[lttng-dev] Add pid context to UST events

[Mathieu Desnoyers]

* Francis Giraldeau (francis.giraldeau at gmail.com) wrote:
> Hi,
> 
> I tried to add pid context to UST events to distinguish events from
> multiple processes. I do have this error:
> 
> $ lttng create bidon
> Session bidon created.
> Traces will be written in /home/francis/lttng-traces/bidon-20120601-142031
> 
> $ lttng enable-event -a -u
> All UST events are enabled in channel channel0
> 
> $ lttng add-context -u -t pid
> Error: pid: UST invalid context
> Warning: Some command(s) went wrong
> 
> Am I doing something wrong?

lttng add-context -u -t vpid

should do it. (notice the "v").

Eventually we should implement something that looks like a

lttng list -u --context

to list the per-domain contexts available.

Thanks,

Mathieu

> 
> Thanks!
> 
> Francis
> 



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-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com