Re: [SCHED] any modern replacement for RT_RUNTIME_GREED in the mainline kernel?

[Christian Loehle]

On 12/6/24 18:12, Chris Friesen wrote:
> Hi all,
> 
> Some time back (https://lore.kernel.org/lkml/fa5b1b55d8934c6a0e02e04a7ad6afdf4012c2e0.1478506194.git.bristot@xxxxxxxxxx/) a patch was proposed that would allow high-CPU usage RT tasks to use 100% of the CPU as long as there were no non-RT tasks that wanted to run, but if a non-RT task did want to run the RT-throttling would kick in to prevent starvation and deadlocks.
> 
> It was rejected for philosophical reasons, with a mention of a hypothetical deadline server being the "proper" solution.
> 
> Has anything been done in this area in the years since then?

There has!
The 'hypothetical deadline server' was implemented and is part
of 6.12
https://lore.kernel.org/lkml/cover.1716811043.git.bristot@xxxxxxxxxx/