systemtap-sdt-dev 2.6-0.2ubuntu1 (i386 binary) in ubuntu vivid

 This package contains header file and executable (dtrace) that
 can be used to add static probes into userspace applications
 for use with SystemTap.
 .
 SystemTap provides infrastructure to simplify the gathering of
 information about the running Linux system.
 .
 To be able to write new SystemTap probes, install systemtap package.