Re: [PATCH v4 8/9] cgroup/cpuset: Documentation update for partition

From: Tejun Heo
Date: Mon Jul 10 2023 - 17:30:18 EST


Hello,

On Tue, Jun 27, 2023 at 10:35:07AM -0400, Waiman Long wrote:
...
> + There are two types of partitions - local and remote. A local
> + partition is one whose parent cgroup is also a valid partition
> + root. A remote partition is one whose parent cgroup is not a
> + valid partition root itself. Writing to "cpuset.cpus.exclusive"
> + is not mandatory for the creation of a local partition as its
> + "cpuset.cpus.exclusive" file will be filled in automatically if
> + it is not set. The automaticaly set value will be based on its
> + "cpuset.cpus" value. Writing the proper "cpuset.cpus.exclusive"
> + values down the cgroup hierarchy is mandatory for the creation
> + of a remote partition.

Wouldn't a partition root's cpus.exclusive always contain all of the CPUs in
its cpus? Would it make sense for cpus.exclusive to be different from .cpus?

Thanks.

--
tejun