revert "percpu counter: clean up percpu_counter_sum_and_set()"

[linux-2.6-omap-h63xx.git] / lib / percpu_counter.c

diff --git a/lib/percpu_counter.c b/lib/percpu_counter.c
index 71b265c330ce364326328151a03fec07c3e9adb0..dba1530a5b2912e1fa9afb2c8c32e385b0826fc1 100644 (file)
--- a/lib/percpu_counter.c
+++ b/lib/percpu_counter.c
@@ -52,7 +52,7 @@ EXPORT_SYMBOL(__percpu_counter_add);
  * Add up all the per-cpu counts, return the result.  This is a more accurate
  * but much slower version of percpu_counter_read_positive()
  */
-s64 __percpu_counter_sum(struct percpu_counter *fbc)
+s64 __percpu_counter_sum(struct percpu_counter *fbc, int set)
 {
        s64 ret;
        int cpu;
@@ -62,9 +62,11 @@ s64 __percpu_counter_sum(struct percpu_counter *fbc)
        for_each_online_cpu(cpu) {
                s32 *pcount = per_cpu_ptr(fbc->counters, cpu);
                ret += *pcount;
-               *pcount = 0;
+               if (set)
+                       *pcount = 0;
        }
-       fbc->count = ret;
+       if (set)
+               fbc->count = ret;
 
        spin_unlock(&fbc->lock);
        return ret;