Provided by: systemtap-doc_2.3-1ubuntu1_all bug

NAME

       function::ucallers - Return first n elements of user stack backtrace

SYNOPSIS

           ucallers:string(n:long)

ARGUMENTS

       n
           number of levels to descend in the stack (not counting the top level). If n is -1,
           print the entire stack.

DESCRIPTION

       This function returns a string of the first n hex addresses from the backtrace of the user
       stack. Output may be truncated as per maximum string length (MAXSTRINGLEN).

NOTE

       To get (full) backtraces for user space applications and shared shared libraries not
       mentioned in the current script run stap with -d /path/to/exe-or-so and/or add --ldd to
       load all needed unwind data.