[LTP] [PATCH v1] sched_rr_get_interval01.c: Put test process into absolute root cgroup (0::/)

[Petr Vorel]

Hi all,

> On Sat, Jun 07, 2025 at 02:42:22PM -0400, Wei Gao <wegao@suse.com> wrote:
> > @Michal Koutný  So we should skip test cgroupv2 with CONFIG_RT_GROUP_SCHED=yes, correct? 

> Ideally, no one should run v2 with CONFIG_RT_GROUP_SCHED=y, so this
> would never fail :-p

@Michal thanks for a clarification. It's default n and
Documentation/scheduler/sched-rt-group.rst which mentions CONFIG_RT_GROUP_SCHED
also mentions Documentation/admin-guide/cgroup-v1/cgroups.rst, that should be a
good hint for people changing the defaults :).

Also, there are 3 old mips and sh boards which set CONFIG_RT_GROUP_SCHED=y.
Probably nobody cares much nowadays, but maybe it should be deleted.

> > Like following change?

> But if there are such poor souls, that skip should make the test not
> obstruct the rest of LTP.

@Andrea, you claimed it's merged, but maybe you reply to a wrong thread
because it's not merged.
https://lore.kernel.org/ltp/b15fa0cb-e893-4642-9aa0-05f732b75131@suse.com/

I agree with Cyril to have a custom function in lib/tst_cgroup.c, which would be
called by affected tests.

Kind regards,
Petr

> Thanks,
> Michal