rprobes + Function return probes status

[Rick Salmon Vishwanath]

Hi,

Can anyone shed some light on the current status of
rprobes i.e Function-return probes. I browsed through
the list archives and found some traffic on rprobes
around March 2005. 

I am basically looking for a maechanism that would let
me  log the arguments of a function call(jprobes-like)
and the return value of the function(kretprobes-like) 
simultaneously. I believe that rprobes were being
designed to facilitate this. Is there is any other
mechanism that would enable this?

Kind Regards,
Venkat

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