On 28/06/18 07:42, Vidushi Vashishth wrote:
>which use case does this address? What is the connection to an RTEMS
application?
This converts the trace buffering of the fileio sample testcase output
to CTF. This pertains to the function tracing testcase. The CTF stream
generated records the entry and exit of the calloc, malloc, realloc
and free functions and also the values of the arguments and return values.
Could you please create a self-contained repository which contains
* a README
* a simple RTEMS application which runs on a simulator BSP
* the stuff that makes it possible to view the trace output (it is not a
problem if it doesn't work, but all pieces should be included)
The repository should not be a clone of some larger project. It may
contain external references as submodules.
>Why do I need sudo to run the commands?
The command needs permission to create a directory for the traces. The
command did not work without this.
It worked without sudo in my clone. Using sudo for this kind of stuff
would be a very severe usability issue from my point of view.
>Why do I need your babeltrace? Not being able to use a tool from a standard distribution
makes it harder to do RTEMS tracing.
I wanted to work on integrating barectf with RTEMS trace linker
instead. I documented the approach in:
https://vidushivashishth.github.io/sixthpost/.
Could you please also post your stuff on the devel@rtems.org mailing
list. I don't have time to look for blog posts actively.
Did you modify babeltrace?
Why do you need a very recent babeltrace for your work?
I was stuck on deciding the yaml configuration input for the process
and sent out an email for this discussion on the mailing list as well.
I have however finally created one. I can continue work on the barectf
approach if that is okay with you? I will start a new thread on this
with the configuration file I have chosen?
I need a demo projects which puts all the pieces together. This is all
to abstract to me.
>What can I do with a metadata stream and the CTF trace stream?
These can be transported to the host and then viewed using Trace Compass.
I lost some time trying to figure things out on my own. I will be more
frequent in communicating places where I am stuck. Apologies for the same.
Is visualization with Trace Compass a goal of this project?
--
Sebastian Huber, embedded brains GmbH
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