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Date: Sun, 16 Jul 2006 01:30:54 +1000
From: Anton Blanchard <anton@samba.org>
To: Arnd Bergmann <arnd@arndb.de>
Subject: Re: [PATCH 0/3] powerpc: Instrument Hypervisor Calls
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Cc: Bryan Rosenburg <rosnbrg@us.ibm.com>, linuxppc-dev@ozlabs.org,
	Nathan Lynch <ntl@pobox.com>, Paul Mackerras <paulus@samba.org>,
	Christopher Yeoh <cyeoh@samba.org>
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> What happened to the question whether to use PURR values for also measuring
> cycles spent executing the hcall as opposed to cycles that passed before
> the hcall returns. Did that turn out not giving extra information after all
> or was there a different reason to drop that idea?

You have to be careful with PURR since it may be context switched
between partitions.

Anton