
-	return 0;
-
- Error:
-	list_for_each_entry_safe(entry, next, &nvs_list, node) {
-		list_del(&entry->node);
-		kfree(entry);
-	}
-	return -ENOMEM;
-}
-
-/**
- *	hibernate_nvs_free - free data pages allocated for saving NVS regions
- */
-void hibernate_nvs_free(void)
-{
-	struct nvs_page *entry;
-
-	list_for_each_entry(entry, &nvs_list, node)
-		if (entry->data) {
-			free_page((unsigned long)entry->data);
-			entry->data = NULL;
-			if (entry->kaddr) {
-				iounmap(entry->kaddr);
-				entry->kaddr = NULL;
-			}
-		}
-}
-
-/**
- *	hibernate_nvs_alloc - allocate memory necessary for saving NVS regions
- */
-int hibernate_nvs_alloc(void)
-{
-	struct nvs_page *entry;
-
-	list_for_each_entry(entry, &nvs_list, node) {
-		entry->data = (void *)__get_free_page(GFP_KERNEL);
-		if (!entry->data) {
-			hibernate_nvs_free();
-			return -ENOMEM;
-		}
-	}
-	return 0;
-}
-
-/**
- *	hibernate_nvs_save - save NVS memory regions
- */
-void hibernate_nvs_save(void)
-{
-	struct nvs_page *entry;
-
-	printk(KERN_INFO "PM: Saving platform NVS memory\n");
-
-	list_for_each_entry(entry, &nvs_list, node)
-		if (entry->data) {
-			entry->kaddr = ioremap(entry->phys_start, entry->size);
-			memcpy(entry->data, entry->kaddr, entry->size);
-		}
-}
-
-/**
- *	hibernate_nvs_restore - restore NVS memory regions
- *
- *	This function is going to be called with interrupts disabled, so it
- *	cannot iounmap the virtual addresses used to access the NVS region.
- */
-void hibernate_nvs_restore(void)
-{
-	struct nvs_page *entry;
-
-	printk(KERN_INFO "PM: Restoring platform NVS memory\n");
-
-	list_for_each_entry(entry, &nvs_list, node)
-		if (entry->data)
-			memcpy(entry->kaddr, entry->data, entry->size);
-}