[ltt-dev] I do not see the subsystem_event (from the example) from lttv

[Mathieu Desnoyers]

* Stefano Panella (stefano.panella at csr.com) wrote:
> Hi all!
>
> After loading markers_example.ko and probe_example.ko I have executed 

I guess you mean marker_example..

> ltt-armall and I have start tracing,
>
> after that i have executed
>
> cat /proc/marker_example
>
> and I have seen the output from dmesg...
>
> then I have stopped the "semaphore" but when I say yes and I start lttv to 
> view the result I do not see the subsystem_event in the list of events.
>
> Is that normal?
>

I did the same as you with LTTng 0.58.

Then after stopping the trace, I did

lttv -m textDump -t /tmp/trace -e "event.name=subsystem_event"

And got :

subsystem_event: 2053.607746661 (/tmp/trace/control/cpu_6), 18110,
18110, /bin/cat, , 17571, 0x0, SYSCALL { integer = 123, string =
"example string" }

So it seems to work fine. Maybe you did not see it in the graphical view
because there are too many things happening ? Using filters could help.
The filter is also available in the GUI. It's represented as a logical
AND door.

Also make sure that ltt-armall lists :

Connecting subsystem_event
Connecting subsystem_eventb

Mathieu

> Thanks,
>
> Stefano.
> -- 
> Stefano Panella, Software Engineer, Drivers
> CSR, Churchill House, Cambridge Business Park,  Tel: +44 (0)1223 692452
> Cowley Road, Cambridge, CB4 0WZ                 http://www.csr.com/
>
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-- 
Mathieu Desnoyers
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