rcu: Remove #ifdef CONFIG_SMP from TREE_RCU

Now that both TINY_RCU and TINY_PREEMPT_RCU have been in place for awhile,
it is time to remove UP support from TREE_RCU, which is what this commit
does.

Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

1 files changed, 0 insertions, 12 deletions

diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h
index 297d561c3e4b..0e74e1c6333f 100644
--- a/kernel/rcutree_plugin.h
+++ b/kernel/rcutree_plugin.h
@@ -1858,16 +1858,6 @@ static void __cpuinit rcu_prepare_kthreads(int cpu)
 
 #endif /* #else #ifdef CONFIG_RCU_BOOST */
 
-#ifndef CONFIG_SMP
-
-void synchronize_sched_expedited(void)
-{
-        cond_resched();
-}
-EXPORT_SYMBOL_GPL(synchronize_sched_expedited);
-
-#else /* #ifndef CONFIG_SMP */
-
 static atomic_t sync_sched_expedited_started = ATOMIC_INIT(0);
 static atomic_t sync_sched_expedited_done = ATOMIC_INIT(0);
 
@@ -1982,8 +1972,6 @@ void synchronize_sched_expedited(void)
 }
 EXPORT_SYMBOL_GPL(synchronize_sched_expedited);
 
-#endif /* #else #ifndef CONFIG_SMP */
-
 #if !defined(CONFIG_RCU_FAST_NO_HZ)
 
 /*