37 lines
1.3 KiB
Diff
37 lines
1.3 KiB
Diff
From 5c6b0c3cb093782507f05fbbe7e070641a69ab45 Mon Sep 17 00:00:00 2001
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Message-Id: <5c6b0c3cb093782507f05fbbe7e070641a69ab45.1601675152.git.zanussi@kernel.org>
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In-Reply-To: <5b5a156f9808b1acf1205606e03da117214549ea.1601675151.git.zanussi@kernel.org>
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References: <5b5a156f9808b1acf1205606e03da117214549ea.1601675151.git.zanussi@kernel.org>
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From: Thomas Gleixner <tglx@linutronix.de>
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Date: Sun, 17 Jul 2011 22:51:33 +0200
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Subject: [PATCH 111/333] sched: Use the proper LOCK_OFFSET for cond_resched()
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.148-rt64.tar.xz
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RT does not increment preempt count when a 'sleeping' spinlock is
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locked. Update PREEMPT_LOCK_OFFSET for that case.
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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---
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include/linux/preempt.h | 4 ++++
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1 file changed, 4 insertions(+)
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diff --git a/include/linux/preempt.h b/include/linux/preempt.h
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index f7a17fcc3fec..b7fe717eb1f4 100644
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--- a/include/linux/preempt.h
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+++ b/include/linux/preempt.h
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@@ -118,7 +118,11 @@
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/*
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* The preempt_count offset after spin_lock()
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*/
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+#if !defined(CONFIG_PREEMPT_RT_FULL)
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#define PREEMPT_LOCK_OFFSET PREEMPT_DISABLE_OFFSET
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+#else
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+#define PREEMPT_LOCK_OFFSET 0
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+#endif
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/*
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* The preempt_count offset needed for things like:
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--
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2.17.1
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