From be55fa2ad244678beed11d2827d88b7f80ff4730 Mon Sep 17 00:00:00 2001
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Date: Tue, 2 Jun 2015 05:29:18 -0700
Subject: [PATCH] rcu: Hide RCU_NOCB_CPU behind RCU_EXPERT

This commit prevents Kconfig from asking the user about RCU_NOCB_CPU
unless the user really wants to be asked.

Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
---
 init/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/init/Kconfig b/init/Kconfig
index fdeff4ab5995..ba1e6eaf4c36 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -698,6 +698,7 @@ config RCU_BOOST_DELAY
 config RCU_NOCB_CPU
 	bool "Offload RCU callback processing from boot-selected CPUs"
 	depends on TREE_RCU || PREEMPT_RCU
+	depends on RCU_EXPERT || NO_HZ_FULL
 	default n
 	help
 	  Use this option to reduce OS jitter for aggressive HPC or
-- 
2.20.1