blob: eccb1e428498aea58864e820922f87b9a7decc7b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
From 5c317385aa997812acc4dd102c34f7d843bd7eb6 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 17 Jul 2011 22:51:33 +0200
Subject: [PATCH 111/347] sched: Use the proper LOCK_OFFSET for cond_resched()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz
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:
--
2.36.1
|
