I have code that will cause a warning if a trace event or tracepoint is
created but not used. Trace events can take up to 5K of memory in text
and meta data per event. There's a lot of events in the XFS file system
that are not used, but one in particular was added by commit
59a57acbce282 ("xfs: check that the rtrmapbt maxlevels doesn't increase
when growing fs"). That event is xfs_growfs_check_rtgeom, but it was
never called.
It looks like it was just an oversight. I'm holding off from deleting
it as it may still be valid but just never been added. It was added
relatively recently.
-- Steve
