linux-kernel - [PATCH V13 02/14] x86/ticketlock: Don't inline _spin

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Message-Id: <1376058122-8248-3-git-send-email-raghavendra.kt@linux.vnet.ibm.com>
Date:	Fri,  9 Aug 2013 19:51:50 +0530
From:	Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>
To:	<mingo@...hat.com>, <hpa@...or.com>, <x86@...nel.org>,
	<jeremy@...p.org>, <konrad.wilk@...cle.com>, <gleb@...hat.com>,
	<pbonzini@...hat.com>
Cc:	<gregkh@...e.de>, <peterz@...radead.org>, <tglx@...utronix.de>,
	<agraf@...e.de>, <riel@...hat.com>, <avi.kivity@...il.com>,
	<habanero@...ux.vnet.ibm.com>, <chegu_vinod@...com>,
	<ouyang@...pitt.edu>, <drjones@...hat.com>,
	<attilio.rao@...rix.com>, linux-doc@...r.kernel.org,
	<torvalds@...ux-foundation.org>, <linux-kernel@...r.kernel.org>,
	<kvm@...r.kernel.org>, <andi@...stfloor.org>,
	<xen-devel@...ts.xensource.com>,
	<virtualization@...ts.linux-foundation.org>,
	<stefano.stabellini@...citrix.com>, <mtosatti@...hat.com>,
	<srivatsa.vaddagiri@...il.com>,
	Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>
Subject: [PATCH V13 02/14] x86/ticketlock: Don't inline _spin_unlock when using paravirt spinlocks

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@...ux-foundation.org>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Signed-off-by: Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>
Acked-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 7f3867c..724ce55 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -663,6 +663,7 @@ 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
-- 
1.7.11.7

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