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,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,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 694CCC433E2 for ; Mon, 7 Sep 2020 14:09:17 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0FF5320714 for ; Mon, 7 Sep 2020 14:09:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="2Zgx4Ozv" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0FF5320714 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-ID:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=NHHvMbnibgWchKccb0Iy5Rplp4B6K6ceCpcjV6sfD3o=; b=2Zgx4Ozv2vrDtB/5wsu4y4swj 9+amtcb3EKTiccyqX3uc97k50qRyePE/DBAcx8diEO9U6zZni57vjb+zTJRZLpTvhy62Hbszm9KM7 Ko0h1YUamqhYTM8ERYr3C1p8mMLQZVd19TccKCfscXHb+7JPzGHjH23vQauyXbjt8pOIygL4DMMYX Llbcv0g1iA8RzCzm4/yJ279ixaiKfNGyI9ssNP7MxI1X2CPXuQO/V+37N7M80TVPnA9oxjAU6Zqol KEYdRQoBiiVgev1a2w+mvepr+f0vi76S3/tQZHBv1ngcmL3Db2+tejq1Q8c/8mTCgKMGD4IPXVoMI wxM8fVVvg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kFHoe-00032Y-LD; Mon, 07 Sep 2020 14:08:16 +0000 Received: from szxga05-in.huawei.com ([45.249.212.191] helo=huawei.com) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kFHob-0002xZ-Vx for linux-arm-kernel@lists.infradead.org; Mon, 07 Sep 2020 14:08:14 +0000 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 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 X-Originating-IP: [10.123.41.22] X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200907_100814_278582_291FCC29 X-CRM114-Status: UNSURE ( 9.37 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-api@vger.kernel.org, Hanjun Guo , linux-kernel@vger.kernel.org, linuxarm@huawei.com, Jonathan Cameron , Brice Goglin , Bjorn Helgaas , Thomas Gleixner , Dan Williams , Sean V Kelley Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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(+) 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 ========== -- 2.19.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel