1 files changed, 0 insertions, 329 deletions
diff --git a/kernel/power/swsusp.c b/kernel/power/swsusp.c
deleted file mode 100644
index 31aa0390c77..00000000000
--- a/kernel/power/swsusp.c
+++ /dev/null
@@ -1,329 +0,0 @@
-/*
- * linux/kernel/power/swsusp.c
- *
- * This file provides code to write suspend image to swap and read it back.
- *
- * Copyright (C) 1998-2001 Gabor Kuti <seasons@fornax.hu>
- * Copyright (C) 1998,2001-2005 Pavel Machek <pavel@suse.cz>
- *
- * This file is released under the GPLv2.
- *
- * I'd like to thank the following people for their work:
- *
- * Pavel Machek <pavel@ucw.cz>:
- * Modifications, defectiveness pointing, being with me at the very beginning,
- * suspend to swap space, stop all tasks. Port to 2.4.18-ac and 2.5.17.
- *
- * Steve Doddi <dirk@loth.demon.co.uk>:
- * Support the possibility of hardware state restoring.
- *
- * Raph <grey.havens@earthling.net>:
- * Support for preserving states of network devices and virtual console
- * (including X and svgatextmode)
- *
- * Kurt Garloff <garloff@suse.de>:
- * Straightened the critical function in order to prevent compilers from
- * playing tricks with local variables.
- *
- * Andreas Mohr <a.mohr@mailto.de>
- *
- * Alex Badea <vampire@go.ro>:
- * Fixed runaway init
- *
- * Rafael J. Wysocki <rjw@sisk.pl>
- * Reworked the freeing of memory and the handling of swap
- *
- * More state savers are welcome. Especially for the scsi layer...
- *
- * For TODOs,FIXMEs also look in Documentation/power/swsusp.txt
- */
-
-#include <linux/mm.h>
-#include <linux/suspend.h>
-#include <linux/spinlock.h>
-#include <linux/kernel.h>
-#include <linux/major.h>
-#include <linux/swap.h>
-#include <linux/pm.h>
-#include <linux/swapops.h>
-#include <linux/bootmem.h>
-#include <linux/syscalls.h>
-#include <linux/highmem.h>
-#include <linux/time.h>
-
-#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;
-
-#ifdef CONFIG_HIGHMEM
-unsigned int count_highmem_pages(void);
-int restore_highmem(void);
-#else
-static inline int restore_highmem(void) { return 0; }
-static inline unsigned int count_highmem_pages(void) { return 0; }
-#endif
-
-/**
- *	The following functions are used for tracing the allocated
- *	swap pages, so that they can be freed in case of an error.
- *
- *	The functions operate on a linked bitmap structure defined
- *	in power.h
- */
-
-void free_bitmap(struct bitmap_page *bitmap)
-{
-	struct bitmap_page *bp;
-
-	while (bitmap) {
-		bp = bitmap->next;
-		free_page((unsigned long)bitmap);
-		bitmap = bp;
-	}
-}
-
-struct bitmap_page *alloc_bitmap(unsigned int nr_bits)
-{
-	struct bitmap_page *bitmap, *bp;
-	unsigned int n;
-
-	if (!nr_bits)
-		return NULL;
-
-	bitmap = (struct bitmap_page *)get_zeroed_page(GFP_KERNEL);
-	bp = bitmap;
-	for (n = BITMAP_PAGE_BITS; n < nr_bits; n += BITMAP_PAGE_BITS) {
-		bp->next = (struct bitmap_page *)get_zeroed_page(GFP_KERNEL);
-		bp = bp->next;
-		if (!bp) {
-			free_bitmap(bitmap);
-			return NULL;
-		}
-	}
-	return bitmap;
-}
-
-static int bitmap_set(struct bitmap_page *bitmap, unsigned long bit)
-{
-	unsigned int n;
-
-	n = BITMAP_PAGE_BITS;
-	while (bitmap && n <= bit) {
-		n += BITMAP_PAGE_BITS;
-		bitmap = bitmap->next;
-	}
-	if (!bitmap)
-		return -EINVAL;
-	n -= BITMAP_PAGE_BITS;
-	bit -= n;
-	n = 0;
-	while (bit >= BITS_PER_CHUNK) {
-		bit -= BITS_PER_CHUNK;
-		n++;
-	}
-	bitmap->chunks[n] |= (1UL << bit);
-	return 0;
-}
-
-sector_t alloc_swapdev_block(int swap, struct bitmap_page *bitmap)
-{
-	unsigned long offset;
-
-	offset = swp_offset(get_swap_page_of_type(swap));
-	if (offset) {
-		if (bitmap_set(bitmap, offset))
-			swap_free(swp_entry(swap, offset));
-		else
-			return swapdev_block(swap, offset);
-	}
-	return 0;
-}
-
-void free_all_swap_pages(int swap, struct bitmap_page *bitmap)
-{
-	unsigned int bit, n;
-	unsigned long test;
-
-	bit = 0;
-	while (bitmap) {
-		for (n = 0; n < BITMAP_PAGE_CHUNKS; n++)
-			for (test = 1UL; test; test <<= 1) {
-				if (bitmap->chunks[n] & test)
-					swap_free(swp_entry(swap, bit));
-				bit++;
-			}
-		bitmap = bitmap->next;
-	}
-}
-
-/**
- *	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("%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("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->free_pages;
-				} else {
-					tmp -= zone->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;
-}
-
-int swsusp_suspend(void)
-{
-	int error;
-
-	if ((error = arch_prepare_suspend()))
-		return error;
-
-	local_irq_disable();
-	/* At this point, device_suspend() has been called, but *not*
-	 * device_power_down(). We *must* device_power_down() now.
-	 * Otherwise, drivers for some devices (e.g. interrupt controllers)
-	 * become desynchronized with the actual state of the hardware
-	 * at resume time, and evil weirdness ensues.
-	 */
-	if ((error = device_power_down(PMSG_FREEZE))) {
-		printk(KERN_ERR "Some devices failed to power down, aborting suspend\n");
-		goto Enable_irqs;
-	}
-
-	save_processor_state();
-	if ((error = swsusp_arch_suspend()))
-		printk(KERN_ERR "Error %d suspending\n", error);
-	/* Restore control flow magically appears here */
-	restore_processor_state();
-	/* NOTE:  device_power_up() is just a resume() for devices
-	 * that suspended with irqs off ... no overall powerup.
-	 */
-	device_power_up();
- Enable_irqs:
-	local_irq_enable();
-	return error;
-}
-
-int swsusp_resume(void)
-{
-	int error;
-
-	local_irq_disable();
-	/* NOTE:  device_power_down() is just a suspend() with irqs off;
-	 * it has no special "power things down" semantics
-	 */
-	if (device_power_down(PMSG_PRETHAW))
-		printk(KERN_ERR "Some devices failed to power down, very bad\n");
-	/* We'll ignore saved state, but this gets preempt count (etc) right */
-	save_processor_state();
-	error = restore_highmem();
-	if (!error) {
-		error = swsusp_arch_resume();
-		/* The code below is only ever reached in case of a failure.
-		 * Otherwise execution continues at place where
-		 * swsusp_arch_suspend() was called
-        	 */
-		BUG_ON(!error);
-		/* This call to restore_highmem() undos the previous one */
-		restore_highmem();
-	}
-	/* The only reason why swsusp_arch_resume() can fail is memory being
-	 * very tight, so we have to free it as soon as we can to avoid
-	 * subsequent failures
-	 */
-	swsusp_free();
-	restore_processor_state();
-	touch_softlockup_watchdog();
-	device_power_up();
-	local_irq_enable();
-	return error;
-}