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[23.128.96.18]) by mx.google.com with ESMTP id w10si10087084ejv.383.2020.07.13.09.00.35; Mon, 13 Jul 2020 09:00:36 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-acpi-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729782AbgGMQAf (ORCPT + 7 others); Mon, 13 Jul 2020 12:00:35 -0400 Received: from lhrrgout.huawei.com ([185.176.76.210]:2469 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729700AbgGMQAf (ORCPT ); Mon, 13 Jul 2020 12:00:35 -0400 Received: from lhreml710-chm.china.huawei.com (unknown [172.18.7.108]) by Forcepoint Email with ESMTP id 360788AD8E1E872DBE5E; Mon, 13 Jul 2020 17:00:34 +0100 (IST) Received: from lhrphicprd00229.huawei.com (10.123.41.22) by lhreml710-chm.china.huawei.com (10.201.108.61) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1913.5; Mon, 13 Jul 2020 17:00:34 +0100 From: Jonathan Cameron To: , , , CC: Lorenzo Pieralisi , Bjorn Helgaas , , , Ingo Molnar , Thomas Gleixner , , Dan Williams , Brice Goglin , Jonathan Cameron Subject: [PATCH v7 6/6] docs: mm: numaperf.rst Add brief description for access class 1. Date: Mon, 13 Jul 2020 23:56:00 +0800 Message-ID: <20200713155600.2272743-7-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20200713155600.2272743-1-Jonathan.Cameron@huawei.com> References: <20200713155600.2272743-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.123.41.22] X-ClientProxiedBy: lhreml745-chm.china.huawei.com (10.201.108.195) To lhreml710-chm.china.huawei.com (10.201.108.61) X-CFilter-Loop: Reflected Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org Try to make minimal changes to the document which already describes access class 0 in a generic fashion (including IO initiatiors that are not CPUs). Signed-off-by: Jonathan Cameron --- Documentation/admin-guide/mm/numaperf.rst | 8 ++++++++ 1 file changed, 8 insertions(+) -- 2.19.1 diff --git a/Documentation/admin-guide/mm/numaperf.rst b/Documentation/admin-guide/mm/numaperf.rst index a80c3c37226e..a9b1a30f75af 100644 --- a/Documentation/admin-guide/mm/numaperf.rst +++ b/Documentation/admin-guide/mm/numaperf.rst @@ -56,6 +56,11 @@ nodes' access characteristics share the same performance relative to other linked initiator nodes. Each target within an initiator's access class, though, do not necessarily perform the same as each other. +The access class "1" is used to allow differentiation between initiators +that are CPUs and hence suitable for generic task scheduling, and +IO initiators such as GPUs and CPUs. Unlike access class 0, only +nodes containing CPUs are considered. + ================ NUMA Performance ================ @@ -88,6 +93,9 @@ The latency attributes are provided in nanoseconds. The values reported here correspond to the rated latency and bandwidth for the platform. +Access class 1, takes the same form, but only includes values for CPU to +memory activity. + ========== NUMA Cache ==========