[PATCH-next v3 00/11] cgroup/cpuset: Miscellaneous bug fixes & cleanup

[Waiman Long]

 v3:
  - Update patch 1 to further encapsulate the code to release isolated
    CPUs into a new isolated_cpus_release() helper to replace
    furthest_isolated_ancestor(). Other than adding a remote partition
    break, patch 1 should be functionally similar to the one in v2.
  - Add more comment and some minor adjustment into patch 2 to make
    the exclusivity rule apply only to invalid partition with empty
    exclusive_cpus.
  - Add a new fix patch "cgroup/cpuset: Release invalid isolated CPUs
    with a shrunk root partition parent" to handle isolated CPUs release
    in update_parent_effective_cpumask().

 v2:
   - https://lore.kernel.org/lkml/20261023200036.60560-1-longman@xxxxxxxxxx
   - Update patch 2 to resolve problem reported by sashiko and Guopeng.
   - Add 2 more fix patches to resolve problem found by inspection and
     sashiko.
   - Add 2 more cleanup patches suggested by Ridong Chen.

This patch series incorporates 9 fix patches for problems reported
by sashiko, Guopenp Zhang and by inspection. The last 2 patches are
cleanup patches suggested by Ridong Chen.

Waiman Long (11):
  cgroup/cpuset: Find furthest isolated ancestor for invalidated
    isolated partition
  cgroup/cpuset: Properly compute effective xcpus in
    update_parent_effective_cpumask()
  cgroup/cpuset: Fix incorrect effective_cpus bug in
    update_cpumasks_hier()
  cgroup/cpuset: Minor fixes to prstate_housekeeping_conflict()
  selftests/cgroup: Check for a single range nohz_full CPUs before
    running test matrix
  cgroup/cpuset: Prevent recursive call of remote_cpus_update() via
    update_cpumasks_hier()
  cgroup/cpuset: Make sure compute_partition_effective_cpumask() is only
    called for valid partition
  cgroup/cpuset: Release invalid isolated CPUs in
    compute_partition_effective_cpumask()
  cgroup/cpuset: Release invalid isolated CPUs with a shrunk root
    partition parent
  cgroup/cpuset: Relocate compute_*effective_cpumask() and
    compute_effective_nodemask()
  cgroup/cpuset: Integrate compute_partition_effective_cpumask() into
    compute_effective_cpumask()

 kernel/cgroup/cpuset-internal.h               |   5 +
 kernel/cgroup/cpuset.c                        | 505 +++++++++---------
 .../selftests/cgroup/test_cpuset_prs.sh       |  33 +-
 3 files changed, 298 insertions(+), 245 deletions(-)

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2.56.0