The majority of these changes are from Masami Hiramatsu bringing

kprobes up to par with the latest changes to ftrace (multi buffering
and the new function probes).

He also discovered and fixed some bugs in doing so. When pulling in his
patches, I also found a few minor bugs as well and fixed them.

This also includes a compile fix for some archs that select the ring buffer
but not tracing.

I based this off of the last patch you took from me that fixed the merge
conflict error, as that was the commit that had all the changes I needed
for this set of changes.
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