Home » Mailing list archives » linux-kernel » 2007 » October » 9

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

Previous thread: CIFSd oops (Linux 2.6.22) by Andri Möll on Tuesday, October 9, 2007 - 5:59 am. (1 message)

Next thread: [PATCH] ramdisk: fix zeroed ramdisk pages on memory pressure by Christian Borntraeger on Tuesday, October 9, 2007 - 7:21 am. (1 message)
[view original message]
From: Akinobu Mita <akinobu.mita@...>
To: <linux-kernel@...>
Cc: Mike Travis <travis@...>, Andrew Morton <akpm@...>
Subject: [PATCH -mm] fix wrong /proc/cpuinfo output
Date: Tuesday, October 9, 2007 - 6:43 am

This patch fixes the problem introduced by:

http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.23-rc8/2....


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);

-
[view original message]
From: Ahmed S. Darwish <darwish.07@...>
To: Akinobu Mita <akinobu.mita@...>, <linux-kernel@...>, Mike Travis <travis@...>, Andrew Morton <akpm@...>
Subject: Re: [PATCH -mm] fix wrong /proc/cpuinfo output
Date: Tuesday, October 9, 2007 - 9:32 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

-
Previous thread: CIFSd oops (Linux 2.6.22) by Andri Möll on Tuesday, October 9, 2007 - 5:59 am. (1 message)

Next thread: [PATCH] ramdisk: fix zeroed ramdisk pages on memory pressure by Christian Borntraeger on Tuesday, October 9, 2007 - 7:21 am. (1 message)