Please review: shared interrupts with fast handlers

[Marcel Moolenaar]

All,

Attached a patch to support interrupt sharing with fast handlers. It's
pretty much copied from ia64. Please review.

With these changes, vmstat -i shows:

imac% vmstat -i
interrupt                          total       rate
irq19:                            102984          2
irq27:                                 3          0
irq28:                                 1          0
irq40:                                 1          0
irq41:                             25400          0
Total                             128389          2

I think this is the same as before, but can't really test right now.
It's not that informative though. It's probably nicer to see the
actual device name, as in:

imac% vmstat -i
interrupt                          total       rate
irq19:                            102984          2
ohci0:                                 3          0
ohci1:                                 1          0
fwohci0:                               1          0
gem0:                              25400          0
Total                             128389          2

Did I changethe output of vmstat -i?
If not, should I do that?

Thanks,

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-- 
Marcel Moolenaar
xcllnt at mac.com