linux-kernel - Re: [PATCH 00/15] [git pull] for tip/tracing/ftrace

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Message-ID: <20090217143752.GB7576@elte.hu>
Date:	Tue, 17 Feb 2009 15:37:52 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Sam Ravnborg <sam@...nborg.org>, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 00/15] [git pull] for tip/tracing/ftrace


* Steven Rostedt <rostedt@...dmis.org> wrote:

> > > I implement a 'traceon' and 'traceoff' to have a function 
> > > start or stop tracing when it is hit. It also includes a 
> > > counter for the number of times to implement the trace on/off.
> > > 
> > >  echo '*_lock:traceon:4' > set_ftrace_filter
> > >  echo '*_unlock:traceoff:5' > set_ftrace_filter
> > 
> > if there's no counter specified, does it default to 1 
> > [single-shot trigger] or infinity?
> 
> Bad documentation on my part :-/
> 
> No number is infinity, since infinity is no number ;-)

Well infinity is a number too, in most schools of algebra, just 
one with unusual properties :)

	Ingo
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