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Date: Mon, 28 Apr 2008 11:47:58 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Christoph Hellwig <hch@infradead.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
       Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>,
       Ingo Molnar <mingo@elte.hu>, linux-kernel@vger.kernel.org
Subject: Re: [patch 00/37] Linux Kernel Markers instrumentation for
 sched-devel.git
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On Mon, 28 Apr 2008 14:40:51 -0400 Christoph Hellwig <hch@infradead.org> wrote:

> On Mon, Apr 28, 2008 at 11:36:10AM -0700, Andrew Morton wrote:
> > It hides the cosmetically-ugly bits, but not the deeply ugly: each of these
> > trace points is an extension to the kernel->userspace API, with all that
> > this implies.
> 
> Not at all.  It's only accessibe to kernel code, so it per defintion
> can't be a userspace API.

eh?  It adds human-readable printk strings.