[PATCH 3/5] cpufreq: qcom-cpufreq-hw: Update offline CPUs per-cpu thermal pressure

[Lukasz Luba]

On 10/11/21 10:17 PM, Thara Gopinath wrote:
> 
> 
> On 10/7/21 4:07 AM, Lukasz Luba wrote:
>> The thermal pressure signal gives information to the scheduler about
>> reduced CPU capacity due to thermal. It is based on a value stored in
>> a per-cpu 'thermal_pressure' variable. The online CPUs will get the
>> new value there, while the offline won't. Unfortunately, when the CPU
>> is back online, the value read from per-cpu variable might be wrong
>> (stale data).  This might affect the scheduler decisions, since it
>> sees the CPU capacity differently than what is actually available.
>>
>> Fix it by making sure that all online+offline CPUs would get the
>> proper value in their per-cpu variable when there is throttling
>> or throttling is removed.
>>
>> Fixes: 275157b367f479 ("cpufreq: qcom-cpufreq-hw: Add dcvs interrupt 
>> support")
>> Signed-off-by: Lukasz Luba <lukasz.luba at arm.com>
> 
> Thanks for the fix.
> 
> Reviewed-by: Thara Gopinath <thara.gopinath at linaro.org>
> 

Thank you for the review!