Re: Fwd: 5c8a79e8e12b ("wifi: rtw88: correct PS calculation for SUPPORTS_DYNAMIC_PS", 2023-05-27) increases CPU usage usage for irq

[Thorsten Leemhuis]

On 16.09.23 01:04, brett hassall wrote:
> 
> I'd suggest that there are actually 2 regressions
> (https://bugzilla.kernel.org/show_bug.cgi?id=217841 and this bug). Bug
> 217841 masks this bug

Is that maybe a duplicate of this one:
https://bugzilla.kernel.org/show_bug.cgi?id=217321

In that case it might make sense to test with a proposed fix for that
bug (that iirc is
https://lore.kernel.org/all/20230911073352.3472918-1-mika.westerberg@xxxxxxxxxxxxxxx/
) to speed up fixing the rtw88 regression in case there is one.

Ciao, Thorsten

> as it prevents the laptop reaching package C8
> and I'm assuming this bug shows when in C8. The patch for 21784 only
> affects devices connected to a VMD controller so I wouldn't expect it
> to affect the 8822CE.
> 
> Options that I can see are:
> 1. Park this bug until 217841 is resolved
> 2. Try to test on a laptop with a Realtek 8822CE but not a VMD
> controller. I have access to 5 different laptop models but none meet
> those criteria.
> 
> 
> Thanks for the reply
> Brett
> 
> On Mon, 11 Sept 2023 at 23:29, Linux regression tracking (Thorsten
> Leemhuis) <regressions@xxxxxxxxxxxxx> wrote:
>>
>> On 27.08.23 04:37, Bagas Sanjaya wrote:
>>>
>>> I notice a regression report on Bugzilla [1]. Quoting from it:
>>>
>>>> This commit improves power saving - it enables the kernel to
>>>> achieve package C8. To achieve package C8, 3 Ubuntu VMD commits
>>>> must be applied as well. [...]
>>
>> To me that sounds like there is no upstream problem, hence this
>> shouldn't be tracked as a regression. Please correct me if I'm wrong.
>>
>>> #regzbot introduced: 26a125f550a3bf
>>> https://bugzilla.kernel.org/show_bug.cgi?id=217828 #regzbot title:
>>> correcting SUPPORTS_DYNAMIC_PS calculation for rtw88 increases CPU
>>> utilization #regzbot link:
>>> https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.2/+bug/2025040
>>>
>>> Thanks.
>>>
>>> [1]: https://bugzilla.kernel.org/show_bug.cgi?id=217828
>>
>> #regzbot resolved: invalid: seems to only be a problem with a patched kernel
>> #regzbot ignore-activity
>>
>> Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
>> --
>> Everything you wanna know about Linux kernel regression tracking:
>> https://linux-regtracking.leemhuis.info/about/#tldr
>> If I did something stupid, please tell me, as explained on that page.
>>
>>
> 
>