Re: [PATCH v2 0/2] Work around for Hisilicon CPPC cpufreq

[John Garry]

On 14/02/2019 07:46, Xiongfeng Wang wrote:
> Hisilicon chips do not support delivered performance counter register
> and reference performance counter register. But the platform can
> calculate the real performance using its own method. This patch provide
> a workaround for this problem, and other platforms can also use this
> workaround framework. We reuse the desired performance register to
> store the real performance calculated by the platform. After the
> platform finished the frequency adjust, it gets the real performance and
> writes it into desired performance register. OS can use it to calculate
> the real frequency.

It would be convenient for reviewers to detail what changed between 
versions in future.

John

> Xiongfeng Wang (2):
>   ACPI / CPPC: Add a helper to get desired performance
>   cpufreq / cppc: Work around for Hisilicon CPPC cpufreq
>
>  drivers/acpi/cppc_acpi.c       | 38 +++++++++++++++++++++++
>  drivers/cpufreq/cppc_cpufreq.c | 70 ++++++++++++++++++++++++++++++++++++++++++
>  include/acpi/cppc_acpi.h       |  1 +
>  3 files changed, 109 insertions(+)