Re: [RFC PATCH 0/9] Add kernel cmdline option for rt_group_sched

[Michal Koutný]

On Tue, Jan 07, 2025 at 08:41:06PM +0100, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
> We all hate this thing and want it to go away. So not being able to use
> it is a pro from where I'm at.

I understand and to some extent am not a fan of it neither (we had
disabled it in SUSE quite some time ago). I'd consider the remaining
existing users legacy.

> Sadly the replacement isn't there yet either, which makes it all really
> difficult.

Exactly. Thus the runtime switch is meant as a bridge for general
purpose distros where a kernel is shipped pre-configured (i.e. one
config where the default is non-grouped not to hinder the majority use
cases).

Considering the legacy usecases on distribution kernels do you oppose
the chosen approach? I can work on changes if you have comments on the
implementation itself.

Thanks,
Michal

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