[PATCH RFC V10 2/18] x86/ticketlock: Don't inline _spin_unlock when using paravirt spinlocks

From: Raghavendra K T
Date: Mon Jun 24 2013 - 08:37:07 EST


x86/ticketlock: Don't inline _spin_unlock when using paravirt spinlocks

From: Raghavendra K T <raghavendra.kt@xxxxxxxxxxxxxxxxxx>

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

Thanks Jeremy for original version of ARCH_NOINLINE_SPIN_UNLOCK config patch,
which is simplified.

Suggested-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Signed-off-by: Raghavendra K T <raghavendra.kt@xxxxxxxxxxxxxxxxxx>
---
arch/x86/Kconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 685692c..80fcc4b 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -621,6 +621,7 @@ config PARAVIRT_DEBUG
config PARAVIRT_SPINLOCKS
bool "Paravirtualization layer for spinlocks"
depends on PARAVIRT && SMP
+ select UNINLINE_SPIN_UNLOCK
---help---
Paravirtualized spinlocks allow a pvops backend to replace the
spinlock implementation with something virtualization-friendly

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