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From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 17 Jul 2011 22:51:33 +0200
Subject: [PATCH 111/351] sched: Use the proper LOCK_OFFSET for cond_resched()
Origin: https://git.kernel.org/cgit/linux/kernel/git/rt/linux-stable-rt.git/commit?id=4951308b85f29382d1cf1f29287bf908dd20c9f9
RT does not increment preempt count when a 'sleeping' spinlock is
locked. Update PREEMPT_LOCK_OFFSET for that case.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
include/linux/preempt.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/include/linux/preempt.h b/include/linux/preempt.h
index f7a17fcc3fec..b7fe717eb1f4 100644
--- a/include/linux/preempt.h
+++ b/include/linux/preempt.h
@@ -118,7 +118,11 @@
/*
* The preempt_count offset after spin_lock()
*/
+#if !defined(CONFIG_PREEMPT_RT_FULL)
#define PREEMPT_LOCK_OFFSET PREEMPT_DISABLE_OFFSET
+#else
+#define PREEMPT_LOCK_OFFSET 0
+#endif
/*
* The preempt_count offset needed for things like:
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