regression caused by 08f511fd41c3 ("cpufreq: Reduce cpufreq_update_util() overhead a bit")

[Jisheng Zhang]

Dear all,

I found one regression: In an idle system, wakeups/s (reported by powertop)
is increased a lot, e.g on a intel snb 4 core platform, the wakeup event
number is increased from 8 wakeups/s to 24 wakeup/s. bisect points to
this commit. I could send detailed bisect log if it's wanted.


Thanks,
Jisheng