> Where can I find information on trace events?  Something in Documentation/*?

Yep, Documentation/trace/events.txt.

Also look at eg include/trace/events/ext4.h and how the trace_ext4_{xxx}
functions are used in fs/ext4/*.

It's much better than anything you're going to hack up for a single
driver to use.

 - R.
-- 
Roland Dreier <rola...@cisco.com> || For corporate legal information go to:
http://www.cisco.com/web/about/doing_business/legal/cri/index.html
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