From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3EDA7C433DF for ; Tue, 18 Aug 2020 17:08:05 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id E10EC2067C for ; Tue, 18 Aug 2020 17:08:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E10EC2067C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 80BC98D0030; Tue, 18 Aug 2020 13:08:04 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 7BD218D0001; Tue, 18 Aug 2020 13:08:04 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 6D2178D0030; Tue, 18 Aug 2020 13:08:04 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0191.hostedemail.com [216.40.44.191]) by kanga.kvack.org (Postfix) with ESMTP id 568808D0001 for ; Tue, 18 Aug 2020 13:08:04 -0400 (EDT) Received: from smtpin25.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 8DF5E362E for ; Tue, 18 Aug 2020 17:08:03 +0000 (UTC) X-FDA: 77164322046.25.alley20_3210b0e27021 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin25.hostedemail.com (Postfix) with ESMTP id 04EDF1804DF70 for ; Tue, 18 Aug 2020 17:07:41 +0000 (UTC) X-HE-Tag: alley20_3210b0e27021 X-Filterd-Recvd-Size: 3234 Received: from huawei.com (lhrrgout.huawei.com [185.176.76.210]) by imf25.hostedemail.com (Postfix) with ESMTP for ; Tue, 18 Aug 2020 17:07:39 +0000 (UTC) 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 Content-Type: text/plain 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 X-Rspamd-Queue-Id: 04EDF1804DF70 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam03 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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(+) diff --git a/Documentation/admin-guide/mm/numaperf.rst b/Documentation/ad= min-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 performan= ce relative to other linked initiator nodes. Each target within an initiator's access class, though, do not necessarily perform the same as each other. =20 +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. + =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D NUMA Performance =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D @@ -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. =20 +Access class 1, takes the same form, but only includes values for CPU to +memory activity. + =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D NUMA Cache =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D --=20 2.19.1