From: Guopeng Zhang <guopeng.zhang@linux.dev>
To: Waiman Long <longman@redhat.com>,
	Tejun Heo <tj@kernel.org>,
	Ridong Chen <ridong.chen@linux.dev>
Cc: Johannes Weiner <hannes@cmpxchg.org>,
	Michal Koutny <mkoutny@suse.com>,
	Shuah Khan <shuah@kernel.org>,
	cgroups@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	linux-kselftest@vger.kernel.org,
	Guopeng Zhang <zhangguopeng@kylinos.cn>
Subject: [PATCH v2 0/3] cgroup/cpuset: Preserve boot-isolated CPUs on partition release
Date: Mon, 24 Aug 2026 10:01:37 +0800
Message-ID: <20260824020140.21130-1-guopeng.zhang@linux.dev>
Precedence: bulk
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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