From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mta0.migadu.com (out-107.mta0.migadu.com [91.218.175.107]) (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 604444457BE for ; Thu, 20 Aug 2026 12:43:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.107 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787229797; cv=none; b=nnduUqbmEmdTMzkLwIrSyU/oDz+BBs0sZ75VFScN8txv/cQBF76SBwVcFkYtNsIimAEUyBXJgaWEwfXSVaKuQUj2yo/O8zURz95RyEfWgP7k2Pn2thLCDShGCNQT/9y7YO4J6dbxETK527qUxy2wnYaw+gp3brrV5CEh1m7tQgI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787229797; c=relaxed/simple; bh=4Z9moWx34vFyk0X2XPUJ28g4vrAgCQXsNoQyMW+kKNQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=H1N85tIumZw4iDN3AFusEQ+TKIcVdeKjWKGegkTersU3A+whJmCOClY+8TH8ucV50F7JJO7vLFVeCzI63fQ40kw92jl2xflYBT+YFrOoIb74XhCijljEvZAwN3WAjmcUcuBmG85CsZmdgO0aR5pLf2xlHSdK9soGNzvtaF5DCB4= 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=tDj1Eu8q; arc=none smtp.client-ip=91.218.175.107 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="tDj1Eu8q" X-Envelope-To: linux-kernel@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=4Z9moWx34vFyk0X2XPUJ28g4vrAgCQXsNoQyMW+kKNQ=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1787229794; v=1; x=1787834594; b=tDj1Eu8qYLFLH/K5hi8oD7Lb7UaqCby8NwOqvguVJ5ledEvT6G3hnEEWG0G8UunnupbAjGlU V2Ka1dBjLYGKGVWxzVfMwG4ORYd4DuQ3FzQURyQLyHGpl/qdeGNS1aTt/BZLoAcAFCgsKkG1nCC Jj+KFNI04MyYG3LaCLe6RapA= X-Envelope-To: linux-kernel@vger.kernel.org Received: from zgp.. (223.70.159.239) by smtp.migadu.com with ESMTPS id e1761e5fbda85615; Thu, 20 Aug 2026 12:43:14 +0000 X-Mizu-Trace-ID: e1761e5fbda85615 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 13/17] selftests/cgroup: Test child invalidation after shrinking cpuset.cpus Date: Thu, 20 Aug 2026 20:41:58 +0800 Message-ID: <20260820124202.517160-14-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: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Guopeng Zhang Shrink a parent CPU mask in root/root, root/isolated and isolated/root configurations. Check that the child becomes invalid and that effective and isolated CPU masks reflect the new ownership. Signed-off-by: Guopeng Zhang --- tools/testing/selftests/cgroup/test_cpuset_prs.sh | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/tools/testing/selftests/cgroup/test_cpuset_prs.sh b/tools/testing/selftests/cgroup/test_cpuset_prs.sh index fb11a3ab0f35..7345e89e22b7 100755 --- a/tools/testing/selftests/cgroup/test_cpuset_prs.sh +++ b/tools/testing/selftests/cgroup/test_cpuset_prs.sh @@ -331,6 +331,11 @@ TEST_MATRIX=( " C0-3:X1-3:P2 C1-3:X2-3:P2 C2-3:X3:P2 \ . . C4:X . . 0 A1:1-3|A2:1-3|A3:2-3|XA2:|XA3: A1:P2|A2:P-2|A3:P-2 1-3" + # A child outside its parent's new CPU mask becomes invalid + " C0-3:P1 C2-3:P1 . . C0-2 . . . 0 A1:0-2|A2:2 A1:P1|A2:P-1" + " C0-3:P1 C2-3:P2 . . C0-2 . . . 0 A1:0-2|A2:2 A1:P1|A2:P-2 ." + " C0-3:P2 C2-3:P1 . . C0-2 . . . 0 A1:0-2|A2:2 A1:P2|A2:P-1 0-2" + # Direct invalidation returns child CPUs to the parent or its owner " C1-4:P2 C3-4:P1 . . T:O1=0:O2=0:O4=0 . . . \ 0 A1:3|A2:3 A1:P2|A2:P-1 1-4" -- 2.43.0