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My understanding is that when a CPU is in the C0 state, the cpufreq governor decides what P-state the CPU should reside in. When a CPU goes idle, it falls from the C0 state to a deeper C-state. The cpuidle govenor, say menu, takes over in deciding which C-state the CPU should go to, once the CPU goes idle. Is my understanding correct?

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You have 7 questions and not single accept... maybe it's time to try accepting one? –  Kyle May 16 '11 at 20:30
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