30 lines
963 B
Diff
30 lines
963 B
Diff
From: Thomas Gleixner <tglx@linutronix.de>
|
|
Date: Sun, 17 Jul 2011 22:51:33 +0200
|
|
Subject: [PATCH 112/290] 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=04e2f43d1deac4ff13f0e108fc89306198a2f762
|
|
|
|
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:
|