[Xen-devel] [PATCH 2/8] x86/ticketlock: don''t inline _spin_unlock when using paravirt spinlocks

Jeremy Fitzhardinge
Fri, 02 Sep 2011 23:54:09 -0000

The code size expands somewhat, and its probably better to just call
a function rather than inline it.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
---
 arch/x86/Kconfig     |    3 +++
 kernel/Kconfig.locks |    2 +-
 2 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 6a47bb2..1f03f82 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -585,6 +585,9 @@ config PARAVIRT_SPINLOCKS

 	  If you are unsure how to answer this question, answer N.

+config ARCH_NOINLINE_SPIN_UNLOCK
+       def_bool PARAVIRT_SPINLOCKS
+
 config PARAVIRT_CLOCK
 	bool

diff --git a/kernel/Kconfig.locks b/kernel/Kconfig.locks
index 5068e2a..584637b 100644
--- a/kernel/Kconfig.locks
+++ b/kernel/Kconfig.locks
@@ -125,7 +125,7 @@ config INLINE_SPIN_LOCK_IRQSAVE
 		 ARCH_INLINE_SPIN_LOCK_IRQSAVE

 config INLINE_SPIN_UNLOCK
-	def_bool !DEBUG_SPINLOCK && (!PREEMPT || ARCH_INLINE_SPIN_UNLOCK)
+	def_bool !DEBUG_SPINLOCK && (!PREEMPT || ARCH_INLINE_SPIN_UNLOCK)
&& !ARCH_NOINLINE_SPIN_UNLOCK

 config INLINE_SPIN_UNLOCK_BH
 	def_bool !DEBUG_SPINLOCK && ARCH_INLINE_SPIN_UNLOCK_BH