LTTng 2.0 Userspace Tracer (common library)

 The userspace tracer is designed to provide detailed information about
 userspace activity. Like the kernel tracer, performance is the main goal.
 Tracing does not require system calls or traps. UST instrumentation points may
 be added in any userspace code including signal handlers and libraries.
 .
 This package contains the common library used by the tracing and control
 libraries.