From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 26 Jul 2009 02:21:32 +0200
Subject: x86: Use generic rwsem_spinlocks on -rt

Simplifies the separation of anon_rw_semaphores and rw_semaphores for
-rt.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

---
 arch/x86/Kconfig |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Index: linux-stable/arch/x86/Kconfig
===================================================================
--- linux-stable.orig/arch/x86/Kconfig
+++ linux-stable/arch/x86/Kconfig
@@ -153,10 +153,10 @@ config ARCH_MAY_HAVE_PC_FDC
 	def_bool ISA_DMA_API
 
 config RWSEM_GENERIC_SPINLOCK
-	def_bool !X86_XADD
+	def_bool !X86_XADD || PREEMPT_RT_FULL
 
 config RWSEM_XCHGADD_ALGORITHM
-	def_bool X86_XADD
+	def_bool X86_XADD && !RWSEM_GENERIC_SPINLOCK && !PREEMPT_RT_FULL
 
 config GENERIC_CALIBRATE_DELAY
 	def_bool y