Re: [PATCH 3/6] perf: Add timestamp to COMM and MMAP events

[Peter Zijlstra]

On Mon, 2010-11-29 at 17:06 +1100, Ian Munsie wrote:
> 
> 
> This goes away if PERF_SAMPLE_CPU is added to the mix so that the
> timestamps are offset from the first event of *their* CPU, otherwise
> time-epoch can go negative, as it has done here. 

How does that happen, I though the power7 sched_clock() was fully
synchronized and monotonic across all cores?
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