Re: [PATCH v0 00/71] perf: Add support for Intel Processor Trace

[Andi Kleen]

> So we could make the old ABI a CONFIG_PERF_EVENTS_COMPAT_X86_BTS kind 
> of legacy option, turned off by default. That allows us its eventual 
> future phasing out.
> 
> It all depends on how useful the new tooling becomes: if interesting 
> things can be done with it via an obvious, powerful interface then 
> people might start using it.

The thing to keep in mind is that BTS is really really slow.

It's unlikely it'll be ever all that useful no matter how the API
looks like.

-Andi
-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only
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