linux-kernel - Re: [PATCH V2] Oprofile: Change CPUIDS from decimal to hex, and add some comments

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Message-ID: <20100510123352.GF6450@erda.amd.com>
Date:	Mon, 10 May 2010 14:33:52 +0200
From:	Robert Richter <robert.richter@....com>
To:	John Villalovos <sodarock@...il.com>
CC:	"andi@...stfloor.org" <andi@...stfloor.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"x86@...nel.org" <x86@...nel.org>,
	"oprofile-list@...ts.sf.net" <oprofile-list@...ts.sf.net>
Subject: Re: [PATCH V2] Oprofile: Change CPUIDS from decimal to hex, and
 add some comments

On 07.05.10 12:41:40, John Villalovos wrote:
> Version 2:
> 
> Incorporating suggested changes from Robert Richter.
> 
> Back when the patch was submitted for "Add Xeon 7500 series support to
> oprofile", Robert Richter had asked for a followon patch that converted all the
> CPU ID values to hex.
> 
> I have done that here for the "i386/core_i7" and "i386/atom" class
> processors in the ppro_init() function and also added some comments on
> where to find documentation on the Intel processors.
> 
> Signed-off-by: John L. Villalovos <john.l.villalovos@...el.com>
> 
> diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c
> index 9f001d9..2de5f44 100644
> --- a/arch/x86/oprofile/nmi_int.c
> +++ b/arch/x86/oprofile/nmi_int.c
> @@ -586,6 +586,13 @@ static int __init ppro_init(char **cpu_type)
>  	if (force_arch_perfmon && cpu_has_arch_perfmon)
>  		return 0;
>  
> +	/* Documentation on identifying Intel processors by CPU Family and Model
> +	 * can be found in the Intel Software Developer's Manual (SDM).
> +	 * http://www.intel.com/products/processor/manuals/
> +	 * As of May 2010 the documentation for this was in the:
> +	 * "Intel 64 and IA-32 Architectures Software Developer's Manual Volume
> +	 * 3B: System Programming Guide",
> +	 * "Table B-1 CPUID Signature Values of DisplayFamily_DisplayModel" */
>  	switch (cpu_model) {
>  	case 0 ... 2:
>  		*cpu_type = "i386/ppro";

Patch applied, thanks John. I made some small style changes to your
comment:

       /*
        * Documentation on identifying Intel processors by CPU family
        * and model can be found in the Intel Software Developer's
        * Manuals (SDM):
        *
        *  http://www.intel.com/products/processor/manuals/
        *
        * As of May 2010 the documentation for this was in the:
        * "Intel 64 and IA-32 Architectures Software Developer's
        * Manual Volume 3B: System Programming Guide", "Table B-1
        * CPUID Signature Values of DisplayFamily_DisplayModel".
        */

-Robert

-- 
Advanced Micro Devices, Inc.
Operating System Research Center
email: robert.richter@....com

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