[perf probe] How to ask what variables can be collected at function return?

[Arnaldo Carvalho de Melo]

How to figure out which variables can I collect at function return?
None?

I think we need a better error message :-)

[root@zoo ~]# perf probe -V getname_flags%return
Return probe must be on the head of a real function.
Debuginfo analysis failed.
  Error: Failed to show vars.
[root@zoo ~]# 


- Arnaldo
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