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[PATCH -mm] fix wrong /proc/cpuinfo output

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From: Akinobu Mita
Subject: [PATCH -mm] fix wrong /proc/cpuinfo output
Date: Tuesday, October 9, 2007 - 3:43 am

This patch fixes the problem introduced by:
http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.23-rc8/2.6.23-rc8-mm2/b...

The problem is that every processor line in /proc/cpuinfo displays zero
on x86_64.

$ grep processor /proc/cpuinfo
processor       : 0
processor       : 0

Because early_identify_cpu() overwrites c->cpu_index for every cpuinfo.
This patch removes that unnecessary initialization for c->cpu_index.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>

Index: 2.6-mm/arch/x86_64/kernel/setup.c
===================================================================
--- 2.6-mm.orig/arch/x86_64/kernel/setup.c
+++ 2.6-mm/arch/x86_64/kernel/setup.c
@@ -967,7 +967,6 @@ void __cpuinit early_identify_cpu(struct
 
 #ifdef CONFIG_SMP
 	c->phys_proc_id = (cpuid_ebx(1) >> 24) & 0xff;
-	c->cpu_index = 0;
 #endif
 	/* AMD-defined flags: level 0x80000001 */
 	xlvl = cpuid_eax(0x80000000);
-


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From: Ahmed S. Darwish
Subject: Re: [PATCH -mm] fix wrong /proc/cpuinfo output
Date: Tuesday, October 9, 2007 - 6:32 am

Link is dead, same patch in lkml.org:

http://lkml.org/lkml/2007/9/24/394

-- 
Ahmed S. Darwish
HomePage: http://darwish.07.googlepages.com
Blog: http://darwish-07.blogspot.com
-


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Previous thread: CIFSd oops (Linux 2.6.22) by Andri Möll on Tuesday, October 9, 2007 - 2:59 am. (1 message)

Next thread: [PATCH] ramdisk: fix zeroed ramdisk pages on memory pressure by Christian Borntraeger on Tuesday, October 9, 2007 - 4:21 am. (1 message)