RFC: Performance Monitor Counters device

[Anton Blanchard]

> I'm currently implementing a Linux driver to use the PowerPC
> performance monitor counters (PMC's).  I thought I'd ask here
> about some design/implementation issues, before I do a lot
> of stupid/timewasting things ;)

It would be great if we could plug into something like oprofile.
Linus was even interested in merging some sort of simple profiling
infrastructure.

We have a similar issue on ppc64, if we could share at least part
of it between ppc32 and ppc64 that would be nice.

Anton

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