From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mta0.migadu.com (out-115.mta0.migadu.com [91.218.175.115]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6C6E3445AFA for ; Thu, 20 Aug 2026 12:43:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.115 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787229807; cv=none; b=uFlaun9Wi74ec4znaMDEjg8TDg6JWBmkW02SmjOUBRpoRG+dv2r72J/lEFei7X/iAq5/Ah6nuDaf2x5N9KhFex04aCCd9e1w1lq2OKZF2I7Bp14AKT14kwMHcykWlrbS/H0mmE9SBbkDeis1XFn+pZjryAMO1xRYdltsaNYkgcc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787229807; c=relaxed/simple; bh=pu6refSfYxSkJMyw2ARvUY6sO8y8LnRIQ3GF4cCNz14=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=cpZxED/GDHeQh/uHt4k/jt15aqtVSYUR1OWb63GDLUO3a0SuSoT9szsg5rXXVz4XNftSopKkxDOdnqj2zW63hgMAQsGrMXDKyuD8pDSlHJ4proFCxInbljJJXW/TBFprDuk9+y5BB+2J2MtRS3aRWdJd35RMwHcIdJwpooQzs2I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=QAcNK528; arc=none smtp.client-ip=91.218.175.115 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="QAcNK528" X-Envelope-To: cgroups@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=pu6refSfYxSkJMyw2ARvUY6sO8y8LnRIQ3GF4cCNz14=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1787229803; v=1; x=1787834603; b=QAcNK528VxlQcDkKhlyMaXonG28/2aXERseGGAMS+gdYAWIrbTxqRN4D66fjbA969fp1b1OC CoEWEZRP+XotnBgHe0Gl5pe5EdJq6N1PsMe+nvbvIyzejt2tbafWvmUVocaXbOdhbC8TaSqArOG D1O/p/9sSNC4viUd7U7thgpY= X-Envelope-To: cgroups@vger.kernel.org Received: from zgp.. (223.70.159.239) by smtp.migadu.com with ESMTPS id f9c3cf2986d85fb6; Thu, 20 Aug 2026 12:43:23 +0000 X-Mizu-Trace-ID: f9c3cf2986d85fb6 X-Migadu-Flow: FLOW_OUT From: Guopeng Zhang 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 Subject: [PATCH 15/17] selftests/cgroup: Test shrinking cpuset.cpus in a remote partition Date: Thu, 20 Aug 2026 20:42:00 +0800 Message-ID: <20260820124202.517160-16-guopeng.zhang@linux.dev> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260820124202.517160-1-guopeng.zhang@linux.dev> References: <20260820124202.517160-1-guopeng.zhang@linux.dev> Precedence: bulk X-Mailing-List: cgroups@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Guopeng Zhang 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 --- 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