linux-kernel - [PATCH] x86: add missing __percpu markups in arch/x86/lib/msr*

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Message-ID: <4C5D5225.2000104@kernel.org>
Date:	Sat, 07 Aug 2010 14:31:33 +0200
From:	Tejun Heo <tj@...nel.org>
To:	Thomas Gleixner <tglx@...utronix.de>
CC:	linux-kernel@...r.kernel.org, Namhyung Kim <namhyung@...il.com>,
	x86@...nel.org
Subject: [PATCH] x86: add missing __percpu markups in arch/x86/lib/msr*

From: Namhyung Kim <namhyung@...il.com>

msr_info->msrs is a percpu pointer but was missing __percpu markup.
Add it.

Signed-off-by: Namhyung Kim <namhyung@...il.com>
Acked-by: Tejun Heo <tj@...nel.org>
---
Thomas, can you please route this through x86 tree?

Thanks.

 arch/x86/include/asm/msr.h |   14 +++++++-------
 arch/x86/lib/msr-smp.c     |    8 +++++---
 arch/x86/lib/msr.c         |    6 +++---
 3 files changed, 15 insertions(+), 13 deletions(-)

Index: percpu/arch/x86/include/asm/msr.h
===================================================================
--- percpu.orig/arch/x86/include/asm/msr.h
+++ percpu/arch/x86/include/asm/msr.h
@@ -30,7 +30,7 @@ struct msr {
 struct msr_info {
 	u32 msr_no;
 	struct msr reg;
-	struct msr *msrs;
+	struct msr __percpu *msrs;
 	int err;
 };

@@ -256,14 +256,14 @@ do {

 #define write_rdtscp_aux(val) wrmsr(MSR_TSC_AUX, (val), 0)

-struct msr *msrs_alloc(void);
-void msrs_free(struct msr *msrs);
+struct msr __percpu *msrs_alloc(void);
+void msrs_free(struct msr __percpu *msrs);

 #ifdef CONFIG_SMP
 int rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h);
 int wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h);
-void rdmsr_on_cpus(const struct cpumask *mask, u32 msr_no, struct msr *msrs);
-void wrmsr_on_cpus(const struct cpumask *mask, u32 msr_no, struct msr *msrs);
+void rdmsr_on_cpus(const struct cpumask *mask, u32 msr_no, struct msr __percpu *msrs);
+void wrmsr_on_cpus(const struct cpumask *mask, u32 msr_no, struct msr __percpu *msrs);
 int rdmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h);
 int wrmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h);
 int rdmsr_safe_regs_on_cpu(unsigned int cpu, u32 regs[8]);
@@ -280,12 +280,12 @@ static inline int wrmsr_on_cpu(unsigned
 	return 0;
 }
 static inline void rdmsr_on_cpus(const struct cpumask *m, u32 msr_no,
-				struct msr *msrs)
+				struct msr __percpu *msrs)
 {
        rdmsr_on_cpu(0, msr_no, &(msrs[0].l), &(msrs[0].h));
 }
 static inline void wrmsr_on_cpus(const struct cpumask *m, u32 msr_no,
-				struct msr *msrs)
+				struct msr __percpu *msrs)
 {
        wrmsr_on_cpu(0, msr_no, msrs[0].l, msrs[0].h);
 }
Index: percpu/arch/x86/lib/msr-smp.c
===================================================================
--- percpu.orig/arch/x86/lib/msr-smp.c
+++ percpu/arch/x86/lib/msr-smp.c
@@ -64,7 +64,7 @@ int wrmsr_on_cpu(unsigned int cpu, u32 m
 EXPORT_SYMBOL(wrmsr_on_cpu);

 static void __rwmsr_on_cpus(const struct cpumask *mask, u32 msr_no,
-			    struct msr *msrs,
+			    struct msr __percpu *msrs,
 			    void (*msr_func) (void *info))
 {
 	struct msr_info rv;
@@ -91,7 +91,8 @@ static void __rwmsr_on_cpus(const struct
  * @msrs:       array of MSR values
  *
  */
-void rdmsr_on_cpus(const struct cpumask *mask, u32 msr_no, struct msr *msrs)
+void rdmsr_on_cpus(const struct cpumask *mask, u32 msr_no,
+		   struct msr __percpu *msrs)
 {
 	__rwmsr_on_cpus(mask, msr_no, msrs, __rdmsr_on_cpu);
 }
@@ -105,7 +106,8 @@ EXPORT_SYMBOL(rdmsr_on_cpus);
  * @msrs:       array of MSR values
  *
  */
-void wrmsr_on_cpus(const struct cpumask *mask, u32 msr_no, struct msr *msrs)
+void wrmsr_on_cpus(const struct cpumask *mask, u32 msr_no,
+		   struct msr __percpu *msrs)
 {
 	__rwmsr_on_cpus(mask, msr_no, msrs, __wrmsr_on_cpu);
 }
Index: percpu/arch/x86/lib/msr.c
===================================================================
--- percpu.orig/arch/x86/lib/msr.c
+++ percpu/arch/x86/lib/msr.c
@@ -2,9 +2,9 @@
 #include <linux/preempt.h>
 #include <asm/msr.h>

-struct msr *msrs_alloc(void)
+struct msr __percpu *msrs_alloc(void)
 {
-	struct msr *msrs = NULL;
+	struct msr __percpu *msrs = NULL;

 	msrs = alloc_percpu(struct msr);
 	if (!msrs) {
@@ -16,7 +16,7 @@ struct msr *msrs_alloc(void)
 }
 EXPORT_SYMBOL(msrs_alloc);

-void msrs_free(struct msr *msrs)
+void msrs_free(struct msr __percpu *msrs)
 {
 	free_percpu(msrs);
 }
--
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