linux-kernel - Re: [PATCH] Linux Kernel Markers

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Date:	Tue, 19 Sep 2006 10:13:07 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
Cc:	"Frank Ch. Eigler" <fche@...hat.com>,
	Paul Mundt <lethal@...ux-sh.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Jes Sorensen <jes@....com>, Andrew Morton <akpm@...l.org>,
	Tom Zanussi <zanussi@...ibm.com>,
	Richard J Moore <richardj_moore@...ibm.com>,
	Michel Dagenais <michel.dagenais@...ymtl.ca>,
	Christoph Hellwig <hch@...radead.org>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Thomas Gleixner <tglx@...utronix.de>,
	William Cohen <wcohen@...hat.com>,
	"Martin J. Bligh" <mbligh@...igh.org>, ltt-dev@...fik.org,
	systemtap@...rces.redhat.com, Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: [PATCH] Linux Kernel Markers


* Ingo Molnar <mingo@...e.hu> wrote:

> > +choice
> > +	prompt "MARK code marker behavior"
> 
> > +config MARK_KPROBE
> > +config MARK_JPROBE
> > +config MARK_FPROBE
> > +	Change markers for a function call.
> > +config MARK_PRINT
> 
> as indicated before in great detail, NACK on this profileration of 
> marker options, especially the function call one. I'd like to see _one_ 
> marker mechanism that distros could enable, preferably with zero (or at 
> most one NOP) in-code overhead. (You can of course patch whatever 
> extension ontop of it, in out-of-tree code, to gain further performance 
> advantage by generating direct system-calls.)
                                    ^---function

	Ingo
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