Subject: cpu-rt-variants.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 17 Jun 2011 15:42:38 +0200

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 include/linux/smp.h |    8 ++++++++
 1 file changed, 8 insertions(+)

--- a/include/linux/smp.h
+++ b/include/linux/smp.h
@@ -223,6 +223,14 @@ static inline void kick_all_cpus_sync(vo
 #define get_cpu()		({ preempt_disable(); smp_processor_id(); })
 #define put_cpu()		preempt_enable()
 
+#ifndef CONFIG_PREEMPT_RT_FULL
+# define get_cpu_light()	get_cpu()
+# define put_cpu_light()	put_cpu()
+#else
+# define get_cpu_light()	({ migrate_disable(); smp_processor_id(); })
+# define put_cpu_light()	migrate_enable()
+#endif
+
 /*
  * Callback to arch code if there's nosmp or maxcpus=0 on the
  * boot command line: