tree 705f6ba74c25d29405f80e339a6562c81d145018
parent c4c7eb29382c456b9be9858c357a490ae0ccd0f6
author Steven Rostedt (Red Hat) <rostedt@goodmis.org> 1423517539 -0500
committer Steven Rostedt <rostedt@goodmis.org> 1423523139 -0500

tracing: Add TRACE_EVENT_FN example

If a function should be called before a tracepoint is enabled
and/or after it is disabled, the TRACE_EVENT_FN() serves this
purpose. But it is not well documented. Having it as a sample would
help developers to know how to use it.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>