Both functions that update global counters use the same mechanism.
Create a function that contains the common code.
Signed-off-by: Christoph Lameter <cl@xxxxxxxxx>
Index: linux/mm/vmstat.c
===================================================================
--- linux.orig/mm/vmstat.c 2013-07-26 10:37:11.004503227 -0500
+++ linux/mm/vmstat.c 2013-07-26 10:37:11.000503146 -0500
@@ -414,6 +414,15 @@ void dec_zone_page_state(struct page *pa
EXPORT_SYMBOL(dec_zone_page_state);
#endif
+static inline void fold_diff(int *diff)
+{
+ int i;
+
+ for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++)
+ if (diff[i])
+ atomic_long_add(diff[i], &vm_stat[i]);
+}
+
/*
* Update the zone counters for the current cpu.
*
@@ -483,10 +492,7 @@ static void refresh_cpu_vm_stats(int cpu
drain_zone_pages(zone, &p->pcp);
#endif
}
-
- for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++)
- if (global_diff[i])
- atomic_long_add(global_diff[i], &vm_stat[i]);
+ fold_diff(global_diff);
}
/*
@@ -516,9 +522,7 @@ void cpu_vm_stats_fold(int cpu)
}
}
- for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++)
- if (global_diff[i])
- atomic_long_add(global_diff[i], &vm_stat[i]);
+ fold_diff(global_diff);
}
/*
--
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