linux-kernel - Re: Unified tracing buffer

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Date:	Sat, 20 Sep 2008 10:10:49 +0200
From:	Olaf Dabrunz <od@...e.de>
To:	Martin Bligh <mbligh@...gle.com>
Cc:	Randy Dunlap <randy.dunlap@...cle.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Mathieu Desnoyers <compudj@...stal.dyndns.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	"od Frank Ch. Eigler" <fche@...hat.com>
Subject: Re: Unified tracing buffer

On 19-Sep-08, Martin Bligh wrote:
> >> Sorry, probably lots of implicit assumptions in there that I forgot to explain
> >
> > Ids for event types. Either allocated dynamically, if the tracer needs
> > new ids on each use, or statically assigned for others (like my fctrace
> > or Steven's ftrace, I believe). Should we have a reserved range / registry
> > for static allocation, maybe something like a very simple version of
> > devices.txt?
> 
> Sure, but it's per-tracer, so hopefully won't be a big problem (eg fctrace
> would have a different event-id namespace from blktrace)

Ah, that is right. We can distinguish them.

-- 
Olaf Dabrunz (od/odabrunz), SUSE Linux Products GmbH, Nürnberg

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