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Subject: Re: [PATCH 0/2] perf_counter: add tracepoint support
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jason Baron <jbaron@redhat.com>, mingo@elte.hu,
       linux-kernel@vger.kernel.org, paulus@samba.org, rostedt@goodmis.org
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Date: Thu, 09 Jul 2009 09:58:03 +0200
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On Thu, 2009-07-09 at 05:10 +0200, Frederic Weisbecker wrote:
> (RFD parenthesis: why not using the one in kernel/trace for all perf events?
> Now that it is lockless, it would fit nicely inside: no fear about NMI
> context).

because that one doesn't have a single-buffer mode you can mmap().