linux-kernel - [PATCH 15/15] replace x86_read/write_per

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Message-Id: <11981813802836-git-send-email-gcosta@redhat.com>
Date:	Thu, 20 Dec 2007 18:04:10 -0200
From:	Glauber de Oliveira Costa <gcosta@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	akpm@...ux-foundation.org, glommer@...il.com, tglx@...utronix.de,
	mingo@...e.hu, ehabkost@...hat.com, jeremy@...p.org,
	avi@...ranet.com, anthony@...emonkey.ws,
	virtualization@...ts.linux-foundation.org, rusty@...tcorp.com.au,
	ak@...e.de, chrisw@...s-sol.org, rostedt@...dmis.org,
	hpa@...or.com, zach@...are.com, roland@...hat.com,
	Glauber de Oliveira Costa <gcosta@...hat.com>
Subject: [PATCH 15/15] replace x86_read/write_per_cpu with a common function.

x86_read_per_cpu() and its writeish sister are not present in x86_64. So in
this patch, we replace them with __get_cpu_var(), which is present in both

Signed-off-by: Glauber de Oliveira Costa <gcosta@...hat.com>
---
 arch/x86/kernel/paravirt.c |   10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)

Index: linux-2.6-x86/arch/x86/kernel/paravirt.c
===================================================================
--- linux-2.6-x86.orig/arch/x86/kernel/paravirt.c	2007-12-20 19:08:11.000000000 -0800
+++ linux-2.6-x86/arch/x86/kernel/paravirt.c	2007-12-20 19:08:18.000000000 -0800
@@ -238,18 +238,18 @@
 
 static inline void enter_lazy(enum paravirt_lazy_mode mode)
 {
-	BUG_ON(x86_read_percpu(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE);
+	BUG_ON(__get_cpu_var(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE);
 	BUG_ON(preemptible());
 
-	x86_write_percpu(paravirt_lazy_mode, mode);
+	__get_cpu_var(paravirt_lazy_mode) = mode;
 }
 
 void paravirt_leave_lazy(enum paravirt_lazy_mode mode)
 {
-	BUG_ON(x86_read_percpu(paravirt_lazy_mode) != mode);
+	BUG_ON(__get_cpu_var(paravirt_lazy_mode) != mode);
 	BUG_ON(preemptible());
 
-	x86_write_percpu(paravirt_lazy_mode, PARAVIRT_LAZY_NONE);
+	__get_cpu_var(paravirt_lazy_mode) = PARAVIRT_LAZY_NONE;
 }
 
 void paravirt_enter_lazy_mmu(void)
@@ -274,7 +274,7 @@
 
 enum paravirt_lazy_mode paravirt_get_lazy_mode(void)
 {
-	return x86_read_percpu(paravirt_lazy_mode);
+	return __get_cpu_var(paravirt_lazy_mode);
 }
 
 struct pv_info pv_info = {
--
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