Re: [PATCH V1 3/6] cpufreq: Add a notification message that the highest perf has changed

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On Tue, Aug 08, 2023 at 04:09:58PM +0800, Meng Li wrote:
> Please refer to the ACPI_Spec for details on the highest
> performance and notify events of CPPC.

Please summarise so that we don't get to click random links on the
interweb just to try and make sense of things.

> Signed-off-by: Meng Li <li.meng@xxxxxxx>
> Link: https://uefi.org/htmlspecs/AddCPI_Spec_6_4_html/08_Processor_Configuration_and_Control/declaring-processors.html?highlight=0x85#highest-performance
> ---
>  drivers/acpi/processor_driver.c |  6 ++++++
>  drivers/cpufreq/cpufreq.c       | 13 +++++++++++++
>  include/linux/cpufreq.h         |  4 ++++
>  3 files changed, 23 insertions(+)
> 
> diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
> index 4bd16b3f0781..29b2fb68a35d 100644
> --- a/drivers/acpi/processor_driver.c
> +++ b/drivers/acpi/processor_driver.c
> @@ -27,6 +27,7 @@
>  #define ACPI_PROCESSOR_NOTIFY_PERFORMANCE 0x80
>  #define ACPI_PROCESSOR_NOTIFY_POWER	0x81
>  #define ACPI_PROCESSOR_NOTIFY_THROTTLING	0x82
> +#define ACPI_PROCESSOR_NOTIFY_HIGEST_PERF_CHANGED	0x85

Isn't that spelled: 'highest' ?
                        ^




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