1 files changed, 11 insertions, 0 deletions

diff --git a/include/linux/percpu_counter.h b/include/linux/percpu_counter.h
index c88d67b59394..8a7d510ffa9c 100644
--- a/include/linux/percpu_counter.h
+++ b/include/linux/percpu_counter.h
@@ -40,6 +40,7 @@ void percpu_counter_destroy(struct percpu_counter *fbc);
 void percpu_counter_set(struct percpu_counter *fbc, s64 amount);
 void __percpu_counter_add(struct percpu_counter *fbc, s64 amount, s32 batch);
 s64 __percpu_counter_sum(struct percpu_counter *fbc);
+int percpu_counter_compare(struct percpu_counter *fbc, s64 rhs);
 
 static inline void percpu_counter_add(struct percpu_counter *fbc, s64 amount)
 {
@@ -98,6 +99,16 @@ static inline void percpu_counter_set(struct percpu_counter *fbc, s64 amount)
         fbc->count = amount;
 }
 
+static inline int percpu_counter_compare(struct percpu_counter *fbc, s64 rhs)
+{
+        if (fbc->count > rhs)
+                return 1;
+        else if (fbc->count < rhs)
+                return -1;
+        else
+                return 0;
+}
+
 static inline void
 percpu_counter_add(struct percpu_counter *fbc, s64 amount)
 {