percpu: percpu_counter_initialized can be boolean

This patch makes percpu_counter_initialized return bool due to this
particular function only using either one or zero as its return
value.

No functional change.
Signed-off-by: guoyayun <guoyayun@cmss.chinamobile.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

include/linux/percpu_counter.h

@@ -86,7 +86,7 @@ static inline s64 percpu_counter_read_positive(struct percpu_counter *fbc)
 	return 0;
 }
 
-static inline int percpu_counter_initialized(struct percpu_counter *fbc)
+static inline bool percpu_counter_initialized(struct percpu_counter *fbc)
 {
 	return (fbc->counters != NULL);
 }
@@ -167,9 +167,9 @@ static inline s64 percpu_counter_sum(struct percpu_counter *fbc)
 	return percpu_counter_read(fbc);
 }
 
-static inline int percpu_counter_initialized(struct percpu_counter *fbc)
+static inline bool percpu_counter_initialized(struct percpu_counter *fbc)
 {
-	return 1;
+	return true;
 }
 
 #endif	/* CONFIG_SMP */