[lttng-dev] Branch coverage

[Mathieu Desnoyers]

----- On Jun 21, 2017, at 4:41 PM, lttng-dev lttng-dev at lists.lttng.org wrote:

> Hello together,
> 
> 
> I already using lttng for function coverage. Now I want to trace branch
> coverage as well. Is it possible to trace jump labels like jle and jne
> and so on?
> 
> Could you give me a hint how to solve this? In the attached file there
> is the disassembly of the function 40195c <thread_start_read_fast>. How
> can I trace the jump label e.g:
> 
> 
> 4019b1:     jbe 4019by <thread_start_read_fast+0x60>
> 
> 
> At the moment iam using the liblttng-ust-cyg-profile.so for the
> function_entry and function_exit.

This use-case is not currently supported,

Best regards,

Mathieu


> 
> 
> Thanks for your help.
> 
> Best Regards
> 
> 
> Kai
> 
> 
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-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com