Re: [PATCH 0/2] perf_events: add support for Intel fixed counter 2

[Peter Zijlstra]

On Fri, 2011-02-04 at 14:00 +0200, Stephane Eranian wrote:

> This series of patches solves this problem by introducing a custom
> encoding for UNHALTED_REFERENCE_CYCLES (0xff3c) and improving
> the constraint infrastructure to handle events which can ONLY be
> measured on fixed counters.

Right, so the only problem I can see with this is that Intel will at
some point in the future put an actual event there.

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