commit 17672480fb1e953f999623b598a98130f8aacfbc
author Yury Norov <ynorov@caviumnetworks.com> Sun Mar 25 20:50:03 2018 +0300
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> Tue May 15 10:27:51 2018 -0700
tree 083aec21ddc8eb7e12a6fc45fd35a7f34b5fcc15
parent 265f5f28f042fee66531f9f647c9d78e997995b6

rcu: Declare rcu_eqs_special_set() in public header

Because rcu_eqs_special_set() is declared only in internal header
kernel/rcu/tree.h and stubbed in include/linux/rcutiny.h, it is
inaccessible outside of the RCU implementation.  This patch therefore
moves the  rcu_eqs_special_set() declaration to include/linux/rcutree.h,
which allows it to be used in non-rcu kernel code.

Signed-off-by: Yury Norov <ynorov@caviumnetworks.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Nicholas Piggin <npiggin@gmail.com>

include/linux/rcutree.h

diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h
index fd996cd..448f20f 100644
--- a/include/linux/rcutree.h
+++ b/include/linux/rcutree.h
@@ -74,6 +74,7 @@ static inline void synchronize_rcu_bh_expedited(void)
 void rcu_barrier(void);
 void rcu_barrier_bh(void);
 void rcu_barrier_sched(void);
+bool rcu_eqs_special_set(int cpu);
 unsigned long get_state_synchronize_rcu(void);
 void cond_synchronize_rcu(unsigned long oldstate);
 unsigned long get_state_synchronize_sched(void);

kernel/rcu/tree.h

diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
index 5fd374c..0b3a90eb 100644
--- a/kernel/rcu/tree.h
+++ b/kernel/rcu/tree.h
@@ -404,7 +404,6 @@ extern struct rcu_state rcu_preempt_state;
 #endif /* #ifdef CONFIG_PREEMPT_RCU */
 
 int rcu_dynticks_snap(struct rcu_dynticks *rdtp);
-bool rcu_eqs_special_set(int cpu);
 
 #ifdef CONFIG_RCU_BOOST
 DECLARE_PER_CPU(unsigned int, rcu_cpu_kthread_status);