From 8609b5cc3dc15e259b462a438f7b608b42504cf8 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 28 Oct 2012 13:26:09 +0000
Subject: [PATCH 272/274] rcu: Disable RCU_FAST_NO_HZ on RT

This uses a timer_list timer from the irq disabled guts of the idle
code. Disable it for now to prevent wreckage.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable-rt@vger.kernel.org
---
 init/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/init/Kconfig b/init/Kconfig
index c06208b..87afda5 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -474,7 +474,7 @@ config RCU_FANOUT_EXACT
 
 config RCU_FAST_NO_HZ
 	bool "Accelerate last non-dyntick-idle CPU's grace periods"
-	depends on NO_HZ && SMP
+	depends on NO_HZ && SMP && !PREEMPT_RT_FULL
 	default n
 	help
 	  This option causes RCU to attempt to accelerate grace periods
-- 
1.7.10.4