On 26 May 2014 00:27, Ryan ryanphilips19@googlemail.com wrote:
What is the difference between cpufreq policy and governors?
Probably you can go through Documentation/cpu-freq/* for this information. Governor decides which frequency you will switch to and when. Policy decides which frequencies you *can* switch to.
Are there a different cpufreq policy structure created for each cpu?
A separate policy exists for each group of CPU sharing clock line. So, it may happen that there is a policy per CPU if they don't share clock line at all..
Will policy structure change when governor changes or when will it change?
Policy structure doesn't change with governor. It will get updated only when you try to play with min/max frequency a CPU can switch to OR hotplug/unplug a CPU..