[LTP] [PATCH v2] sched_football: synchronize with kickoff flag to reduce skew

Cyril Hrubis chrubis@suse.cz
Fri Sep 5 15:45:03 CEST 2025


Hi!
> Thanks, I do manually test and now almost 1/20 times fail.
> And the worth mentioning that this is not a new failure in RHEL kernels.
> Those patches since the barrier have already much improved the test
> result from RHEL side. At least from RHEL RT-kernel I didn't observe
> fail any more.
> 
> So ,as long as the patch works on the SUSE kernel to resolve it's NEW
> problem,
> I think we can merge.

I got another idea meanwhile, what happens if we keep bussy loop for the
defense and add the sched_yield() only to offense and crazy fans? That
should ensure that before the kickoff the defense threads should be
hogging the available CPUs.

-- 
Cyril Hrubis
chrubis@suse.cz


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