dev-util/lttng-ust
Linux Trace Toolkit - UST library
USE Flags
examples
Global: Install examples, usually source code
numa
Global: Use NUMA for memory segmenting via sys-process/numactl
test
Global: Workaround to pull in packages needed to run with FEATURES=test. Portage-2.1.2 handles this internally, so don't set it in make.conf/package.use anymore