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

NAME
function::module_name - The module name of the current script
SYNOPSIS
module_name:string()
ARGUMENTS
None
DESCRIPTION
This function returns the name of the stap module. Either generated randomly (stap_[0-9a-f]+_[0-9a-f]+)
or set by stap -m <module_name>.
SystemTap Tapset Reference March 2016 FUNCTION::MODULE_NAM(3stap)