in some cases, spinlocks are used to avoid preemption. does not work
correctly, when CONFIG_PREEMPT_RT is enabled.
therefore two new macros are introduced:
preempt_disable_rt/preempt_disable_rt behave like their equivalents, if
CONFIG_PREEMPT_RT is enabled, and as noops otherwise.
Signed-off-by: Tim Blechmann <tim@xxxxxxxxxx>
---
include/linux/preempt.h | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/include/linux/preempt.h b/include/linux/preempt.h
index 72b1a10..2526170 100644
--- a/include/linux/preempt.h
+++ b/include/linux/preempt.h
@@ -93,6 +93,16 @@ do { \
#endif
+#ifdef CONFIG_PREEMPT_RT
+#define preempt_disable_rt preempt_disable
+#define preempt_enable_rt preempt_enable
+#else
+#define
+#define preempt_disable_rt do { } while (0)
+#define preempt_enable_rt do { } while (0)
+#endif
+
+
#ifdef CONFIG_PREEMPT_NOTIFIERS
struct preempt_notifier;
--
1.5.6.3
--
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