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

[Stephane Eranian]

On Thu, May 21, 2015 at 6:20 AM, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
> 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.

You mean x86_schedule_events() calls x86_schedule_events()?
Or are you talking about a preemption while executing x86_schedule_events()?
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