[PATCH] Use ZVC for inactive and active counts

[deliverable/linux.git] / include / linux / vmstat.h

diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h
index 3e0daf54133e165aad7bde3adfff94cf659190ad..c8d55bcc09b91e9ccc049d8ea76ad7bbd26b3bb6 100644 (file)
--- a/include/linux/vmstat.h
+++ b/include/linux/vmstat.h
@@ -3,7 +3,6 @@
 
 #include <linux/types.h>
 #include <linux/percpu.h>
-#include <linux/config.h>
 #include <linux/mmzone.h>
 #include <asm/atomic.h>
 
@@ -11,14 +10,27 @@
 /*
  * Light weight per cpu counter implementation.
  *
- * Counters should only be incremented and no critical kernel component
- * should rely on the counter values.
+ * Counters should only be incremented.  You need to set EMBEDDED
+ * to disable VM_EVENT_COUNTERS.  Things like procps (vmstat,
+ * top, etc) use /proc/vmstat and depend on these counters.
  *
  * Counters are handled completely inline. On many platforms the code
  * generated will simply be the increment of a global address.
  */
 
-#define FOR_ALL_ZONES(x) x##_DMA, x##_DMA32, x##_NORMAL, x##_HIGH
+#ifdef CONFIG_ZONE_DMA32
+#define DMA32_ZONE(xx) xx##_DMA32,
+#else
+#define DMA32_ZONE(xx)
+#endif
+
+#ifdef CONFIG_HIGHMEM
+#define HIGHMEM_ZONE(xx) , xx##_HIGH
+#else
+#define HIGHMEM_ZONE(xx)
+#endif
+
+#define FOR_ALL_ZONES(xx) xx##_DMA, DMA32_ZONE(xx) xx##_NORMAL HIGHMEM_ZONE(xx)
 
 enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
                FOR_ALL_ZONES(PGALLOC),
@@ -41,28 +53,34 @@ DECLARE_PER_CPU(struct vm_event_state, vm_event_states);
 
 static inline void __count_vm_event(enum vm_event_item item)
 {
-       __get_cpu_var(vm_event_states.event[item])++;
+       __get_cpu_var(vm_event_states).event[item]++;
 }
 
 static inline void count_vm_event(enum vm_event_item item)
 {
-       get_cpu_var(vm_event_states.event[item])++;
+       get_cpu_var(vm_event_states).event[item]++;
        put_cpu();
 }
 
 static inline void __count_vm_events(enum vm_event_item item, long delta)
 {
-       __get_cpu_var(vm_event_states.event[item]) += delta;
+       __get_cpu_var(vm_event_states).event[item] += delta;
 }
 
 static inline void count_vm_events(enum vm_event_item item, long delta)
 {
-       get_cpu_var(vm_event_states.event[item])++;
+       get_cpu_var(vm_event_states).event[item] += delta;
        put_cpu();
 }
 
 extern void all_vm_events(unsigned long *);
+#ifdef CONFIG_HOTPLUG
 extern void vm_events_fold_cpu(int cpu);
+#else
+static inline void vm_events_fold_cpu(int cpu)
+{
+}
+#endif
 
 #else
 
@@ -124,12 +142,10 @@ static inline unsigned long node_page_state(int node,
        struct zone *zones = NODE_DATA(node)->node_zones;
 
        return
-#ifndef CONFIG_DMA_IS_NORMAL
-#if !defined(CONFIG_DMA_IS_DMA32) && BITS_PER_LONG >= 64
+#ifdef CONFIG_ZONE_DMA32
                zone_page_state(&zones[ZONE_DMA32], item) +
 #endif
                zone_page_state(&zones[ZONE_NORMAL], item) +
-#endif
 #ifdef CONFIG_HIGHMEM
                zone_page_state(&zones[ZONE_HIGHMEM], item) +
 #endif
@@ -170,6 +186,9 @@ void inc_zone_page_state(struct page *, enum zone_stat_item);
 void dec_zone_page_state(struct page *, enum zone_stat_item);
 
 extern void inc_zone_state(struct zone *, enum zone_stat_item);
+extern void __inc_zone_state(struct zone *, enum zone_stat_item);
+extern void dec_zone_state(struct zone *, enum zone_stat_item);
+extern void __dec_zone_state(struct zone *, enum zone_stat_item);
 
 void refresh_cpu_vm_stats(int);
 void refresh_vm_stats(void);
@@ -186,11 +205,22 @@ static inline void __mod_zone_page_state(struct zone *zone,
        zone_page_state_add(delta, zone, item);
 }
 
+static inline void __inc_zone_state(struct zone *zone, enum zone_stat_item item)
+{
+       atomic_long_inc(&zone->vm_stat[item]);
+       atomic_long_inc(&vm_stat[item]);
+}
+
 static inline void __inc_zone_page_state(struct page *page,
                        enum zone_stat_item item)
 {
-       atomic_long_inc(&page_zone(page)->vm_stat[item]);
-       atomic_long_inc(&vm_stat[item]);
+       __inc_zone_state(page_zone(page), item);
+}
+
+static inline void __dec_zone_state(struct zone *zone, enum zone_stat_item item)
+{
+       atomic_long_dec(&zone->vm_stat[item]);
+       atomic_long_dec(&vm_stat[item]);
 }
 
 static inline void __dec_zone_page_state(struct page *page,