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SubjectRe: [RFC] perf_events: support for uncore a.k.a. nest units


On 1/30/2010 12:42 AM, Peter Zijlstra wrote:
> On Fri, 2010-01-29 at 15:05 -0800, Corey Ashford wrote:
>> So you'd read the id from the sysfs topology tree, and then pass that id to the
>> interface? That's an interesting approach that eliminates the need to pass a
>> string pmu path to the kernel.
>
> No, the attr.pmu_id would reflect the location in the tree (pci
> location, or spu number), the pmu id reported would identify the kind of
> pmu driver used for that particular device.
>
> I realized this confusion after sending but didn't clarify, we should
> come up with a good alternative name for either (or both) uses.
>

Ok, just so I'm clear here, is attr.pmu_id a (char *) or some sort of encoded
bit field?

- Corey



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