Subject: genirq-force-threading.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 03 Apr 2011 11:57:29 +0200

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 include/linux/interrupt.h |    8 ++++++--
 kernel/irq/manage.c       |    2 ++
 2 files changed, 8 insertions(+), 2 deletions(-)

Index: linux-stable/include/linux/interrupt.h
===================================================================
--- linux-stable.orig/include/linux/interrupt.h
+++ linux-stable/include/linux/interrupt.h
@@ -388,9 +388,13 @@ static inline int disable_irq_wake(unsig
 
 
 #ifdef CONFIG_IRQ_FORCED_THREADING
-extern bool force_irqthreads;
+# ifndef CONFIG_PREEMPT_RT_BASE
+   extern bool force_irqthreads;
+# else
+#  define force_irqthreads	(true)
+# endif
 #else
-#define force_irqthreads	(0)
+#define force_irqthreads	(false)
 #endif
 
 #ifndef __ARCH_SET_SOFTIRQ_PENDING
Index: linux-stable/kernel/irq/manage.c
===================================================================
--- linux-stable.orig/kernel/irq/manage.c
+++ linux-stable/kernel/irq/manage.c
@@ -21,6 +21,7 @@
 #include "internals.h"
 
 #ifdef CONFIG_IRQ_FORCED_THREADING
+# ifndef CONFIG_PREEMPT_RT_BASE
 __read_mostly bool force_irqthreads;
 
 static int __init setup_forced_irqthreads(char *arg)
@@ -29,6 +30,7 @@ static int __init setup_forced_irqthread
 	return 0;
 }
 early_param("threadirqs", setup_forced_irqthreads);
+# endif
 #endif
 
 /**