Sharing information between scheduler and frameworks

This topic is scheduled with "How to improve the selection of the target cpu in the timer and workqueue framework":
https://blueprints.launchpad.net/lpc/+spec/lpc2012-sched-timer-workqueue

The scheduler could take advantage of information from other frameworks, when it selects run queue for a task. These information are helpful not only for power consumption but also for performance by giving a mask of preferred CPUs. As an example, the wake up latency of a task is impacted by the C-states of the selected CPU. Choosing a CPU with a low C-state will reduce this latency.

This talk will discuss the various inputs that could be shared with the scheduler