From: Guopeng Zhang <guopeng.zhang@linux.dev>
To: longman@redhat.com, cgroups@vger.kernel.org
Cc: ridong.chen@linux.dev, tj@kernel.org, hannes@cmpxchg.org,
mkoutny@suse.com, shuah@kernel.org,
linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org,
Guopeng Zhang <zhangguopeng@kylinos.cn>
Subject: [PATCH 15/17] selftests/cgroup: Test shrinking cpuset.cpus in a remote partition
Date: Thu, 20 Aug 2026 20:42:00 +0800 [thread overview]
Message-ID: <20260820124202.517160-16-guopeng.zhang@linux.dev> (raw)
In-Reply-To: <20260820124202.517160-1-guopeng.zhang@linux.dev>
From: Guopeng Zhang <zhangguopeng@kylinos.cn>
Cover remote partition shrink with and without a local isolated child.
Check that removed CPUs return to the top cpuset and that child
invalidation preserves isolated CPU accounting.
Signed-off-by: Guopeng Zhang <zhangguopeng@kylinos.cn>
---
tools/testing/selftests/cgroup/test_cpuset_prs.sh | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/tools/testing/selftests/cgroup/test_cpuset_prs.sh b/tools/testing/selftests/cgroup/test_cpuset_prs.sh
index 7345e89e22b7..ad01016ddc8d 100755
--- a/tools/testing/selftests/cgroup/test_cpuset_prs.sh
+++ b/tools/testing/selftests/cgroup/test_cpuset_prs.sh
@@ -520,6 +520,15 @@ REMOTE_TEST_MATRIX=(
" C1-4:P1 . C1-2:P1 C2-4:P2 . . \
. . . C1-2 . . p1:3-4|c11:1-2|c12:3-4 \
p1:P1|c11:P1|c12:P-2"
+ # Shrinking a remote partition must return removed CPUs to the top
+ # partition even when it has no child partitions.
+ " C1-4:P1 . . . . . \
+ C1-3 . . . . . p1:1-3 p1:P1 ."
+ # A local child invalidated by a remote parent's CPU change must return
+ # isolated accounting to the remote parent or the top partition.
+ " C1-4:P1 . C3-4:P2 . . . \
+ C1-3 . . . . . p1:1-3|c11:3 \
+ p1:P1|c11:P-2 ."
# Cpusets with empty cpuset.cpus should inherit parent's effective_cpus
" C1-4:P1 C5-6 C1-2 . C5 . \
. P1 P1 . . . p1:3-4|p2:5-6|c11:1-2|c12:3-4|c21:5|c22:5-6 \
--
2.43.0
next prev parent reply other threads:[~2026-08-20 12:43 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-20 12:41 [PATCH 00/17] cgroup/cpuset: Fix partition CPU ownership and isolation accounting Guopeng Zhang
2026-08-20 12:41 ` [PATCH 01/17] selftests/cgroup: Drop invalid boot isolation comparison Guopeng Zhang
2026-08-20 12:41 ` [PATCH 02/17] cgroup/cpuset: Preserve boot-isolated CPUs on partition release Guopeng Zhang
2026-08-20 12:41 ` [PATCH 03/17] selftests/cgroup: Test boot-isolated CPU " Guopeng Zhang
2026-08-20 12:41 ` [PATCH 04/17] cgroup/cpuset: Limit type-change accounting to owned CPUs Guopeng Zhang
2026-08-20 12:41 ` [PATCH 05/17] selftests/cgroup: Test isolated CPU accounting on type changes Guopeng Zhang
2026-08-20 12:41 ` [PATCH 06/17] cgroup/cpuset: Validate type changes against owned CPUs Guopeng Zhang
2026-08-20 12:41 ` [PATCH 07/17] selftests/cgroup: Test type-change validation with child-owned CPUs Guopeng Zhang
2026-08-20 12:41 ` [PATCH 08/17] cgroup/cpuset: Release CPUs when a type change is rejected Guopeng Zhang
2026-08-20 12:41 ` [PATCH 09/17] selftests/cgroup: Test rejected partition type changes Guopeng Zhang
2026-08-20 12:41 ` [PATCH 10/17] cgroup/cpuset: Fix isolated accounting on direct child invalidation Guopeng Zhang
2026-08-20 12:41 ` [PATCH 11/17] selftests/cgroup: Test isolation " Guopeng Zhang
2026-08-20 12:41 ` [PATCH 12/17] cgroup/cpuset: Invalidate children outside the new CPU mask Guopeng Zhang
2026-08-20 12:41 ` [PATCH 13/17] selftests/cgroup: Test child invalidation after shrinking cpuset.cpus Guopeng Zhang
2026-08-20 12:41 ` [PATCH 14/17] cgroup/cpuset: Publish cpus_allowed before partition updates Guopeng Zhang
2026-08-20 12:42 ` Guopeng Zhang [this message]
2026-08-20 12:42 ` [PATCH 16/17] cgroup/cpuset: Fix isolated accounting on propagated invalidation Guopeng Zhang
2026-08-20 12:42 ` [PATCH 17/17] selftests/cgroup: Test isolation " Guopeng Zhang
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