Re: [PATCH v1] Revert "cpufreq: schedutil: Move max CPU capacity to sugov_policy" #forregzbot

[Thorsten Leemhuis]

On 20.11.22 19:07, Thorsten Leemhuis wrote:
> On 10.11.22 20:57, Sam Wu wrote:
>> This reverts commit 6d5afdc97ea71958287364a1f1d07e59ef151b11.
>>
>> On a Pixel 6 device, it is observed that this commit increases
>> latency by approximately 50ms, or 20%, in migrating a task
>> that requires full CPU utilization from a LITTLE CPU to Fmax
>> on a big CPU. Reverting this change restores the latency back
>> to its original baseline value.
>>
>> Fixes: 6d5afdc97ea7 ("cpufreq: schedutil: Move max CPU capacity to sugov_policy")
>> Cc: Lukasz Luba <lukasz.luba@xxxxxxx>
>> Cc: Saravana Kannan <saravanak@xxxxxxxxxx>
>> Cc: Isaac J. Manjarres <isaacmanjarres@xxxxxxxxxx>
>> Signed-off-by: Sam Wu <wusamuel@xxxxxxxxxx>
> 
> Thanks for the report. To be sure below issue doesn't fall through the
> cracks unnoticed, I'm adding it to regzbot, my Linux kernel regression
> tracking bot:
> 
> #regzbot ^introduced 6d5afdc97ea7
> #regzbot title cpufreq: schedutil: improved latency on Pixel 6
> #regzbot ignore-activity

#regzbot fixed-by: cdcc5ef26b3