LTTng UST (User-Space Tracer) Licensing Mathieu Desnoyers December 5, 2012 * LGPLv2.1 This library is distributed under the LGPLv2.1 license. It is intended to allow use of the tracer API from both free and proprietary software. * MIT license : Public header files, and LTTng filter runtime code are distributed under the MIT license. See mit-license.txt for details. * GPLv2 Library test code is distributed under the GPLv2 license, as specified in the per-file license. See gpl-2.0.txt for details. A copy of the perf_event.h Linux kernel installed header file is also licensed under GPLv2.