From patchwork Fri Oct 4 11:43:28 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 11174265 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 772A5139A for ; Fri, 4 Oct 2019 11:44:41 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 5531E215EA for ; Fri, 4 Oct 2019 11:44:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="TzYEKnkr" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5531E215EA 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+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.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=xvs9hDQLIm4typ3pdHPIeMpXc5P3KitAiYnbbHO8L2c=; b=TzYEKnkrb4oScu YmAK1WuDF/WrkDrHIeqxIT/oEgBuK0CGBmntarP9XPoTlZk6peqj5xoJifdZ4yEuqo22TVOiduSsL o1q+QSp77iF/LKCz2z0fbcL1qPADNSwQ3hvBuuyPpgECQyd3YEEuNQ3Ssaf+6sMAAz9SqdIWSZQan XPboxr0A0cjWBGdzgHmIsfPoZE21w/5INifx8BxUPJZek+3mkVsnTnj41wJMbxZ24un81LnOylFcz k06iFcN2oYB5n+o0GMW0RLEHKvrMN0RBzujDqon3GLOIeCqzwU2byqkgqiVKmweKlSwvV89PsrDWH mP9uEoBkf/2RQ1iZqE2g==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.2 #3 (Red Hat Linux)) id 1iGM0k-0007Pr-BY; Fri, 04 Oct 2019 11:44:38 +0000 Received: from szxga06-in.huawei.com ([45.249.212.32] helo=huawei.com) by bombadil.infradead.org with esmtps (Exim 4.92.2 #3 (Red Hat Linux)) id 1iGM0V-0007AN-Nh for linux-arm-kernel@lists.infradead.org; Fri, 04 Oct 2019 11:44:25 +0000 Received: from DGGEMS401-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 3AD602401994882FD419; Fri, 4 Oct 2019 19:44:20 +0800 (CST) Received: from lhrphicprd00229.huawei.com (10.123.41.22) by DGGEMS401-HUB.china.huawei.com (10.3.19.201) with Microsoft SMTP Server id 14.3.439.0; Fri, 4 Oct 2019 19:44:12 +0800 From: Jonathan Cameron To: , , , , Subject: [PATCH V5 2/4] arm64: Support Generic Initiator only domains Date: Fri, 4 Oct 2019 19:43:28 +0800 Message-ID: <20191004114330.104746-3-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191004114330.104746-1-Jonathan.Cameron@huawei.com> References: <20191004114330.104746-1-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-20191004_044423_957243_DE037C16 X-CRM114-Status: UNSURE ( 9.99 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [45.249.212.32 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record 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: "Rafael J . Wysocki" , linuxarm@huawei.com, Keith Busch , jglisse@redhat.com, Jonathan Cameron , Dan Williams , Andrew Morton Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org The one thing that currently needs doing from an architecture point of view is associating the GI domain with its nearest memory domain. This allows all the standard NUMA aware code to get a 'reasonable' answer. A clever driver might elect to do load balancing etc if there are multiple host / memory domains nearby, but that's a decision for the driver. Signed-off-by: Jonathan Cameron --- arch/arm64/kernel/smp.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index dc9fe879c279..fd7f6b1cdc84 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -713,6 +713,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus) { int err; unsigned int cpu; + unsigned int node; unsigned int this_cpu; init_cpu_topology(); @@ -751,6 +752,13 @@ void __init smp_prepare_cpus(unsigned int max_cpus) set_cpu_present(cpu, true); numa_store_cpu_info(cpu); } + + /* + * Walk the numa domains and set the node to numa memory reference + * for any that are Generic Initiator Only. + */ + for_each_node_state(node, N_GENERIC_INITIATOR) + set_gi_numa_mem(node, local_memory_node(node)); } void (*__smp_cross_call)(const struct cpumask *, unsigned int);