---
 mm/vmscan.c |    9 +++++++++
 1 file changed, 9 insertions(+)

Index: linux-2.6.21-rc6/mm/vmscan.c
===================================================================
--- linux-2.6.21-rc6.orig/mm/vmscan.c	2007-04-13 23:11:03.000000000 -0700
+++ linux-2.6.21-rc6/mm/vmscan.c	2007-04-13 23:17:58.000000000 -0700
@@ -37,6 +37,7 @@
 #include <linux/delay.h>
 #include <linux/kthread.h>
 #include <linux/freezer.h>
+#include <linux/perf.h>
 
 #include <asm/tlbflush.h>
 #include <asm/div64.h>
@@ -1017,6 +1018,8 @@ static unsigned long shrink_zones(int pr
  */
 unsigned long try_to_free_pages(struct zone **zones, gfp_t gfp_mask)
 {
+	INIT_PC(pc_scanned, PC_DIRECT_RECLAIM_SCANNED);
+	INIT_PC(pc_reclaimed, PC_DIRECT_RECLAIM_RECLAIMED);
 	int priority;
 	int ret = 0;
 	unsigned long total_scanned = 0;
@@ -1098,6 +1101,8 @@ out:
 
 		zone->prev_priority = priority;
 	}
+	pc_bytes(&pc_scanned, PAGE_SIZE * sc.nr_scanned);
+	pc_bytes(&pc_reclaimed, PAGE_SIZE * nr_reclaimed);
 	return ret;
 }
 
@@ -1124,6 +1129,8 @@ out:
  */
 static unsigned long balance_pgdat(pg_data_t *pgdat, int order)
 {
+	INIT_PC(pc_reclaim_scanned, PC_RECLAIM_SCANNED);
+	INIT_PC(pc_reclaim_reclaimed, PC_RECLAIM_RECLAIMED);
 	int all_zones_ok;
 	int priority;
 	int i;
@@ -1273,6 +1280,8 @@ out:
 		goto loop_again;
 	}
 
+	pc_bytes(&pc_reclaim_scanned, total_scanned * PAGE_SIZE);
+	pc_bytes(&pc_reclaim_reclaimed, nr_reclaimed * PAGE_SIZE);
 	return nr_reclaimed;
 }