I guess what I'm getting at is: What ABI are we creating here? Can
these tracepoints come and go without any consequence? Or would changing
them in the future cause application breakage?
I'm somewhat worried even trace_tod_update() is maybe too vague (again
not that the name specifically is critical, but that the semantics we're
specifying are clear). In other words, I think you're wanting a
tracepoint at any time CLOCK_REALTIME is updated by anything other then
the normal progression of time? Is that right?
You may want to also include the leapsecond modification in the tracing
as well.