* Implementing a control group manager that isn't a persistent daemon
@ 2026-07-12 22:50 Demi Marie Obenour
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From: Demi Marie Obenour @ 2026-07-12 22:50 UTC (permalink / raw)
To: Linux cgroups development; +Cc: Alyssa Ross, Spectrum OS Development
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Hello!
I'm currently implementing a control group manager that isn't a
persistent daemon. Instead, it's a command-line tool. The system
I'm working on uses s6 instead of systemd, and s6 doesn't have native
control group support.
The current plan is to offer a few options:
1. Create a cgroup if it doesn't exist. If it does, wait for it to
be empty. Then execute a program in that cgroup.
2. Create a program in a cgroup, without waiting for the cgroup to
be empty.
2. Kill all programs in a cgroup.
Unfortunately, I'm not able to wait for a cgroup to become empty.
I don't seem to be getting EPOLLPRI or EPOLLERR events. What
is the proper way to get those events? Is there a kernel version
with a bug in this area?
--
Sincerely,
Demi Marie Obenour (she/her/hers)
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