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    SubjectRe: [RFC PATCH V3 2/3] cpuidle: list based cpuidle driver registration and selection
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    On Tue, 2011-02-08 at 16:22 +0530, Trinabh Gupta wrote:
    > A cpuidle_driver is global in nature as it provides routines
    > for all the CPUS. Each CPU registered with the cpuidle subsystem is
    > represented as a cpuidle_device. A cpuidle_device structure
    > points to the low level idle routines for that CPU provided by
    > a certain driver. In other words, a cpuidle driver creates a
    > cpuidle_device structure for each CPU that it registers with the
    > cpuidle subsystem. Whenever cpuidle idle loop is called, the cpuidle
    > subsystem picks the cpuidle_device structure for that cpu and
    > calls one of the low level idle routines through that structure.

    Why all this per-cpu nonsense? I thought we all agreed that ACPI tables
    specifying non-uniform C states were considered buggy and we should
    simply use the intersection of all cpus.





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