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Re: [Xen-devel] Xenoprof: getting Oprofile out of timer mode?

To: "Ray Bryant" <raybry@xxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Xenoprof: getting Oprofile out of timer mode?
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Tue, 23 May 2006 23:32:34 +0100
Cc: Gitika Aggarwal <gitika@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, Andrei Lifchits <alifchit@xxxxxxxxx>, "Santos, Jose Renato G" <joserenato.santos@xxxxxx>
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On 23 May 2006, at 23:32, Ray Bryant wrote:

Yeah, it looks the problem is the following check in

        if (cpu_model > 4)
                return 0;

Intel processors 920 and 955 (perhaps others, you would have to ask Intel) appear to return 6 as the cpu model. Making the obvious change to the above
gets oprofile out of timer only mode.   An obvious patch is attached.

Presumably there is the same problem with oprofile on Linux running natively (no Xen)?

 -- Keir

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