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 299DCC433E2 for ; Mon, 7 Sep 2020 14:08:03 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id BB06C21473 for ; Mon, 7 Sep 2020 14:08:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BB06C21473 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 3DCF06B005C; Mon, 7 Sep 2020 10:08:02 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 38DC06B005D; Mon, 7 Sep 2020 10:08:02 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2A5636B0062; Mon, 7 Sep 2020 10:08:02 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0137.hostedemail.com [216.40.44.137]) by kanga.kvack.org (Postfix) with ESMTP id 147CB6B005C for ; Mon, 7 Sep 2020 10:08:02 -0400 (EDT) Received: from smtpin28.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id CD16E180AD807 for ; Mon, 7 Sep 2020 14:08:01 +0000 (UTC) X-FDA: 77236444362.28.rat18_5b1641e270cc Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin28.hostedemail.com (Postfix) with ESMTP id 9F9166C05 for ; Mon, 7 Sep 2020 14:08:01 +0000 (UTC) X-HE-Tag: rat18_5b1641e270cc X-Filterd-Recvd-Size: 3117 Received: from huawei.com (szxga05-in.huawei.com [45.249.212.191]) by imf20.hostedemail.com (Postfix) with ESMTP for ; Mon, 7 Sep 2020 14:08:00 +0000 (UTC) Received: from DGGEMS410-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 20EE5185D0A4C595AE8E; Mon, 7 Sep 2020 22:07:58 +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, 7 Sep 2020 22:07:51 +0800 From: Jonathan Cameron To: , , , , Lorenzo Pieralisi , , Ingo Molnar CC: Bjorn Helgaas , , Thomas Gleixner , , Dan Williams , Brice Goglin , "Sean V Kelley" , , "Hanjun Guo" , Jonathan Cameron Subject: [PATCH v10 6/6] docs: mm: numaperf.rst Add brief description for access class 1. Date: Mon, 7 Sep 2020 22:03:07 +0800 Message-ID: <20200907140307.571932-7-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20200907140307.571932-1-Jonathan.Cameron@huawei.com> References: <20200907140307.571932-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.123.41.22] X-CFilter-Loop: Reflected X-Rspamd-Queue-Id: 9F9166C05 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam04 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