Fix up build error on UP and show correctly number of function call
(ipi) irqs.
Signed-off-by: NHelge Deller <deller@gmx.de>

Add framework and initial values for more fine grained statistics in
/proc/interrupts.
Signed-off-by: NHelge Deller <deller@gmx.de>

Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NKyle McMartin <kyle@mcmartin.ca>

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!