linux-kernel - Re: [PATCH -tip v8 0/7] tracing: kprobe-based event tracer and x86 instruction decoder

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Date:	Sat, 30 May 2009 04:05:03 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Masami Hiramatsu <mhiramat@...hat.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Steven Rostedt <rostedt@...dmis.org>,
	lkml <linux-kernel@...r.kernel.org>, Avi Kivity <avi@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andi Kleen <andi@...stfloor.org>,
	Jim Keniston <jkenisto@...ibm.com>,
	"K.Prasad" <prasad@...ux.vnet.ibm.com>,
	Przemys??awPawe??czyk <przemyslaw@...elczyk.it>,
	Vegard Nossum <vegard.nossum@...il.com>,
	Christoph Hellwig <hch@...radead.org>,
	"Frank Ch. Eigler" <fche@...hat.com>,
	Tom Zanussi <tzanussi@...il.com>,
	systemtap <systemtap@...rces.redhat.com>,
	kvm <kvm@...r.kernel.org>,
	DLE <dle-develop@...ts.sourceforge.net>
Subject: Re: [PATCH -tip v8 0/7] tracing: kprobe-based event tracer and x86
	instruction decoder

Small question to start with: What's your (or Hitachi s/Red Hat's) use case
for this?  It's obviously really cool technology, but I fear without
some good user space side to make it easy to use it will most likely
bit-rot which would be sad.

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