Re: [PATCH v2] intel_idle: introduce 'no_native' module parameter

David Arcari
2025-02-07T17:13:39Z

Hi Artem,

On 2/7/25 10:55 AM, Artem Bityutskiy wrote:
> Hi David,
>
> On Thu, 2025-02-06 at 11:40 -0500, David Arcari wrote:
>> +The ``no_acpi``, ``use_acpi`` and ``no_native`` module parameters are
>> +recognized by ``intel_idle`` if the kernel has been configured with ACPI
>> +support).
>
> And if kernel was not configured with ACPI support, are these not recognized? Or
> they are just no-op basically?

They are a no-op - the flags are all set to false so ACPI C-state tables
are ignored.

>
> Looks like there is a stray ")" at the end.
>

Yes I will fix that.

>> +
>> +``no_acpi`` - Do not use ACPI at all.  Only native mode is available, no
>> +ACPI mode.
>> +
>> +``use_acpi`` - No-op in ACPI mode; however, the driver will consult ACPI
>> +tables for C-states on/off status in native mode.
>
> I think "however" part is a bit confusing. Would you consider re-phrasing
> without "however" ?

Sure - so is this better:

``use_acpi`` - No-op in ACPI mode, the driver will consult ACPI tabees
for C-states on/off status in native mode.

Thanks,
-DA
>
>> +
>> +``no_native`` - Work only in ACPI mode, no native mode available (ignore
>> +all custom tables).
>
> Other than these small nitpicks,
>
> Reviewed-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
> Tested-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
>
> (I tested it on an Intel Broadwell platform).
>
> Thanks!
>