lkml.org 
[lkml]   [2024]   [Jan]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH 1/3] ACPI: CPPC: Add get the highest perf register value support
From

On 2024/1/18 06:07, Ricardo Neri wrote:
>
> [这封邮件来自外部发件人]
>
> On Thu, Dec 28, 2023 at 03:57:03PM +0800, Tony W Wang-oc wrote:
>> Add function cppc_get_highest_perf in generic CPPC driver to get the
>> highest perf register value for specified core.
>>
>> Signed-off-by: Tony W Wang-oc <TonyWWang-oc@zhaoxin.com>
>> ---
>> drivers/acpi/cppc_acpi.c | 13 +++++++++++++
>> include/acpi/cppc_acpi.h | 5 +++++
>> 2 files changed, 18 insertions(+)
>>
>> diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
>> index 7ff269a78c20..1a77c514d007 100644
>> --- a/drivers/acpi/cppc_acpi.c
>> +++ b/drivers/acpi/cppc_acpi.c
>> @@ -1154,6 +1154,19 @@ int cppc_get_nominal_perf(int cpunum, u64 *nominal_perf)
>> return cppc_get_perf(cpunum, NOMINAL_PERF, nominal_perf);
>> }
>>
>> +/**
>> + * cppc_get_highest_perf - Get the highest performance register value.
>> + * @cpunum: CPU from which to get highest performance.
>> + * @highest_perf: Return address.
>> + *
>> + * Return: 0 for success, -EIO otherwise.
>> + */
>> +int cppc_get_highest_perf(int cpunum, u64 *highest_perf)
>> +{
>> + return cppc_get_perf(cpunum, HIGHEST_PERF, highest_perf);
>> +}
>> +EXPORT_SYMBOL_GPL(cppc_get_highest_perf);
> The Intel P-State driver uses cppc_get_perf_caps(). You would not need to
> export this function.
>
> Having said that, the Intel P-State driver could also use this new
> function, IMO. AFAICS, it does not *have* to use cppc_get_perf_caps().

Yes, you are right.


\
 
 \ /
  Last update: 2024-05-27 14:41    [W:2.344 / U:0.004 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site