forked from rrcarlosr/Jetpack
53 lines
1.6 KiB
Diff
53 lines
1.6 KiB
Diff
From b3a96707d1c6b27312b4a114e505b1a3d5b58424 Mon Sep 17 00:00:00 2001
|
|
From: Thomas Gleixner <tglx@linutronix.de>
|
|
Date: Fri, 24 Jul 2009 12:38:56 +0200
|
|
Subject: [PATCH 076/352] 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 | 18 +++++++++++++++++-
|
|
1 file changed, 17 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/include/linux/preempt.h b/include/linux/preempt.h
|
|
index 7eeceac..26e0eaa 100644
|
|
--- a/include/linux/preempt.h
|
|
+++ b/include/linux/preempt.h
|
|
@@ -159,7 +159,11 @@ do { \
|
|
preempt_count_dec(); \
|
|
} while (0)
|
|
|
|
-#define preempt_enable_no_resched() sched_preempt_enable_no_resched()
|
|
+#ifdef CONFIG_PREEMPT_RT_BASE
|
|
+# define preempt_enable_no_resched() sched_preempt_enable_no_resched()
|
|
+#else
|
|
+# define preempt_enable_no_resched() preempt_enable()
|
|
+#endif
|
|
|
|
#define preemptible() (preempt_count() == 0 && !irqs_disabled())
|
|
|
|
@@ -253,6 +257,18 @@ do { \
|
|
set_preempt_need_resched(); \
|
|
} while (0)
|
|
|
|
+#ifdef CONFIG_PREEMPT_RT_FULL
|
|
+# define preempt_disable_rt() preempt_disable()
|
|
+# define preempt_enable_rt() preempt_enable()
|
|
+# define preempt_disable_nort() barrier()
|
|
+# define preempt_enable_nort() barrier()
|
|
+#else
|
|
+# define preempt_disable_rt() barrier()
|
|
+# define preempt_enable_rt() barrier()
|
|
+# define preempt_disable_nort() preempt_disable()
|
|
+# define preempt_enable_nort() preempt_enable()
|
|
+#endif
|
|
+
|
|
#ifdef CONFIG_PREEMPT_NOTIFIERS
|
|
|
|
struct preempt_notifier;
|
|
--
|
|
2.7.4
|
|
|