linux-kernel - Re: [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108

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Message-Id: <1158350716.5724.488.camel@localhost.localdomain>
Date:	Fri, 15 Sep 2006 22:05:16 +0200
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Roman Zippel <zippel@...ux-m68k.org>
Cc:	Ingo Molnar <mingo@...e.hu>, Alan Cox <alan@...rguk.ukuu.org.uk>,
	"Frank Ch. Eigler" <fche@...hat.com>, karim@...rsys.com,
	Tim Bird <tim.bird@...sony.com>,
	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	linux-kernel@...r.kernel.org,
	Christoph Hellwig <hch@...radead.org>,
	Andrew Morton <akpm@...l.org>, Ingo Molnar <mingo@...hat.com>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Tom Zanussi <zanussi@...ibm.com>, ltt-dev@...fik.org,
	Michel Dagenais <michel.dagenais@...ymtl.ca>
Subject: Re: [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108

On Fri, 2006-09-15 at 21:10 +0200, Roman Zippel wrote:
> > 
> > this is being worked on actively: there's the "djprobes" patchset, which 
> > includes a simplified disassembler to analyze common target code and can 
> > thus insert much faster, call-a-trampoline-function based tracepoints 
> > that are just as fast as (or faster than) compile-time, static 
> > tracepoints.
> 
> Who is going to implement this for every arch?
> Is this now the official party line that only archs, which implement all 
> of this, can make use of efficient tracing?

In the reverse you are enforcing an ugly - but available for all archs -
solution due to the fact that there is nobody interested enough to
implement it ?

If there is no interest to do that, then this arch can probably live w/o
instrumentation for the next decade too.

	tglx


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