.Add three statically-known context fields to be recorded to a specific user space channel of a specific tracing session.
====
+See the option:--session and option:--channel options.
+
[role="term"]
----
$ lttng add-context --userspace --session=my-session \
.Add a perf counter context field to be recorded to a specific Linux kernel channel of the current tracing session.
====
+See the option:--channel option.
+
[role="term"]
----
$ lttng add-context --kernel --channel=my-channel \