On Tue, 2005-02-01 at 21:17 +0100, Ingo Molnar wrote:
> * Lee Revell <[EMAIL PROTECTED]> wrote:
> 
> > Assuming it's still available, what is the config option to get the
> > "User-space atomicity debugging" feature?  This feature is extremely
> > useful for debugging complex JACK clients, several Linux audio
> > developers have asked me about it but I can't find the config option
> > anymore.
> 
> it's always-on in the -RT tree (it's a pretty low-overhead thing). I
> havent changed the mechanism so the jackd hacks from a couple of weeks
> ago should still work.
> 

OK.  So for application triggered tracing you need 
LATENCY_TRACING enabled, as described here:

http://lkml.org/lkml/2004/10/29/312

Lee

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