On 2019/2/14 19:39, John Garry wrote:
> 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.
Thanks, I will add changelog next time.
Xiongfeng
>
> 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(+)
>>
>
>
>
> .
>
