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To: Christoph Hellwig <hch@infradead.org>
Cc: Masami Hiramatsu <mhiramat@redhat.com>, Ingo Molnar <mingo@elte.hu>,
       Steven Rostedt <rostedt@goodmis.org>,
       lkml <linux-kernel@vger.kernel.org>,
       systemtap <systemtap@sources.redhat.com>, kvm <kvm@vger.kernel.org>,
       Ananth N Mavinakayanahalli <ananth@in.ibm.com>,
       Frederic Weisbecker <fweisbec@gmail.com>,
       Tom Zanussi <tzanussi@gmail.com>
Subject: Re: [PATCH -tip v5 4/7] tracing: add kprobe-based event tracer
References: <20090509004829.5505.38720.stgit@localhost.localdomain>
	<20090509004859.5505.18729.stgit@localhost.localdomain>
	<20090511093224.GC23875@infradead.org>
From: fche@redhat.com (Frank Ch. Eigler)
Date: Mon, 11 May 2009 11:28:12 -0400
In-Reply-To: <20090511093224.GC23875@infradead.org> (Christoph Hellwig's message of "Mon, 11 May 2009 05:32:24 -0400")
Message-ID: <y0m8wl3ek1f.fsf@fche.csb>
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Christoph Hellwig <hch@infradead.org> writes:

> [...]  But as with so many tracing bits in the kernel it's just
> lowlevel bits without a good user interface.  We'd really need some
> high-level way for sysadmins/developers to use it.  E.g. a version
> of the systemtap compiler that doesn't build a kernel module but
> instead uses the event tracer + the kprobes tracer. [...]

This (the translator detecting that a particular script is simple
enough to be executed in this manner) is theoretically possible.

- FChE