Jetpack/kernel/kernel-4.9/rt-patches/0151-locking-Disable-spin-o...

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From 11655d8ad53365933c3645131b4f310bfa057e15 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 17 Jul 2011 21:51:45 +0200
Subject: [PATCH 151/352] locking: Disable spin on owner for RT
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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(-)
diff --git a/kernel/Kconfig.locks b/kernel/Kconfig.locks
index ebdb004..b9e6aa7 100644
--- a/kernel/Kconfig.locks
+++ b/kernel/Kconfig.locks
@@ -225,11 +225,11 @@ config ARCH_SUPPORTS_ATOMIC_RMW
config MUTEX_SPIN_ON_OWNER
def_bool y
- depends on SMP && !DEBUG_MUTEXES && ARCH_SUPPORTS_ATOMIC_RMW
+ depends on SMP && !DEBUG_MUTEXES && ARCH_SUPPORTS_ATOMIC_RMW && !PREEMPT_RT_FULL
config RWSEM_SPIN_ON_OWNER
def_bool y
- depends on SMP && RWSEM_XCHGADD_ALGORITHM && ARCH_SUPPORTS_ATOMIC_RMW
+ depends on SMP && RWSEM_XCHGADD_ALGORITHM && ARCH_SUPPORTS_ATOMIC_RMW && !PREEMPT_RT_FULL
config LOCK_SPIN_ON_OWNER
def_bool y
--
2.7.4