Re: [PATCH 0/6] Backport rework of deadline bandwidth restoration for 6.1.y

From: Qais Yousef
Date: Mon Aug 21 2023 - 17:59:01 EST


On 08/21/23 15:26, Greg KH wrote:
> On Sun, Aug 20, 2023 at 04:24:11PM +0100, Qais Yousef wrote:
> > This is a backport of the series that fixes the way deadline bandwidth
> > restoration is done which is causing noticeable delay on resume path. It also
> > converts the cpuset lock back into a mutex which some users on Android too.
> > I lack the details but AFAIU the read/write semaphore was slower on high
> > contention.
> >
> > Compile tested against some randconfig for different archs and tested against
> > android14-6.1 GKI kernel.
> >
> > My testing is limited to resume path only; and general phone usage to make sure
> > nothing falls apart. Would be good to have some deadline specific testing done
> > too.
> >
> > Based on v6.1.46
>
> I can't take these for only some branches, as you know. Any reason why
> you didn't also do 6.4.y?

Beside being tunneled visioned towards LTS only, nope.

They apply cleanly on 6.4.y and preparing the patches now. I'm not sure I can
run any tests on 6.4.y though except maybe boot test on qemu.

Waiting for compile tests to finish and will post shortly.


Thanks!

--
Qais Yousef