K 10
svn:author
V 3
mav
K 8
svn:date
V 27
2009-07-16T08:27:12.011165Z
K 7
svn:log
V 557
MFC rev. 191760, 191763, 191764.

Avoid comparing negative signed to positive unsignad values. It was
leading to a bug, when C-state does not decrease on sleep shorter then
declared transition latency. Fixing this deprecates workaround for broken
C-states on some hardware.

By the way, change state selecting logic a bit. Instead of last sleep
time use short-time average of it. Global interrupts rate in system is a
quite random value, to corellate subsequent sleeps so directly.

Make dev.cpu.X.cx_usage sysctl also report current average of sleep time.

END