linux-kernel - Re: [tip:perf/core] events: Rename TRACE_EVENT_TEMPLATE() to DECLARE_EVENT

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Date:	Thu, 26 Nov 2009 14:47:01 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Frederic Weisbecker <fweisbec@...il.com>, mingo@...hat.com,
	hpa@...or.com, linux-kernel@...r.kernel.org,
	penberg@...helsinki.fi, tglx@...utronix.de,
	linux-tip-commits@...r.kernel.org, Christoph Hellwig <hch@....de>
Subject: Re: [tip:perf/core] events: Rename TRACE_EVENT_TEMPLATE() to
 DECLARE_EVENT_CLASS()

On Thu, 2009-11-26 at 14:44 -0500, Steven Rostedt wrote:

> Come to think of it, since current TRACE_EVENT is now just:
> 
> #define TRACE_EVENT() \
> 	TRACE_EVENT_TEMPLATE() \
> 	DEFINE_EVENT
> 
> This may make the most sense. I haven't tried it, but I believe that you
> could even base other events off of the TRACE_EVENT. That is:
> 
> TRACE_EVENT(x, ...);
> 
> DEFINE_EVENT(x, y, ...);
> 
> And y would use x as its class.
> 
> So going back to your scheme of DECLARE_EVENT_CLASS(), it may make sense
> to have DECLARE_AND_DEFINE_EVENT().
> 
> 
> DECLARE_EVENT_CLASS(class, ...);
> DEFINE_EVENT(class, foo, ...);
> 
> DECLARE_AND_DEFINE_EVENT(bar, ...);

Perhaps being the most descriptive to what it does:

	DECLARE_CLASS_AND_DEFINE_EVENT() ?

-- Steve

> 
> DEFINE_EVENT(bar, zoo, ...);
> 


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