linux-kernel - [PATCH] [2/3] Use the fancy DECLARE_EAX

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Message-Id: <20081007114313.CB5F23E6A0D@basil.firstfloor.org>
Date:	Tue,  7 Oct 2008 13:43:13 +0200 (CEST)
From:	Andi Kleen <andi@...stfloor.org>
To:	x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] [2/3] Use the fancy DECLARE_EAX_EDX macros for rdtscp too


rdtscp was the only function to not use them.

Signed-off-by: Andi Kleen <ak@...ux.intel.com>

Index: linux-2.6.27-rc4-misc/include/asm-x86/msr.h
===================================================================
--- linux-2.6.27-rc4-misc.orig/include/asm-x86/msr.h
+++ linux-2.6.27-rc4-misc/include/asm-x86/msr.h
@@ -34,10 +34,10 @@
 
 static inline unsigned long long native_read_tscp(unsigned int *aux)
 {
-	unsigned long low, high;
-	asm volatile(".byte 0x0f,0x01,0xf9"
-		     : "=a" (low), "=d" (high), "=c" (*aux));
-	return low | ((u64)high << 32);
+	DECLARE_ARGS(val, low, high);
+	asm volatile(".byte 0x0f,0x01,0xf9" :
+			EAX_EDX_RET(val, low, high), "=c" (*aux));
+	return EAX_EDX_VAL(val, low, high);
 }
 
 static inline unsigned long long native_read_msr(unsigned int msr)
--
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