[ltt-dev] simple userspace tracing with LTTng 0.9.10

Mathieu Desnoyers compudj at krystal.dyndns.org
Wed Jan 28 10:56:43 EST 2009


* Akyurek, Ali (EXT) (ali.akyurek.ext at siemens.com) wrote:
> Hi all,
>  
> I've used simple userspace event tracing with the latest version by
> writing to the  mnt/debugfs/ltt/write_event.
> But now i'm using an old LTTng (because i have to), 0.9.10. 
> 
> Is it possible to port this simple uspace tracing feature to the old
> lttng versions?
> 
> Or it is not possible because of some architectural restrictions of
> kernel or LTTng?
> Thanks.
> 

That should be easily doable, as long as you have a kernel with debugfs.

The main patch concerned is :
lttng-userspace-write-event.patch

Mathieu

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-- 
Mathieu Desnoyers
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