[PATCH v2 0/3] cgroup/cpuset: Preserve boot-isolated CPUs on partition release

[Guopeng Zhang <guopeng.zhang@linux.dev>]

From: Guopeng Zhang <zhangguopeng@kylinos.cn>

This series fixes the loss of boot-isolated CPUs when an isolated cpuset
partition is released. It also removes a selftest comparison against a
boot-only sysfs mask which cannot track dynamic cpuset isolation.

---
Changes since v1:
- split the boot-isolation fixes from the original 17-patch series;
- explain why the boot-only sysfs mask cannot validate dynamic cpuset
  isolation;
- add reproducers and observed/expected results to patches 1 and 2;
- no code changes.

Link: https://lore.kernel.org/all/20260820124202.517160-1-guopeng.zhang@linux.dev/

Guopeng Zhang (3):
  selftests/cgroup: Drop invalid boot isolation comparison
  cgroup/cpuset: Preserve boot-isolated CPUs on partition release
  selftests/cgroup: Add test for preserving boot-isolated CPUs

 kernel/cgroup/cpuset.c                        | 39 ++++++++---
 .../selftests/cgroup/test_cpuset_prs.sh       | 64 +++++++++++++++++--
 2 files changed, 87 insertions(+), 16 deletions(-)


base-commit: 6a746cd265aed59107ebdaa9ce039bb832922969
-- 
2.43.0