Re: PREEMPT_RT testing on kernelci

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Hi Sebastian,


---- On Tue, 11 Feb 2025 12:20:18 -0300 Sebastian Andrzej Siewior  wrote ---

 > On 2025-02-11 08:33:56 [-0300], Gustavo Padovan wrote: 
 > > Hi Sebastian, 
 > Hi Gustavo, 
 >  
 > > Thank you for your email. We are happy that KernelCI is helping you with tests. 
 > ;) 
 > >  > Since PREEMPT_RT is now available upstream, would it work to compile and 
 > >  > enable some of its tests for the supported architectures on Linus' tree 
 > >  > and maybe the -next tree? I don't think that happens at the moment, I 
 > >  > saw only a few stable-rt trees. 
 > > 
 > > https://github.com/kernelci/kernelci-pipeline/pull/1010 
 > > 
 > > This will get it enabled for mainline and next. Allow us a few days for processing and 
 > > deploying this in production. 
 >  
 > Sure. Just poke if you have something to inspect or look at because of 
 > $reason. 
 >  
 > The architectures, that support RT are what you see in 
 > | git grep ARCH_SUPPORTS_RT arch/ 
 >  
 > so this does not include arm at current stage for instance. So in 
 > general, if you can't select CONFIG_PREEMPT_RT you can skip the 
 > config/ build/ test. 
 >  
 > RiscV on the other hand is supported.

Right. Let me look at how we can limit this to x86 only.
Unfortunatelly, we don't have much RISC-V hw support in KernelCI yet.

 >  
 > > Beyond that, we would love any feedback you have to us. A lot of the infra 
 > > we have today is new, so there are still rough edges to work on. 
 >  
 > Sure. How do I see easily what is tested/ done? I could maybe wait a few 
 > days and check the dashboard. The link from above showed timerlat has 
 > been but I didn't manage to figure what has been. I guess there is a 
 > script somewhere handling the logic. 

That is one the current limitations in the dashboard. The CI systems are not sending
a clear signal yet that they completed all tests they wanted to run. They just submit
test result individually as they get finished. 

Imo, it is a priority to fix this as it is second time this week I get this feedback.

Best,

- Gus




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