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Date: Fri, 17 Aug 2007 13:42:00 -0700 (PDT)
From: Christoph Lameter <clameter@sgi.com>
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To: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
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Subject: Re: [PATCH 1/7] Simple Performance Counters: Core Piece
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On Fri, 17 Aug 2007, Mathieu Desnoyers wrote:

> Actually, get_cycles() at least on some AMD cpus, do not synchronize the
> core, which can skew the results. You might want to use
> get_cycles_sync() there.

get_cycle() results as used here are bound to a single processor. If we 
end up on a different processor at the end of the measurement then the 
result is discarded. So not need for get_cycles_sync.