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Date: Tue, 4 Jul 2017 11:46:02 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Mark Rutland <mark.rutland@arm.com>
Cc: Kyle Huey <me@kylehuey.com>, Vince Weaver <vincent.weaver@maine.edu>,
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Subject: Re: [PATCH] perf/core: generate overflow signal when samples are
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 entered the kernel in the "skid" region)
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On Tue, Jul 04, 2017 at 10:33:45AM +0100, Mark Rutland wrote:

> > That said, with a per-cpu event the TID sample value is indeed subject
> > to skid like you describe.
> 
> For per-cpu events, does that matter? Those don't have TID filters in
> the first place, no?

eBPF can do all sorts I suppose.

But yes, at some point you just have to give up, there's only so much
one can do.