Re: [PATCH v5 6/7] thermal: netlink: Add a new event to notify CPU capabilities change

[Lukasz Luba <lukasz.luba@arm.com>]

On 1/30/22 3:20 PM, Rafael J. Wysocki wrote:
> On Thu, Jan 27, 2022 at 8:33 PM Ricardo Neri
> <ricardo.neri-calderon@linux.intel.com> wrote:
>>
>> From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
>>
>> Add a new netlink event to notify change in CPU capabilities in terms of
>> performance and efficiency.
>>
>> Firmware may change CPU capabilities as a result of thermal events in the
>> system or to account for changes in the TDP (thermal design power) level.
>>
>> This notification type will allow user space to avoid running workloads
>> on certain CPUs or proactively adjust power limits to avoid future events.
>>
>> The netlink message consists of a nested attribute
>> (THERMAL_GENL_ATTR_CPU_CAPABILITY) with three attributes:
>>
>>   * THERMAL_GENL_ATTR_CPU_CAPABILITY_ID (type u32):
>>     -- logical CPU number
>>   * THERMAL_GENL_ATTR_CPU_CAPABILITY_PERFORMANCE (type u32):
>>     -- Scaled performance from 0-1023
>>   * THERMAL_GENL_ATTR_CPU_CAPABILITY_EFFICIENCY (type u32):
>>     -- Scaled efficiency from 0-1023
>>
>> Cc: Andi Kleen <ak@linux.intel.com>
>> Cc: Aubrey Li <aubrey.li@linux.intel.com>
>> Cc: Lukasz Luba <lukasz.luba@arm.com>
>> Cc: Tim Chen <tim.c.chen@linux.intel.com>
>> Cc: "Ravi V. Shankar" <ravi.v.shankar@intel.com>
>> Reviewed-by: Len Brown <len.brown@intel.com>
>> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
> 
> Daniel, Lukasz, if you have any comments or concerns regarding this
> patch, please let me know.
> 

My apologies Rafael, I missed that email.

I've looked at the patches 6/7 and 7/7 and they look OK with the
scaling.