+previously enabled with the man:lttng-enable-channel(1) command.
+
+A channel always belongs to a tracing session (see man:lttng-create(1)
+to create a tracing session). Without the option:--session option, the
+`disable-channel` command disables one or more channels of the current
+tracing session (see man:lttng-create(1) and man:lttng-set-session(1) to
+learn more about the current tracing session).