linux-kernel - [PATCH] [10/20] i386: Move MWAIT idle check to generic CPU initialization

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Message-Id: <20080103005005.B13C714D40@wotan.suse.de>
Date:	Thu,  3 Jan 2008 01:50:05 +0100 (CET)
From:	Andi Kleen <ak@...e.de>
To:	linux-kernel@...r.kernel.org
Subject: [PATCH] [10/20] i386: Move MWAIT idle check to generic CPU initialization


Previously it was only run for Intel CPUs, but AMD Fam10h implements MWAIT too.

This matches 64bit behaviour.

Signed-off-by: Andi Kleen <ak@...e.de>

---
 arch/x86/kernel/cpu/common.c |    2 ++
 arch/x86/kernel/cpu/intel.c  |    1 -
 2 files changed, 2 insertions(+), 1 deletion(-)

Index: linux/arch/x86/kernel/cpu/common.c
===================================================================
--- linux.orig/arch/x86/kernel/cpu/common.c
+++ linux/arch/x86/kernel/cpu/common.c
@@ -510,6 +510,8 @@ void __cpuinit identify_cpu(struct cpuin
 
 	/* Init Machine Check Exception if available. */
 	mcheck_init(c);
+
+	select_idle_routine(c);
 }
 
 void __init identify_boot_cpu(void)
Index: linux/arch/x86/kernel/cpu/intel.c
===================================================================
--- linux.orig/arch/x86/kernel/cpu/intel.c
+++ linux/arch/x86/kernel/cpu/intel.c
@@ -134,7 +134,6 @@ static void __cpuinit init_intel(struct 
 	}
 #endif
 
-	select_idle_routine(c);
 	l2 = init_intel_cacheinfo(c);
 	if (c->cpuid_level > 9 ) {
 		unsigned eax = cpuid_eax(10);
--
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