Re: [PATCH 01/10] perf,x86: Fix event/group validation

[Peter Zijlstra]

On Thu, May 21, 2015 at 06:18:15AM -0700, Stephane Eranian wrote:
> Yes, it does modify the cpuc->event_list[]->hwc, because it is used as a
> cache for *EACH* invocation of the function. It is irrelevant outside the
> function.

Yes, but the problem is that they _nest_.

So you get to use the one from the nested call in the outer call.
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