5.10.78-rt56-rc3 stable review patch.
If anyone has any objections, please let me know.
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From: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
preempt_enable_no_resched() should point to preempt_enable() on
PREEMPT_RT so nobody is playing any preempt tricks and enables
preemption without checking for the need-resched flag.
This was misplaced in v3.14.0-rt1 und remained unnoticed until now.
Point preempt_enable_no_resched() and preempt_enable() on RT.
Cc: stable-rt@xxxxxxxxxxxxxxx
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Signed-off-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>
---
include/linux/preempt.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/include/linux/preempt.h b/include/linux/preempt.h
index af39859f02ee..7b5b2ed55531 100644
--- a/include/linux/preempt.h
+++ b/include/linux/preempt.h
@@ -208,12 +208,12 @@ do { \
preempt_count_dec(); \
} while (0)
-#ifdef CONFIG_PREEMPT_RT
+#ifndef CONFIG_PREEMPT_RT
# define preempt_enable_no_resched() sched_preempt_enable_no_resched()
-# define preempt_check_resched_rt() preempt_check_resched()
+# define preempt_check_resched_rt() barrier();
#else
# define preempt_enable_no_resched() preempt_enable()
-# define preempt_check_resched_rt() barrier();
+# define preempt_check_resched_rt() preempt_check_resched()
#endif
#define preemptible() (preempt_count() == 0 && !irqs_disabled())
--
2.33.0
