From: Guopeng Zhang <zhangguopeng@kylinos.cn>

The cpuset interface documentation says cpuset.cpus.isolated is empty
unless an isolated partition exists, omitting CPUs isolated at boot with
isolcpus=domain. Its cpuset.cpus.effective description also assumes CPUs
come from the immediate parent and are normally a subset of
cpuset.cpus, which is not always true for valid non-root partition roots.

Update both descriptions to match the existing behavior.

Changes since v2:
- Update the valid partition root example to show that an offline CPU
  can remain in cpuset.cpus.exclusive.effective while being excluded
  from cpuset.cpus.effective.
- Add the Reviewed-by tag to patch 2.
- Patch 1 is unchanged.

Guopeng Zhang (2):
  docs: cgroup-v2: Describe boot-isolated CPUs in cpuset.cpus.isolated
  docs: cgroup-v2: Describe effective CPUs of partition roots

 Documentation/admin-guide/cgroup-v2.rst | 62 ++++++++++++++++++++-----
 1 file changed, 51 insertions(+), 11 deletions(-)

-- 
2.43.0

> Guopeng Zhang (2):
>   docs: cgroup-v2: Describe boot-isolated CPUs in cpuset.cpus.isolated
>   docs: cgroup-v2: Describe effective CPUs of partition roots

Applied 1-2 to cgroup/for-7.4.

Thanks.

--
tejun

On 9/22/26 5:20 AM, Guopeng Zhang wrote:
> From: Guopeng Zhang <zhangguopeng@kylinos.cn>
>
> The cpuset interface documentation says cpuset.cpus.isolated is empty
> unless an isolated partition exists, omitting CPUs isolated at boot with
> isolcpus=domain. Its cpuset.cpus.effective description also assumes CPUs
> come from the immediate parent and are normally a subset of
> cpuset.cpus, which is not always true for valid non-root partition roots.
>
> Update both descriptions to match the existing behavior.
>
> Changes since v2:
> - Update the valid partition root example to show that an offline CPU
>    can remain in cpuset.cpus.exclusive.effective while being excluded
>    from cpuset.cpus.effective.
> - Add the Reviewed-by tag to patch 2.
> - Patch 1 is unchanged.
>
> Guopeng Zhang (2):
>    docs: cgroup-v2: Describe boot-isolated CPUs in cpuset.cpus.isolated
>    docs: cgroup-v2: Describe effective CPUs of partition roots
>
>   Documentation/admin-guide/cgroup-v2.rst | 62 ++++++++++++++++++++-----
>   1 file changed, 51 insertions(+), 11 deletions(-)

For the patch series,

Reviewed-by: Waiman Long <longman@redhat.com>