diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c
index 61bc446..2476ca7 100644
--- a/arch/s390/appldata/appldata_base.c
+++ b/arch/s390/appldata/appldata_base.c
@@ -766,7 +766,6 @@
 #endif /* MODULE */
 EXPORT_SYMBOL_GPL(si_swapinfo);
 EXPORT_SYMBOL_GPL(nr_threads);
-EXPORT_SYMBOL_GPL(get_full_page_state);
 EXPORT_SYMBOL_GPL(nr_running);
 EXPORT_SYMBOL_GPL(nr_iowait);
 //EXPORT_SYMBOL_GPL(nr_context_switches);
diff --git a/arch/s390/appldata/appldata_mem.c b/arch/s390/appldata/appldata_mem.c
index 180ba79..4811e2d 100644
--- a/arch/s390/appldata/appldata_mem.c
+++ b/arch/s390/appldata/appldata_mem.c
@@ -107,21 +107,21 @@
 	 * serialized through the appldata_ops_lock and can use static
 	 */
 	static struct sysinfo val;
-	static struct page_state ps;
+	unsigned long ev[NR_VM_EVENT_ITEMS];
 	struct appldata_mem_data *mem_data;
 
 	mem_data = data;
 	mem_data->sync_count_1++;
 
-	get_full_page_state(&ps);
-	mem_data->pgpgin     = ps.pgpgin >> 1;
-	mem_data->pgpgout    = ps.pgpgout >> 1;
-	mem_data->pswpin     = ps.pswpin;
-	mem_data->pswpout    = ps.pswpout;
-	mem_data->pgalloc    = ps.pgalloc_high + ps.pgalloc_normal +
-			       ps.pgalloc_dma;
-	mem_data->pgfault    = ps.pgfault;
-	mem_data->pgmajfault = ps.pgmajfault;
+	all_vm_events(ev);
+	mem_data->pgpgin     = ev[PGPGIN] >> 1;
+	mem_data->pgpgout    = ev[PGPGOUT] >> 1;
+	mem_data->pswpin     = ev[PSWPIN];
+	mem_data->pswpout    = ev[PSWPOUT];
+	mem_data->pgalloc    = ev[PGALLOC_HIGH] + ev[PGALLOC_NORMAL] +
+			       ev[PGALLOC_DMA];
+	mem_data->pgfault    = ev[PGFAULT];
+	mem_data->pgmajfault = ev[PGMAJFAULT];
 
 	si_meminfo(&val);
 	mem_data->sharedram = val.sharedram;
diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index eee03a3..fb83547 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -3117,9 +3117,9 @@
 	BIO_BUG_ON(!bio->bi_io_vec);
 	bio->bi_rw |= rw;
 	if (rw & WRITE)
-		mod_page_state(pgpgout, count);
+		count_vm_events(PGPGOUT, count);
 	else
-		mod_page_state(pgpgin, count);
+		count_vm_events(PGPGIN, count);
 
 	if (unlikely(block_dump)) {
 		char b[BDEVNAME_SIZE];
diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c
index 298f2dd..d7024c7 100644
--- a/drivers/parisc/led.c
+++ b/drivers/parisc/led.c
@@ -411,16 +411,17 @@
 static __inline__ int led_get_diskio_activity(void)
 {	
 	static unsigned long last_pgpgin, last_pgpgout;
-	struct page_state pgstat;
+	unsigned long events[NR_VM_EVENT_ITEMS];
 	int changed;
 
-	get_full_page_state(&pgstat); /* get no of sectors in & out */
+	all_vm_events(events);
 
 	/* Just use a very simple calculation here. Do not care about overflow,
 	   since we only want to know if there was activity or not. */
-	changed = (pgstat.pgpgin != last_pgpgin) || (pgstat.pgpgout != last_pgpgout);
-	last_pgpgin  = pgstat.pgpgin;
-	last_pgpgout = pgstat.pgpgout;
+	changed = (events[PGPGIN] != last_pgpgin) ||
+		  (events[PGPGOUT] != last_pgpgout);
+	last_pgpgin  = events[PGPGIN];
+	last_pgpgout = events[PGPGOUT];
 
 	return (changed ? LED_DISK_IO : 0);
 }
diff --git a/fs/inode.c b/fs/inode.c
index f42961e..14a6c41 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -452,15 +452,14 @@
 		nr_pruned++;
 	}
 	inodes_stat.nr_unused -= nr_pruned;
+	if (current_is_kswapd())
+		__count_vm_events(KSWAPD_INODESTEAL, reap);
+	else
+		__count_vm_events(PGINODESTEAL, reap);
 	spin_unlock(&inode_lock);
 
 	dispose_list(&freeable);
 	mutex_unlock(&iprune_mutex);
-
-	if (current_is_kswapd())
-		mod_page_state(kswapd_inodesteal, reap);
-	else
-		mod_page_state(pginodesteal, reap);
 }
 
 /*
diff --git a/fs/ncpfs/mmap.c b/fs/ncpfs/mmap.c
index 52d60c3..e7d5a30 100644
--- a/fs/ncpfs/mmap.c
+++ b/fs/ncpfs/mmap.c
@@ -93,7 +93,7 @@
 	 */
 	if (type)
 		*type = VM_FAULT_MAJOR;
-	inc_page_state(pgmajfault);
+	count_vm_event(PGMAJFAULT);
 	return page;
 }
 
diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h
index 16173b6..3e0daf5 100644
--- a/include/linux/vmstat.h
+++ b/include/linux/vmstat.h
@@ -7,115 +7,77 @@
 #include <linux/mmzone.h>
 #include <asm/atomic.h>
 
+#ifdef CONFIG_VM_EVENT_COUNTERS
 /*
- * Global page accounting.  One instance per CPU.  Only unsigned longs are
- * allowed.
+ * Light weight per cpu counter implementation.
  *
- * - Fields can be modified with xxx_page_state and xxx_page_state_zone at
- * any time safely (which protects the instance from modification by
- * interrupt.
- * - The __xxx_page_state variants can be used safely when interrupts are
- * disabled.
- * - The __xxx_page_state variants can be used if the field is only
- * modified from process context and protected from preemption, or only
- * modified from interrupt context.  In this case, the field should be
- * commented here.
+ * Counters should only be incremented and no critical kernel component
+ * should rely on the counter values.
+ *
+ * Counters are handled completely inline. On many platforms the code
+ * generated will simply be the increment of a global address.
  */
-struct page_state {
-	unsigned long pgpgin;		/* Disk reads */
-	unsigned long pgpgout;		/* Disk writes */
-	unsigned long pswpin;		/* swap reads */
-	unsigned long pswpout;		/* swap writes */
 
-	unsigned long pgalloc_high;	/* page allocations */
-	unsigned long pgalloc_normal;
-	unsigned long pgalloc_dma32;
-	unsigned long pgalloc_dma;
+#define FOR_ALL_ZONES(x) x##_DMA, x##_DMA32, x##_NORMAL, x##_HIGH
 
-	unsigned long pgfree;		/* page freeings */
-	unsigned long pgactivate;	/* pages moved inactive->active */
-	unsigned long pgdeactivate;	/* pages moved active->inactive */
-
-	unsigned long pgfault;		/* faults (major+minor) */
-	unsigned long pgmajfault;	/* faults (major only) */
-
-	unsigned long pgrefill_high;	/* inspected in refill_inactive_zone */
-	unsigned long pgrefill_normal;
-	unsigned long pgrefill_dma32;
-	unsigned long pgrefill_dma;
-
-	unsigned long pgsteal_high;	/* total highmem pages reclaimed */
-	unsigned long pgsteal_normal;
-	unsigned long pgsteal_dma32;
-	unsigned long pgsteal_dma;
-
-	unsigned long pgscan_kswapd_high;/* total highmem pages scanned */
-	unsigned long pgscan_kswapd_normal;
-	unsigned long pgscan_kswapd_dma32;
-	unsigned long pgscan_kswapd_dma;
-
-	unsigned long pgscan_direct_high;/* total highmem pages scanned */
-	unsigned long pgscan_direct_normal;
-	unsigned long pgscan_direct_dma32;
-	unsigned long pgscan_direct_dma;
-
-	unsigned long pginodesteal;	/* pages reclaimed via inode freeing */
-	unsigned long slabs_scanned;	/* slab objects scanned */
-	unsigned long kswapd_steal;	/* pages reclaimed by kswapd */
-	unsigned long kswapd_inodesteal;/* reclaimed via kswapd inode freeing */
-	unsigned long pageoutrun;	/* kswapd's calls to page reclaim */
-	unsigned long allocstall;	/* direct reclaim calls */
-
-	unsigned long pgrotated;	/* pages rotated to tail of the LRU */
+enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
+		FOR_ALL_ZONES(PGALLOC),
+		PGFREE, PGACTIVATE, PGDEACTIVATE,
+		PGFAULT, PGMAJFAULT,
+		FOR_ALL_ZONES(PGREFILL),
+		FOR_ALL_ZONES(PGSTEAL),
+		FOR_ALL_ZONES(PGSCAN_KSWAPD),
+		FOR_ALL_ZONES(PGSCAN_DIRECT),
+		PGINODESTEAL, SLABS_SCANNED, KSWAPD_STEAL, KSWAPD_INODESTEAL,
+		PAGEOUTRUN, ALLOCSTALL, PGROTATED,
+		NR_VM_EVENT_ITEMS
 };
 
-extern void get_full_page_state(struct page_state *ret);
-extern void mod_page_state_offset(unsigned long offset, unsigned long delta);
-extern void __mod_page_state_offset(unsigned long offset, unsigned long delta);
+struct vm_event_state {
+	unsigned long event[NR_VM_EVENT_ITEMS];
+};
 
-#define mod_page_state(member, delta)	\
-	mod_page_state_offset(offsetof(struct page_state, member), (delta))
+DECLARE_PER_CPU(struct vm_event_state, vm_event_states);
 
-#define __mod_page_state(member, delta)	\
-	__mod_page_state_offset(offsetof(struct page_state, member), (delta))
+static inline void __count_vm_event(enum vm_event_item item)
+{
+	__get_cpu_var(vm_event_states.event[item])++;
+}
 
-#define inc_page_state(member)		mod_page_state(member, 1UL)
-#define dec_page_state(member)		mod_page_state(member, 0UL - 1)
-#define add_page_state(member,delta)	mod_page_state(member, (delta))
-#define sub_page_state(member,delta)	mod_page_state(member, 0UL - (delta))
+static inline void count_vm_event(enum vm_event_item item)
+{
+	get_cpu_var(vm_event_states.event[item])++;
+	put_cpu();
+}
 
-#define __inc_page_state(member)	__mod_page_state(member, 1UL)
-#define __dec_page_state(member)	__mod_page_state(member, 0UL - 1)
-#define __add_page_state(member,delta)	__mod_page_state(member, (delta))
-#define __sub_page_state(member,delta)	__mod_page_state(member, 0UL - (delta))
+static inline void __count_vm_events(enum vm_event_item item, long delta)
+{
+	__get_cpu_var(vm_event_states.event[item]) += delta;
+}
 
-#define page_state(member) (*__page_state(offsetof(struct page_state, member)))
+static inline void count_vm_events(enum vm_event_item item, long delta)
+{
+	get_cpu_var(vm_event_states.event[item])++;
+	put_cpu();
+}
 
-#define state_zone_offset(zone, member)					\
-({									\
-	unsigned offset;						\
-	if (is_highmem(zone))						\
-		offset = offsetof(struct page_state, member##_high);	\
-	else if (is_normal(zone))					\
-		offset = offsetof(struct page_state, member##_normal);	\
-	else if (is_dma32(zone))					\
-		offset = offsetof(struct page_state, member##_dma32);	\
-	else								\
-		offset = offsetof(struct page_state, member##_dma);	\
-	offset;								\
-})
+extern void all_vm_events(unsigned long *);
+extern void vm_events_fold_cpu(int cpu);
 
-#define __mod_page_state_zone(zone, member, delta)			\
- do {									\
-	__mod_page_state_offset(state_zone_offset(zone, member), (delta)); \
- } while (0)
+#else
 
-#define mod_page_state_zone(zone, member, delta)			\
- do {									\
-	mod_page_state_offset(state_zone_offset(zone, member), (delta)); \
- } while (0)
+/* Disable counters */
+#define get_cpu_vm_events(e)	0L
+#define count_vm_event(e)	do { } while (0)
+#define count_vm_events(e,d)	do { } while (0)
+#define __count_vm_event(e)	do { } while (0)
+#define __count_vm_events(e,d)	do { } while (0)
+#define vm_events_fold_cpu(x)	do { } while (0)
 
-DECLARE_PER_CPU(struct page_state, page_states);
+#endif /* CONFIG_VM_EVENT_COUNTERS */
+
+#define __count_zone_vm_events(item, zone, delta) \
+			__count_vm_events(item##_DMA + zone_idx(zone), delta)
 
 /*
  * Zone based page accounting with per cpu differentials.
diff --git a/init/Kconfig b/init/Kconfig
index f70f2fd..f515948 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -379,6 +379,15 @@
 	  SLOB is more space efficient but does not scale well and is
 	  more susceptible to fragmentation.
 
+config VM_EVENT_COUNTERS
+	default y
+	bool "Enable VM event counters for /proc/vmstat" if EMBEDDED
+	help
+	  VM event counters are only needed to for event counts to be
+	  shown. They have no function for the kernel itself. This
+	  option allows the disabling of the VM event counters.
+	  /proc/vmstat will only show page counts.
+
 endmenu		# General setup
 
 config TINY_SHMEM
diff --git a/mm/filemap.c b/mm/filemap.c
index 87d62c4..796a547 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1416,7 +1416,7 @@
 		 */
 		if (!did_readaround) {
 			majmin = VM_FAULT_MAJOR;
-			inc_page_state(pgmajfault);
+			count_vm_event(PGMAJFAULT);
 		}
 		did_readaround = 1;
 		ra_pages = max_sane_readahead(file->f_ra.ra_pages);
@@ -1487,7 +1487,7 @@
 page_not_uptodate:
 	if (!did_readaround) {
 		majmin = VM_FAULT_MAJOR;
-		inc_page_state(pgmajfault);
+		count_vm_event(PGMAJFAULT);
 	}
 	lock_page(page);
 
diff --git a/mm/memory.c b/mm/memory.c
index 1a78791..7e2a4b1 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1951,7 +1951,7 @@
 
 		/* Had to read the page from swap area: Major fault */
 		ret = VM_FAULT_MAJOR;
-		inc_page_state(pgmajfault);
+		count_vm_event(PGMAJFAULT);
 		grab_swap_token();
 	}
 
@@ -2324,7 +2324,7 @@
 
 	__set_current_state(TASK_RUNNING);
 
-	inc_page_state(pgfault);
+	count_vm_event(PGFAULT);
 
 	if (unlikely(is_vm_hugetlb_page(vma)))
 		return hugetlb_fault(mm, vma, address, write_access);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index d616712..30b0b97 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -456,7 +456,7 @@
 
 	kernel_map_pages(page, 1 << order, 0);
 	local_irq_save(flags);
-	__mod_page_state(pgfree, 1 << order);
+	__count_vm_events(PGFREE, 1 << order);
 	free_one_page(page_zone(page), page, order);
 	local_irq_restore(flags);
 }
@@ -729,7 +729,7 @@
 
 	pcp = &zone_pcp(zone, get_cpu())->pcp[cold];
 	local_irq_save(flags);
-	__inc_page_state(pgfree);
+	__count_vm_event(PGFREE);
 	list_add(&page->lru, &pcp->list);
 	pcp->count++;
 	if (pcp->count >= pcp->high) {
@@ -805,7 +805,7 @@
 			goto failed;
 	}
 
-	__mod_page_state_zone(zone, pgalloc, 1 << order);
+	__count_zone_vm_events(PGALLOC, zone, 1 << order);
 	zone_statistics(zonelist, zone);
 	local_irq_restore(flags);
 	put_cpu();
@@ -2101,24 +2101,11 @@
 				 unsigned long action, void *hcpu)
 {
 	int cpu = (unsigned long)hcpu;
-	unsigned long *src, *dest;
 
 	if (action == CPU_DEAD) {
-		int i;
-
 		local_irq_disable();
 		__drain_pages(cpu);
-
-		/* Add dead cpu's page_states to our own. */
-		dest = (unsigned long *)&__get_cpu_var(page_states);
-		src = (unsigned long *)&per_cpu(page_states, cpu);
-
-		for (i = 0; i < sizeof(struct page_state)/sizeof(unsigned long);
-				i++) {
-			dest[i] += src[i];
-			src[i] = 0;
-		}
-
+		vm_events_fold_cpu(cpu);
 		local_irq_enable();
 		refresh_cpu_vm_stats(cpu);
 	}
diff --git a/mm/page_io.c b/mm/page_io.c
index bb2b0d5..8802994 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -101,7 +101,7 @@
 	}
 	if (wbc->sync_mode == WB_SYNC_ALL)
 		rw |= (1 << BIO_RW_SYNC);
-	inc_page_state(pswpout);
+	count_vm_event(PSWPOUT);
 	set_page_writeback(page);
 	unlock_page(page);
 	submit_bio(rw, bio);
@@ -123,7 +123,7 @@
 		ret = -ENOMEM;
 		goto out;
 	}
-	inc_page_state(pswpin);
+	count_vm_event(PSWPIN);
 	submit_bio(READ, bio);
 out:
 	return ret;
diff --git a/mm/shmem.c b/mm/shmem.c
index b14ff81..a9c09e0 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1045,12 +1045,12 @@
 		swappage = lookup_swap_cache(swap);
 		if (!swappage) {
 			shmem_swp_unmap(entry);
-			spin_unlock(&info->lock);
 			/* here we actually do the io */
 			if (type && *type == VM_FAULT_MINOR) {
-				inc_page_state(pgmajfault);
+				__count_vm_event(PGMAJFAULT);
 				*type = VM_FAULT_MAJOR;
 			}
+			spin_unlock(&info->lock);
 			swappage = shmem_swapin(info, swap, idx);
 			if (!swappage) {
 				spin_lock(&info->lock);
diff --git a/mm/swap.c b/mm/swap.c
index 990868a..8fd095c 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -87,7 +87,7 @@
 	spin_lock_irqsave(&zone->lru_lock, flags);
 	if (PageLRU(page) && !PageActive(page)) {
 		list_move_tail(&page->lru, &zone->inactive_list);
-		inc_page_state(pgrotated);
+		__count_vm_event(PGROTATED);
 	}
 	if (!test_clear_page_writeback(page))
 		BUG();
@@ -107,7 +107,7 @@
 		del_page_from_inactive_list(zone, page);
 		SetPageActive(page);
 		add_page_to_active_list(zone, page);
-		inc_page_state(pgactivate);
+		__count_vm_event(PGACTIVATE);
 	}
 	spin_unlock_irq(&zone->lru_lock);
 }
diff --git a/mm/vmscan.c b/mm/vmscan.c
index d694243..ff2ebe9 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -215,7 +215,7 @@
 				break;
 			if (shrink_ret < nr_before)
 				ret += nr_before - shrink_ret;
-			mod_page_state(slabs_scanned, this_scan);
+			count_vm_events(SLABS_SCANNED, this_scan);
 			total_scan -= this_scan;
 
 			cond_resched();
@@ -569,7 +569,7 @@
 	list_splice(&ret_pages, page_list);
 	if (pagevec_count(&freed_pvec))
 		__pagevec_release_nonlru(&freed_pvec);
-	mod_page_state(pgactivate, pgactivate);
+	count_vm_events(PGACTIVATE, pgactivate);
 	return nr_reclaimed;
 }
 
@@ -659,11 +659,11 @@
 		nr_reclaimed += nr_freed;
 		local_irq_disable();
 		if (current_is_kswapd()) {
-			__mod_page_state_zone(zone, pgscan_kswapd, nr_scan);
-			__mod_page_state(kswapd_steal, nr_freed);
+			__count_zone_vm_events(PGSCAN_KSWAPD, zone, nr_scan);
+			__count_vm_events(KSWAPD_STEAL, nr_freed);
 		} else
-			__mod_page_state_zone(zone, pgscan_direct, nr_scan);
-		__mod_page_state_zone(zone, pgsteal, nr_freed);
+			__count_zone_vm_events(PGSCAN_DIRECT, zone, nr_scan);
+		__count_vm_events(PGACTIVATE, nr_freed);
 
 		if (nr_taken == 0)
 			goto done;
@@ -841,11 +841,10 @@
 		}
 	}
 	zone->nr_active += pgmoved;
-	spin_unlock(&zone->lru_lock);
 
-	__mod_page_state_zone(zone, pgrefill, pgscanned);
-	__mod_page_state(pgdeactivate, pgdeactivate);
-	local_irq_enable();
+	__count_zone_vm_events(PGREFILL, zone, pgscanned);
+	__count_vm_events(PGDEACTIVATE, pgdeactivate);
+	spin_unlock_irq(&zone->lru_lock);
 
 	pagevec_release(&pvec);
 }
@@ -977,7 +976,7 @@
 		.swappiness = vm_swappiness,
 	};
 
-	inc_page_state(allocstall);
+	count_vm_event(ALLOCSTALL);
 
 	for (i = 0; zones[i] != NULL; i++) {
 		struct zone *zone = zones[i];
@@ -1074,7 +1073,7 @@
 	total_scanned = 0;
 	nr_reclaimed = 0;
 	sc.may_writepage = !laptop_mode;
-	inc_page_state(pageoutrun);
+	count_vm_event(PAGEOUTRUN);
 
 	for (i = 0; i < pgdat->nr_zones; i++) {
 		struct zone *zone = pgdat->node_zones + i;
diff --git a/mm/vmstat.c b/mm/vmstat.c
index ee7f896..73b83d6 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -13,66 +13,6 @@
 #include <linux/mm.h>
 #include <linux/module.h>
 
-/*
- * Accumulate the page_state information across all CPUs.
- * The result is unavoidably approximate - it can change
- * during and after execution of this function.
- */
-DEFINE_PER_CPU(struct page_state, page_states) = {0};
-
-static void __get_page_state(struct page_state *ret, int nr, cpumask_t *cpumask)
-{
-	unsigned cpu;
-
-	memset(ret, 0, nr * sizeof(unsigned long));
-	cpus_and(*cpumask, *cpumask, cpu_online_map);
-
-	for_each_cpu_mask(cpu, *cpumask) {
-		unsigned long *in;
-		unsigned long *out;
-		unsigned off;
-		unsigned next_cpu;
-
-		in = (unsigned long *)&per_cpu(page_states, cpu);
-
-		next_cpu = next_cpu(cpu, *cpumask);
-		if (likely(next_cpu < NR_CPUS))
-			prefetch(&per_cpu(page_states, next_cpu));
-
-		out = (unsigned long *)ret;
-		for (off = 0; off < nr; off++)
-			*out++ += *in++;
-	}
-}
-
-void get_full_page_state(struct page_state *ret)
-{
-	cpumask_t mask = CPU_MASK_ALL;
-
-	__get_page_state(ret, sizeof(*ret) / sizeof(unsigned long), &mask);
-}
-
-void __mod_page_state_offset(unsigned long offset, unsigned long delta)
-{
-	void *ptr;
-
-	ptr = &__get_cpu_var(page_states);
-	*(unsigned long *)(ptr + offset) += delta;
-}
-EXPORT_SYMBOL(__mod_page_state_offset);
-
-void mod_page_state_offset(unsigned long offset, unsigned long delta)
-{
-	unsigned long flags;
-	void *ptr;
-
-	local_irq_save(flags);
-	ptr = &__get_cpu_var(page_states);
-	*(unsigned long *)(ptr + offset) += delta;
-	local_irq_restore(flags);
-}
-EXPORT_SYMBOL(mod_page_state_offset);
-
 void __get_zone_counts(unsigned long *active, unsigned long *inactive,
 			unsigned long *free, struct pglist_data *pgdat)
 {
@@ -106,6 +46,63 @@
 	}
 }
 
+#ifdef CONFIG_VM_EVENT_COUNTERS
+DEFINE_PER_CPU(struct vm_event_state, vm_event_states) = {{0}};
+EXPORT_PER_CPU_SYMBOL(vm_event_states);
+
+static void sum_vm_events(unsigned long *ret, cpumask_t *cpumask)
+{
+	int cpu = 0;
+	int i;
+
+	memset(ret, 0, NR_VM_EVENT_ITEMS * sizeof(unsigned long));
+
+	cpu = first_cpu(*cpumask);
+	while (cpu < NR_CPUS) {
+		struct vm_event_state *this = &per_cpu(vm_event_states, cpu);
+
+		cpu = next_cpu(cpu, *cpumask);
+
+		if (cpu < NR_CPUS)
+			prefetch(&per_cpu(vm_event_states, cpu));
+
+
+		for (i = 0; i < NR_VM_EVENT_ITEMS; i++)
+			ret[i] += this->event[i];
+	}
+}
+
+/*
+ * Accumulate the vm event counters across all CPUs.
+ * The result is unavoidably approximate - it can change
+ * during and after execution of this function.
+*/
+void all_vm_events(unsigned long *ret)
+{
+	sum_vm_events(ret, &cpu_online_map);
+}
+
+#ifdef CONFIG_HOTPLUG
+/*
+ * Fold the foreign cpu events into our own.
+ *
+ * This is adding to the events on one processor
+ * but keeps the global counts constant.
+ */
+void vm_events_fold_cpu(int cpu)
+{
+	struct vm_event_state *fold_state = &per_cpu(vm_event_states, cpu);
+	int i;
+
+	for (i = 0; i < NR_VM_EVENT_ITEMS; i++) {
+		count_vm_events(i, fold_state->event[i]);
+		fold_state->event[i] = 0;
+	}
+}
+#endif /* CONFIG_HOTPLUG */
+
+#endif /* CONFIG_VM_EVENT_COUNTERS */
+
 /*
  * Manage combined zone based / global counters
  *
@@ -405,16 +402,16 @@
 	"numa_other",
 #endif
 
-	/* Event counters */
+#ifdef CONFIG_VM_EVENT_COUNTERS
 	"pgpgin",
 	"pgpgout",
 	"pswpin",
 	"pswpout",
 
-	"pgalloc_high",
-	"pgalloc_normal",
-	"pgalloc_dma32",
 	"pgalloc_dma",
+	"pgalloc_dma32",
+	"pgalloc_normal",
+	"pgalloc_high",
 
 	"pgfree",
 	"pgactivate",
@@ -423,25 +420,25 @@
 	"pgfault",
 	"pgmajfault",
 
-	"pgrefill_high",
-	"pgrefill_normal",
-	"pgrefill_dma32",
 	"pgrefill_dma",
+	"pgrefill_dma32",
+	"pgrefill_normal",
+	"pgrefill_high",
 
-	"pgsteal_high",
-	"pgsteal_normal",
-	"pgsteal_dma32",
 	"pgsteal_dma",
+	"pgsteal_dma32",
+	"pgsteal_normal",
+	"pgsteal_high",
 
-	"pgscan_kswapd_high",
-	"pgscan_kswapd_normal",
-	"pgscan_kswapd_dma32",
 	"pgscan_kswapd_dma",
+	"pgscan_kswapd_dma32",
+	"pgscan_kswapd_normal",
+	"pgscan_kswapd_high",
 
-	"pgscan_direct_high",
-	"pgscan_direct_normal",
-	"pgscan_direct_dma32",
 	"pgscan_direct_dma",
+	"pgscan_direct_dma32",
+	"pgscan_direct_normal",
+	"pgscan_direct_high",
 
 	"pginodesteal",
 	"slabs_scanned",
@@ -451,6 +448,7 @@
 	"allocstall",
 
 	"pgrotated",
+#endif
 };
 
 /*
@@ -553,23 +551,32 @@
 static void *vmstat_start(struct seq_file *m, loff_t *pos)
 {
 	unsigned long *v;
-	struct page_state *ps;
+#ifdef CONFIG_VM_EVENT_COUNTERS
+	unsigned long *e;
+#endif
 	int i;
 
 	if (*pos >= ARRAY_SIZE(vmstat_text))
 		return NULL;
 
+#ifdef CONFIG_VM_EVENT_COUNTERS
 	v = kmalloc(NR_VM_ZONE_STAT_ITEMS * sizeof(unsigned long)
-			+ sizeof(*ps), GFP_KERNEL);
+			+ sizeof(struct vm_event_state), GFP_KERNEL);
+#else
+	v = kmalloc(NR_VM_ZONE_STAT_ITEMS * sizeof(unsigned long),
+			GFP_KERNEL);
+#endif
 	m->private = v;
 	if (!v)
 		return ERR_PTR(-ENOMEM);
 	for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++)
 		v[i] = global_page_state(i);
-	ps = (struct page_state *)(v + NR_VM_ZONE_STAT_ITEMS);
-	get_full_page_state(ps);
-	ps->pgpgin /= 2;		/* sectors -> kbytes */
-	ps->pgpgout /= 2;
+#ifdef CONFIG_VM_EVENT_COUNTERS
+	e = v + NR_VM_ZONE_STAT_ITEMS;
+	all_vm_events(e);
+	e[PGPGIN] /= 2;		/* sectors -> kbytes */
+	e[PGPGOUT] /= 2;
+#endif
 	return v + *pos;
 }