linux-kernel - Re: [PATCH] oprofile: Add Support for Intel CPU Family 6 / Model 29

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Date:	Tue, 21 Sep 2010 16:38:04 +0200
From:	"Andi Kleen" <andi@...stfloor.org>
To:	"Robert Richter" <robert.richter@....com>
Cc:	"Arnd Bergmann" <arnd@...db.de>, "Jiri Olsa" <jolsa@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"oprofile-list@...ts.sourceforge.net" 
	<oprofile-list@...ts.sourceforge.net>,
	"tdm.rhbz@...il.com" <tdm.rhbz@...il.com>,
	"Andi Kleen" <andi@...stfloor.org>
Subject: Re: [PATCH] oprofile: Add Support for Intel CPU Family 6 / Model 29

> On 21.09.10 07:21:05, Arnd Bergmann wrote:
>> Just curious about the other missing IDs: this now supports all Core
>> microarchitecture CPUs, but only some Nehalem/Westmere ones.
>>
>> There is support for 0x1a (Bloomfield/Gainestown) and 0x2e (Beckton),
>> but
>> not for the much more common 0x1e (Lynnfield/Clarksfield/Jasper Forest),
>> 0x25 (Clarkdale/Arrandale) and 0x26 (Gulftown/Westmere-EP).
>>
>> Shouldn't those be added as well?

Westmere I still hold off because the oprofile user land
doesn't have the correct event list yet.

BTW I was thinking in this case to only add the model
numbers to the user code and just let it handle arch_perfmon
from the kernel.

This should work currently fine and avoid the problem
that you need to update user land and kernel in parallel
for a new cpu type.

>>
>> When you're there, it probably also wouldn't hurt to fill in the blanks
>> of some of the older CPUs like Tolopai (0x15) and newer Atoms (0x1c).
>
> Yes, would be nice to have also an update for the remaining
> unsupported models. Andi?

Yes would make sense. I'll ask around if there is a consolidated
list somewhere that could be used as a base.

-Andi

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