Provided by: systemtap-doc_2.3-1ubuntu1.4_all 

NAME
function::pexecname - Returns the execname of a target process's parent process
SYNOPSIS
pexecname:string()
ARGUMENTS
None
DESCRIPTION
This function returns the execname of a target process's parent procces.
SystemTap Tapset Reference March 2016 FUNCTION::PEXECNAME(3stap)