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From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 17 Jul 2011 21:51:45 +0200
Subject: locking: Disable spin on owner for RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.17-rt9.tar.xz
Drop spin on owner for mutex / rwsem. We are most likely not using it
but…
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
kernel/Kconfig.locks | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/kernel/Kconfig.locks
+++ b/kernel/Kconfig.locks
@@ -226,11 +226,11 @@ config ARCH_SUPPORTS_ATOMIC_RMW
config MUTEX_SPIN_ON_OWNER
def_bool y
- depends on SMP && ARCH_SUPPORTS_ATOMIC_RMW
+ depends on SMP && ARCH_SUPPORTS_ATOMIC_RMW && !PREEMPT_RT_FULL
config RWSEM_SPIN_ON_OWNER
def_bool y
- depends on SMP && ARCH_SUPPORTS_ATOMIC_RMW
+ depends on SMP && ARCH_SUPPORTS_ATOMIC_RMW && !PREEMPT_RT_FULL
config LOCK_SPIN_ON_OWNER
def_bool y
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