User-space tracing on ARM

[Turgis, Frederic]

Hi

After using systemtap a lot to probe kernel, we would like to move on to user-space probing on ARM. This requires uprobes/utrace so I asked a few questions on utrace-devel mailing list. However this forum is also concerned:

- Is anyone probing user-space on ARM with systemtap ? I asked the question in the context of Linaro organization and I did not get anwers :-(

- how does systemtap compare to other tools for user-space ? I understand it may be the only front-end tool to dynamically instrument process functions through uprobes (or maybe LTTng with gdb tracepoints). In terms of perf, could be less good than tools focusing only on user-space but that is also a quality to focus on both kernel and user-space. And with regards to our amount of trace data, perf is not a key criteria.


Thanks for your inputs.


Regards
Fred

Frederic Turgis
OMAP Platform Business Unit - OMAP System Engineering - Platform Enablement


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