patches/0063-preempt-Provide-preempt_-_-no-rt-variants.patch

From 877ef4ee191f7a7f1f39eba9f6e4675efbff2194 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 24 Jul 2009 12:38:56 +0200
Subject: [PATCH 063/262] preempt: Provide preempt_*_(no)rt variants

RT needs a few preempt_disable/enable points which are not necessary
otherwise. Implement variants to avoid #ifdeffery.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 include/linux/preempt.h |   20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/include/linux/preempt.h b/include/linux/preempt.h
index 5a710b9..5b46536 100644
--- a/include/linux/preempt.h
+++ b/include/linux/preempt.h
@@ -54,11 +54,15 @@ do { \
 	dec_preempt_count(); \
 } while (0)
 
-#define preempt_enable_no_resched()	sched_preempt_enable_no_resched()
+#ifndef CONFIG_PREEMPT_RT_BASE
+# define preempt_enable_no_resched()	sched_preempt_enable_no_resched()
+#else
+# define preempt_enable_no_resched()	preempt_enable()
+#endif
 
 #define preempt_enable() \
 do { \
-	preempt_enable_no_resched(); \
+	sched_preempt_enable_no_resched(); \
 	barrier(); \
 	preempt_check_resched(); \
 } while (0)
@@ -104,6 +108,18 @@ do { \
 
 #endif /* CONFIG_PREEMPT_COUNT */
 
+#ifdef CONFIG_PREEMPT_RT_FULL
+# define preempt_disable_rt()		preempt_disable()
+# define preempt_enable_rt()		preempt_enable()
+# define preempt_disable_nort()		do { } while (0)
+# define preempt_enable_nort()		do { } while (0)
+#else
+# define preempt_disable_rt()		do { } while (0)
+# define preempt_enable_rt()		do { } while (0)
+# define preempt_disable_nort()		preempt_disable()
+# define preempt_enable_nort()		preempt_enable()
+#endif
+
 #ifdef CONFIG_PREEMPT_NOTIFIERS
 
 struct preempt_notifier;
-- 
1.7.10.4