1 files changed, 9 insertions, 0 deletions

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index d6120fa69116..543f9e411563 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -46,6 +46,9 @@ struct zone_padding {
 #define ZONE_PADDING(name)
 #endif
 
+enum zone_stat_item {
+        NR_VM_ZONE_STAT_ITEMS };
+
 struct per_cpu_pages {
         int count;              /* number of pages in the list */
         int high;               /* high watermark, emptying needed */
@@ -55,6 +58,10 @@ struct per_cpu_pages {
 
 struct per_cpu_pageset {
         struct per_cpu_pages pcp[2];    /* 0: hot.  1: cold */
+#ifdef CONFIG_SMP
+        s8 vm_stat_diff[NR_VM_ZONE_STAT_ITEMS];
+#endif
+
 #ifdef CONFIG_NUMA
         unsigned long numa_hit;         /* allocated in intended node */
         unsigned long numa_miss;        /* allocated in non intended node */
@@ -165,6 +172,8 @@ struct zone {
         /* A count of how many reclaimers are scanning this zone */
         atomic_t                reclaim_in_progress;
 
+        /* Zone statistics */
+        atomic_long_t           vm_stat[NR_VM_ZONE_STAT_ITEMS];
         /*
          * timestamp (in jiffies) of the last zone reclaim that did not
          * result in freeing of pages. This is used to avoid repeated scans