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    SubjectRe: + restore-missing-sysfs-max_cstate-attr.patch added to -mm tree
    Venki Pallipadi wrote:
    > Reintroduce run time configurable max_cstate for !CPU_IDLE case.
    >
    > Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    >
    > Index: linux-2.6.24-rc/drivers/acpi/processor_idle.c
    > ===================================================================
    > --- linux-2.6.24-rc.orig/drivers/acpi/processor_idle.c
    > +++ linux-2.6.24-rc/drivers/acpi/processor_idle.c
    > @@ -76,7 +76,11 @@ static void (*pm_idle_save) (void) __rea
    > #define PM_TIMER_TICKS_TO_US(p) (((p) * 1000)/(PM_TIMER_FREQUENCY/1000))
    >
    > static unsigned int max_cstate __read_mostly = ACPI_PROCESSOR_MAX_POWER;
    > +#ifdef CONFIG_CPU_IDLE
    > module_param(max_cstate, uint, 0000);
    > +#else
    > +module_param(max_cstate, uint, 0644);
    > +#endif
    > static unsigned int nocst __read_mostly;
    > module_param(nocst, uint, 0000);
    >
    ..

    I'll try and re-test with this on Friday.

    Meanwhile, can you give a short summary of how behaviour differs
    between CONFIG_CPU_IDLE and !CONFIG_CPU_IDLE ??

    I'm not at all clear on how this really affects things.

    Thanks.


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