diff --git a/include/linux/rcupreempt.h b/include/linux/rcupreempt.h
index 01152ed532c8..d038aa6e5ee1 100644
--- a/include/linux/rcupreempt.h
+++ b/include/linux/rcupreempt.h
@@ -87,15 +87,15 @@ DECLARE_PER_CPU(long, dynticks_progress_counter);
 
 static inline void rcu_enter_nohz(void)
 {
+	smp_mb(); /* CPUs seeing ++ must see prior RCU read-side crit sects */
 	__get_cpu_var(dynticks_progress_counter)++;
 	WARN_ON(__get_cpu_var(dynticks_progress_counter) & 0x1);
-	mb();
 }
 
 static inline void rcu_exit_nohz(void)
 {
-	mb();
 	__get_cpu_var(dynticks_progress_counter)++;
+	smp_mb(); /* CPUs seeing ++ must see later RCU read-side crit sects */
 	WARN_ON(!(__get_cpu_var(dynticks_progress_counter) & 0x1));
 }