signed int for interrupts??

Jon Lewis (jlewis@inorganic5.fdt.net)
Sun, 8 Sep 1996 03:28:57 -0400 (EDT)

This was a disappointment. I was looking forward to seeing my Cyclades
interrupt count wrap at 2^32 and start counting up again...but just
noticed that procinfo was reporting it to be stuck at (2^31)-1. Looking
into /proc revealed this:

endor:~# cat /proc/interrupts
0: 340944036 timer
1: 538 keyboard
2: 0 cascade
5: 1649726484 + cyclades
9: 12023652 53c8xx
10: 231379880 3c509
11: -2104643917 + cyclades
13: 1 math error

Since a device can't really have a negative interrupt count (can it?),
shouldn't these be unsigned ints? Irq 11 is now counting up from -(2^31).
I guess Irq 11 will still hit 0 in about a month. I just didn't expect it
to approach from that side.

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