Re: a better reschedule_idle() and goodness()

[Alan Cox]

> priorities too, giving much finer control over reschedules. It's basically
> a framework for doing reschedules on any CPU, from whatever other CPU, by
> sending point-to-point IPIs (inter-CPU-interrupts). Currently it deals
> with idle CPUs only, but as current patches have shown, it can easily be
> extended to implement arbitrary SMP rescheduling logic.

Note that in some cases (like when someone implements ACPI power management)
there are a lot of cases where you want to move IRQ's off the unloaded
processor. Also IRQ's often have a data affinity with the active process when
there is only one.


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