From patchwork Tue Aug 18 17:04:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 247908 Delivered-To: patch@linaro.org Received: by 2002:a54:3b12:0:0:0:0:0 with SMTP id j18csp3285949ect; Tue, 18 Aug 2020 10:07:40 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxqCqs+qTwws6e1nnqGtZ5Y9LBp2TTdQUp1AveDkayc+74qsRQR3oci6zD1zeyJ8o81lQe5 X-Received: by 2002:a05:6402:44e:: with SMTP id p14mr21269683edw.1.1597770460706; Tue, 18 Aug 2020 10:07:40 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1597770460; cv=none; d=google.com; s=arc-20160816; b=vpBtXWU0lcCyVMet1yR82FE1uFw4xtNZzd/dy+3KSMXH9gC79pJdyQEmnOUYRslDeZ nlbCnI5Z2RTP1WbP/RwWULLMuB15Mu7DaP6dkM/KA9EG6Erf1TAPgTF+zW/TS21YC5to W86lw0HgLbxfhGSvkHwISCK/hhCeFqupfWoI3dvj54nu6PlZNDu+Pp+RodUZKulO1jbc gu2Hy/ZqN2lPvk6IkXX/j0M2jJ/4qYX75vrnwbbgO7v0sVRN0B8iQgT2hkggqRI5x8+/ FZzsl1snw6fFnoXQTJqC3bOvCy77Yrbzv084cLGYP2PdZXJEMlzJqRq/yXorAuPSWaGZ /PQw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=G8xrgWR5rYls5kOXa7DaWpW87fT69c2v67WrQ+Qf4nw=; b=JzFacJia32pSwkCbNLvsK2H6Dt/q4SRqX5daHzsWOj1iODtdoZcGmzrqOxqsIUOu1P gVguvhwKuFBjUpBCesKmN0BON/KoMI/L7iO8aipgjMaP3DmF5Um+z8hUSwaTxsHiuuuE N673cwZ09lbThnleWFsQcYNEiDz6IK1wuK+kNTzwLX4LifJ4CY4cKw/Y+iYAqtJME4bV 38USI748wi98fd2xPwFBPlrzG1HqZrciq9JHgEqmVF3F5lmr62XkBu/IM3ykcQu6lgjg R+FM88xpRViXXNx/PlRQpygONv0MAtiB584btwK41E8KO/YMhWnCCor4sB8FVaIEES1+ JOLA== ARC-Authentication-Results: i=1; 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 Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id t15si13441583edy.289.2020.08.18.10.07.40; Tue, 18 Aug 2020 10:07:40 -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 S1728284AbgHRRHj (ORCPT + 7 others); Tue, 18 Aug 2020 13:07:39 -0400 Received: from lhrrgout.huawei.com ([185.176.76.210]:2660 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727773AbgHRRHj (ORCPT ); Tue, 18 Aug 2020 13:07:39 -0400 Received: from lhreml710-chm.china.huawei.com (unknown [172.18.7.106]) by Forcepoint Email with ESMTP id 4A8738797439592A58F3; Tue, 18 Aug 2020 18:07:38 +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_CBC_SHA256) id 15.1.1913.5; Tue, 18 Aug 2020 18:07:38 +0100 From: Jonathan Cameron To: , , , CC: Lorenzo Pieralisi , Bjorn Helgaas , , , Ingo Molnar , Thomas Gleixner , , Dan Williams , Brice Goglin , Sean V Kelley , Jonathan Cameron Subject: [PATCH v8 6/6] docs: mm: numaperf.rst Add brief description for access class 1. Date: Wed, 19 Aug 2020 01:04:17 +0800 Message-ID: <20200818170417.1515975-7-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20200818170417.1515975-1-Jonathan.Cameron@huawei.com> References: <20200818170417.1515975-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.123.41.22] X-ClientProxiedBy: lhreml702-chm.china.huawei.com (10.201.108.51) 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 4d69ef1de830..b89bb85eac75 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 NICs. 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 ==========