Provided by: systemtap-doc_2.9-2ubuntu2_all 

NAME
tapset::ucontext - systemtap ucontext tapset
DESCRIPTION
umodname
Returns the (short) name of the user module.
See function::umodname(3stap)
for details.
ucallers
Return first n elements of user stack backtrace
See function::ucallers(3stap)
for details.
SEE ALSO
function::umodname(3stap), function::ucallers(3stap), stap(1), stapprobes(3stap)
IBM --- tapset::ucontext(3stap)