Mark Haywood wrote:
> Rafael Vanoni wrote:
>> Hi folks
>>
>> On a system that does not support deep c-states, are these warnings 
>> expected ?
>
> From reading the code, I'd expect them because we always assume that 
> the system supports deep c-states and print these messages if no _CST 
> is exported. But, no. It is a bad idea to print these messages on 
> systems that aren't supporting deep c-states. It is a bug.

We should probably do something similar to what Anup did for T-states. 
He used dtrace probes for these type of errors.

>
> Mark
>
>>
>>
>> NOTICE: cpu_acpi: _CST evaluate failure
>> WARNING: cpu_acpi: error parsing _CST for CPU 1
>> NOTICE: cpu_idle_init: Failed to cache ACPI C-state data
>>
>> WARNING: cpupm_init: processor 1: unable to initialize C-state support
>> NOTICE: cpu_acpi: _CST evaluate failure
>> WARNING: cpu_acpi: error parsing _CST for CPU 2
>> NOTICE: cpu_idle_init: Failed to cache ACPI C-state data
>>
>> WARNING: cpupm_init: processor 2: unable to initialize C-state support
>> ..
>>
>>
>> Thanks,
>> Rafael
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>
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