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    SubjectRe: [v7 PATCH 0/7]: cpuidle/x86/POWER: Cleanup idle power management code in x86, cleanup drivers/cpuidle/cpuidle.c and introduce cpuidle to POWER.
    * Arun R Bharadwaj <arun@linux.vnet.ibm.com> [2009-10-06 20:54:21]:

    > Hi
    >
    > Please consider this for inclusion into the testing tree.
    >
    > This patchset introduces cpuidle infrastructure to POWER, prototyping
    > for pSeries, and also does a major refactoring of current x86 idle
    > power management and a cleanup of cpuidle infrastructure.
    >
    > Earlier discussions on the same can be found at:
    >
    > v6 --> http://lkml.org/lkml/2009/9/22/180
    > v5 --> http://lkml.org/lkml/2009/9/22/26
    > v4 --> http://lkml.org/lkml/2009/9/1/133
    > v3 --> http://lkml.org/lkml/2009/8/27/124
    > v2 --> http://lkml.org/lkml/2009/8/26/233
    > v1 --> http://lkml.org/lkml/2009/8/19/150
    >
    >
    > Changes in this version:
    > -----------------------------------------
    >
    > * Earlier implementation maintained a list of cpuidle devices and
    > the list was traversed to disable and enable the cpuidle devices
    > when switching governors. This list is not necessary and is removed.
    > Now, we get the per cpu structure cpuidle_devices and disable and
    > enable it for each online cpu while switching governors.
    >
    > * Earlier iterations were buggy w.r.t the sysfs interface of the cpuidle.
    > This iteration removes the bug in PATCH 1/7.
    >
    > * In PATCH 7/7, smt_snooze_delay was not being updated whenever it was
    > changed through the sysfs interface. Provide a helper routine to
    > update it.
    >
    > * In PATCH 7/7, the idle loops are renamed to denote the idle states
    > to avoid any confusion.
    >

    Also, the per-cpu nature of registration/unregistration of cpuidle
    has been maintained as ACPI needs this.

    >
    > thanks,
    > arun


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