Re: [PATCH 0/3] powerpc: Instrument Hypervisor Calls

On Sat, Jul 15, 2006 at 02:00:02AM +0200, Arnd Bergmann wrote:

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?

Oops, forgot that as an additional issue/question.  In this patch, I went
back to mftb() as 'wall time' made more sense for the group wanting this
functionality.  It is easy to switch, or collect both (I think).  Since I
started with mftb went to PURR and then back to mftb, it certainly does
look like an agument to try and collect both. :)

-- 
Mike