linux-kernel - Re: [PATCH -tip v5 4/7] tracing: add kprobe-based event tracer

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Date:	Mon, 11 May 2009 11:28:12 -0400
From:	fche@...hat.com (Frank Ch. Eigler)
To:	Christoph Hellwig <hch@...radead.org>
Cc:	Masami Hiramatsu <mhiramat@...hat.com>,
	Ingo Molnar <mingo@...e.hu>,
	Steven Rostedt <rostedt@...dmis.org>,
	lkml <linux-kernel@...r.kernel.org>,
	systemtap <systemtap@...rces.redhat.com>,
	kvm <kvm@...r.kernel.org>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Tom Zanussi <tzanussi@...il.com>
Subject: Re: [PATCH -tip v5 4/7] tracing: add kprobe-based event tracer

Christoph Hellwig <hch@...radead.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
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