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 82A30C2D0A8 for ; Mon, 28 Sep 2020 12:57:17 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2E896206D9 for ; Mon, 28 Sep 2020 12:57:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2E896206D9 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 A3A836B0071; Mon, 28 Sep 2020 08:57:16 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 9E9D66B0072; Mon, 28 Sep 2020 08:57:16 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 8D9566B0073; Mon, 28 Sep 2020 08:57:16 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0108.hostedemail.com [216.40.44.108]) by kanga.kvack.org (Postfix) with ESMTP id 788B76B0071 for ; Mon, 28 Sep 2020 08:57:16 -0400 (EDT) Received: from smtpin19.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 422D1824999B for ; Mon, 28 Sep 2020 12:57:16 +0000 (UTC) X-FDA: 77312470872.19.boy71_480a41f27181 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin19.hostedemail.com (Postfix) with ESMTP id 116631ACEA2 for ; Mon, 28 Sep 2020 12:57:16 +0000 (UTC) X-HE-Tag: boy71_480a41f27181 X-Filterd-Recvd-Size: 3171 Received: from huawei.com (szxga05-in.huawei.com [45.249.212.191]) by imf33.hostedemail.com (Postfix) with ESMTP for ; Mon, 28 Sep 2020 12:57:15 +0000 (UTC) Received: from DGGEMS410-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id A282C398555205D45582; Mon, 28 Sep 2020 20:57:12 +0800 (CST) Received: from lhrphicprd00229.huawei.com (10.123.41.22) by DGGEMS410-HUB.china.huawei.com (10.3.19.210) with Microsoft SMTP Server id 14.3.487.0; Mon, 28 Sep 2020 20:57:06 +0800 From: Jonathan Cameron To: , , , , Lorenzo Pieralisi , , Ingo Molnar CC: Bjorn Helgaas , , Thomas Gleixner , , Dan Williams , Brice Goglin , "Sean V Kelley" , , "Borislav Petkov" , Hanjun Guo , Jonathan Cameron Subject: [PATCH v11 6/6] docs: mm: numaperf.rst Add brief description for access class 1. Date: Mon, 28 Sep 2020 20:52:35 +0800 Message-ID: <20200928125235.446188-7-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20200928125235.446188-1-Jonathan.Cameron@huawei.com> References: <20200928125235.446188-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.123.41.22] X-CFilter-Loop: Reflected 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 --- v11: No change. 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