Re: [ANNOUNCE] New utility: 'trace'

[Frederic Weisbecker]

On Wed, Nov 17, 2010 at 12:35:50PM +0100, Peter Zijlstra wrote:
> On Wed, 2010-11-17 at 09:30 +0100, Ingo Molnar wrote:
> > > For example I'm currently working with dozens of trace_printk() and I would be 
> > > very happy to turn some of them off half of the time.
> > 
> > I guess we could try such a patch. If you send a prototype i'd be interested in 
> > testing it out.
> 
> I don't see the point, the kernel shouldn't contain any trace_printk()s
> to begin with..


It's oriented toward developers. Those who use dozens of tracepoints in
their tree because they are debugging something or developing a new feature,
they might to deactivate/reactivate some of these independant points.

This can also apply to dynamic_printk of course.

Well, the very first and main point is to standardize trace_printk into
a trace event so that it gets usable by perf tools. I have been asked many
times "how to use trace_printk() with perf?".

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