From nobody Wed Dec 17 15:35:13 2025 Received: from sender-of-o51.zoho.eu (sender-of-o51.zoho.eu [136.143.169.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B99BA73530 for ; Tue, 7 May 2024 12:16:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.169.51 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715084183; cv=pass; b=rPjUreElMk1bZjax+IWuNzrJs+/6TYDFkq8ZAPrn+Hxur+OuHxBFcdDyMk0Kc6dsf3+ft+85igGZSioacmdA+OjnDyP3YYcgwjn5WNSoJKhyScfmM46+Fw+VPGz4dzAG9pnv6aj8MX9JJcg7FGGwSKCRs6Q+o9Fa8Hb7ibMBN1M= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715084183; c=relaxed/simple; bh=UNytWRjy0n4ufLE4F4bgxm6zk7gEYUpI72DLf8Lh5nI=; h=From:To:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=u98cPtB4tuv5RLYwwvWxjt7pBPkKKXmFZy0wy5NkCaHg0md/RylY7xSGxrxNjg37fIZST1d5odXO/sAfRsCX+oXbKDsFtLpJyeGdvnfw7oLpV9YYZvaBg6MrOlPxp3S70m1J7Dluu25t3/V+PdarWuH+6swnDuE36q2i+uQaC/k= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=bursov.com; spf=pass smtp.mailfrom=bursov.com; dkim=pass (1024-bit key) header.d=bursov.com header.i=vitaly@bursov.com header.b=DlBDuFVN; arc=pass smtp.client-ip=136.143.169.51 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=bursov.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bursov.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=bursov.com header.i=vitaly@bursov.com header.b="DlBDuFVN" ARC-Seal: i=1; a=rsa-sha256; t=1715084147; cv=none; d=zohomail.eu; s=zohoarc; b=eDhgaghwNO9TkR+6P3sk9209X/Av29QJ+dZ08tiqdNuNI4cO/NbU+FZ9qILWIAFcFELF5KDRIYTUUtCZAZG3UDVhnCloVz/Y/oSkef/idXRnc+HK5hWWhw3fRH4SsM3YvBsIFDLJpWrWNcfDExox9rjD+IrYbev0Y608pwSn3X4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.eu; s=zohoarc; t=1715084147; h=Content-Transfer-Encoding:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To:Cc; bh=ztyWG1tL5SLCHcSqhDRsGp0b5KZvYGYaxjeAuQmObZI=; b=C2WDLSV4C3vw7yohjhzOuQmkQE/AXQFqX44q2lX1yhdS4k6w2xy/LjqKbYEaRn02DCgi1h75cWqiOrLmVO9QKIzbBIxBZX9fN6Gs8AroY6L/3wdYQkg5DybRn5TzIl2yGCuUmUDEnPWS01lIZkvg7FdZQNnG+C5Tb4If36ypG+Q= ARC-Authentication-Results: i=1; mx.zohomail.eu; dkim=pass header.i=bursov.com; spf=pass smtp.mailfrom=vitaly@bursov.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1715084147; s=zoho; d=bursov.com; i=vitaly@bursov.com; h=From:From:To:To:Subject:Subject:Date:Date:Message-Id:Message-Id:In-Reply-To:References:MIME-Version:Content-Transfer-Encoding:Reply-To:Cc; bh=ztyWG1tL5SLCHcSqhDRsGp0b5KZvYGYaxjeAuQmObZI=; b=DlBDuFVNVCo7Y0r8HV6HNTPJ3bCx3tbX3/guZf9EpcjlakXuGYdSZsJajtJDUx1c u6SQyfkwIyqnlQaemwep7bVHUhVVFei43+CBJKAR6whOeHW/vqiiXvJho5YDDQ7qSdw LG3cX7e/ehTLCQ9TxD1cT3Ld8+hyRCJNVlrBQa8A= Received: by mx.zoho.eu with SMTPS id 1715084145078400.64154813110486; Tue, 7 May 2024 14:15:45 +0200 (CEST) From: Vitalii Bursov To: Ingo Molnar , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Daniel Bristot de Oliveira , Valentin Schneider , linux-kernel@vger.kernel.org, Vitalii Bursov Subject: [PATCH v5 3/3] docs: cgroup-v1: clarify that domain levels are system-specific Date: Tue, 7 May 2024 15:15:33 +0300 Message-Id: <986e31abb79644e74df0b80adc829eb71a1e4551.1715083479.git.vitaly@bursov.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Content-Type: text/plain; charset="utf-8" Add a clarification that domain levels are system-specific and where to check for system details. Signed-off-by: Vitalii Bursov Acked-by: Vincent Guittot Reviewed-by: Valentin Schneider --- Documentation/admin-guide/cgroup-v1/cpusets.rst | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/Documentation/admin-guide/cgroup-v1/cpusets.rst b/Documentatio= n/admin-guide/cgroup-v1/cpusets.rst index 7d3415eea05d..f401af5e2f09 100644 --- a/Documentation/admin-guide/cgroup-v1/cpusets.rst +++ b/Documentation/admin-guide/cgroup-v1/cpusets.rst @@ -568,7 +568,7 @@ on the next tick. For some applications in special sit= uation, waiting =20 The 'cpuset.sched_relax_domain_level' file allows you to request changing this searching range as you like. This file takes int value which -indicates size of searching range in levels ideally as follows, +indicates size of searching range in levels approximately as follows, otherwise initial value -1 that indicates the cpuset has no request. =20 =3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D @@ -581,6 +581,11 @@ otherwise initial value -1 that indicates the cpuset h= as no request. 5 search system wide [on NUMA system] =3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =20 +Not all levels can be present and values can change depending on the +system architecture and kernel configuration. Check +/sys/kernel/debug/sched/domains/cpu*/domain*/ for system-specific +details. + The system default is architecture dependent. The system default can be changed using the relax_domain_level=3D boot parameter. =20 --=20 2.20.1