1 files changed, 8 insertions, 3 deletions

diff --git a/include/linux/rcupreempt.h b/include/linux/rcupreempt.h
index 0967f03b0705..3e05c09b54a2 100644
--- a/include/linux/rcupreempt.h
+++ b/include/linux/rcupreempt.h
@@ -57,7 +57,13 @@ static inline void rcu_qsctr_inc(int cpu)
         rdssp->sched_qs++;
 }
 #define rcu_bh_qsctr_inc(cpu)
-#define call_rcu_bh(head, rcu) call_rcu(head, rcu)
+
+/*
+ * Someone might want to pass call_rcu_bh as a function pointer.
+ * So this needs to just be a rename and not a macro function.
+ *  (no parentheses)
+ */
+#define call_rcu_bh             call_rcu
 
 /**
  * call_rcu_sched - Queue RCU callback for invocation after sched grace period.
@@ -111,7 +117,6 @@ extern struct rcupreempt_trace *rcupreempt_trace_cpu(int cpu);
 struct softirq_action;
 
 #ifdef CONFIG_NO_HZ
-DECLARE_PER_CPU(struct rcu_dyntick_sched, rcu_dyntick_sched);
 
 static inline void rcu_enter_nohz(void)
 {
@@ -126,8 +131,8 @@ static inline void rcu_exit_nohz(void)
 {
         static DEFINE_RATELIMIT_STATE(rs, 10 * HZ, 1);
 
-        smp_mb(); /* CPUs seeing ++ must see later RCU read-side crit sects */
         __get_cpu_var(rcu_dyntick_sched).dynticks++;
+        smp_mb(); /* CPUs seeing ++ must see later RCU read-side crit sects */
         WARN_ON_RATELIMIT(!(__get_cpu_var(rcu_dyntick_sched).dynticks & 0x1),
                                 &rs);
 }