[$] Energy-aware scheduling on asymmetric systems

Energy-aware scheduling - running a system's workload in a way thatminimizes the amount of energy consumed - has been a topic of activediscussion and development for some time; LWN first covered the issue at the beginning of 2012.Many approaches have been tried during the intervening years, but little inthe way of generalized energy-aware scheduling work has made it into themainline. Recently, a new patch set wasposted by Dietmar Eggemann that only tries to address one aspect of the problem; perhaps the problem domainhas now been simplified enough that this support can finally be merged.