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SubjectRe: [PATCH v8 0/6] cgroup/cpuset: Add new cpuset partition type & empty effecitve cpus
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On 10/18/21 10:36 AM, Waiman Long wrote:
> v8:
> - Reorganize the patch series and rationalize the features and
> constraints of a partition.
> - Update patch descriptions and documentation accordingly.
>
> v7:
> - Simplify the documentation patch (patch 5) as suggested by Tejun.
> - Fix a typo in patch 2 and improper commit log in patch 3.
>
> v6:
> - Remove duplicated tmpmask from update_prstate() which should fix the
> frame size too large problem reported by kernel test robot.
>
> This patchset makes four enhancements to the cpuset v2 code.
>
> Patch 1: Enable partition with no task to have empty cpuset.cpus.effective.
>
> Patch 2: Refining the features and constraints of a cpuset partition
> clarifying what changes are allowed.
>
> Patch 3: Add a new partition state "isolated" to create a partition
> root without load balancing. This is for handling intermitten workloads
> that have a strict low latency requirement.
>
> Patch 4: Enable the "cpuset.cpus.partition" file to show the reason
> that causes invalid partition like "root invalid (No cpu available
> due to hotplug)".
>
> Patch 5 updates the cgroup-v2.rst file accordingly. Patch 6 adds a new
> cpuset test to test the new cpuset partition code.
>
> Waiman Long (6):
> cgroup/cpuset: Allow no-task partition to have empty
> cpuset.cpus.effective
> cgroup/cpuset: Refining features and constraints of a partition
> cgroup/cpuset: Add a new isolated cpus.partition type
> cgroup/cpuset: Show invalid partition reason string
> cgroup/cpuset: Update description of cpuset.cpus.partition in
> cgroup-v2.rst
> kselftest/cgroup: Add cpuset v2 partition root state test
>
> Documentation/admin-guide/cgroup-v2.rst | 153 ++--
> kernel/cgroup/cpuset.c | 393 +++++++----
> tools/testing/selftests/cgroup/Makefile | 5 +-
> .../selftests/cgroup/test_cpuset_prs.sh | 664 ++++++++++++++++++
> tools/testing/selftests/cgroup/wait_inotify.c | 87 +++
> 5 files changed, 1115 insertions(+), 187 deletions(-)
> create mode 100755 tools/testing/selftests/cgroup/test_cpuset_prs.sh
> create mode 100644 tools/testing/selftests/cgroup/wait_inotify.c

Any feedback on this patch series?

Thanks,
Longman

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