1. Rearrange commits for -test branch work
2. Several minor changes upon 0472, which includes
57374d9 bfs/vrq: Do not need to set_task_cpu() in task_preemptable_rq()
7a1262a bfs/vrq: task_cpu_hotplug() update
cbfc46d bfs/vrq: Deploy cpufreq_trigger() in task_preempt_rq()
7829fd9 bfs/vrq: Add WARN_ON_ONCE() when to_wakeup equal prev
Currently, -test branch rework is on going, hopefully be available at the weekend for testing.
Enjoy it, :)