Re: [discuss] BTS overflow handling, was: [PATCH] perf_counter:Fix a race on perf_counter_ctx

From: Ingo Molnar
Date: Tue Sep 01 2009 - 09:10:04 EST

* Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> wrote:

> > In any case, this is getting late for the upcoming merge window.
> > Would you rather drop the BTS patch or disable kernel tracing?
> I don't think we need to drop it, at worst we could defer the
> patch to .33, but I think we can indeed get away with disabling
> the kernel tracing for now.

That could be done via a simple patch that does not enable BTS
tracing if the .kernel attribute bit is set. I.e. we enable BTS on a
narrower set of config settings than in the past - but still keep
the code largely untouched.

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