trace-cmd library: Add tracecmd_follow_event()

Add the tracecmd_follow_event() to make it easier for applications to
have a callback for specific events when calling either
tracecmd_iterate_events() or tracecmd_iterate_events_multi()

Link: https://lore.kernel.org/linux-trace-devel/20220922013737.3302850-2-rostedt@goodmis.org

Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2 files changed