From patchwork Mon Jul 4 10:16:02 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sudeep Holla X-Patchwork-Id: 12905053 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 400A0C43334 for ; Mon, 4 Jul 2022 10:44:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=xdfkELbl++MXtiI5jcjxInQlZGBCChgKAXfEnZoZDIk=; b=l6OjAETW1QTorJ UYWgkZHUOVyfqYw3IZzs7rjv50HW5ugY6vqqEyP97t4R452F2Qjyayz6nLZmJn2AwZTLhYaJdu8Hk gZw8/+qpyV/hsimViPz8FQtgIvhRptM9zxFc5vl51XWt59kBkhbttz7pomQu31p2kgF8jdCCiY0qq 13jkpzb2t93C9TocCgLPiQNwWERSk34MKdZJ8oRbkMOvxIMUIU5GmA/iyfKRvZMhm2DO+sfpaHbXx g63QyHCgzvEHDnKKnoAPoU2nQaBKPVXlrh2wFBPZga/+PmsmROJkwg3Hpdu76ZdgTBEQT4zBzBMWW YoDZnD6yxamWr37+v6cQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o8JZ7-007A8M-3K; Mon, 04 Jul 2022 10:44:29 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o8J8P-006rxV-KN; Mon, 04 Jul 2022 10:16:56 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 1B29CD6E; Mon, 4 Jul 2022 03:16:53 -0700 (PDT) Received: from usa.arm.com (e103737-lin.cambridge.arm.com [10.1.197.49]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 0918B3F792; Mon, 4 Jul 2022 03:16:50 -0700 (PDT) From: Sudeep Holla To: linux-kernel@vger.kernel.org, Greg Kroah-Hartman Cc: Sudeep Holla , conor.dooley@microchip.com, valentina.fernandezalanis@microchip.com, Vincent Guittot , Dietmar Eggemann , Qing Wang , Rob Herring , "Rafael J . Wysocki" , Ionela Voinescu , Pierre Gondois , linux-arm-kernel@lists.infradead.org, linux-riscv@lists.infradead.org Subject: [PATCH v6 18/21] arch_topology: Set cluster identifier in each core/thread from /cpu-map Date: Mon, 4 Jul 2022 11:16:02 +0100 Message-Id: <20220704101605.1318280-19-sudeep.holla@arm.com> X-Mailer: git-send-email 2.37.0 In-Reply-To: <20220704101605.1318280-1-sudeep.holla@arm.com> References: <20220704101605.1318280-1-sudeep.holla@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220704_031653_916091_FA4EC19B X-CRM114-Status: GOOD ( 12.65 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Let us set the cluster identifier as parsed from the device tree cluster nodes within /cpu-map. We don't support nesting of clusters yet as there are no real hardware to support clusters of clusters. Tested-by: Ionela Voinescu Reviewed-by: Ionela Voinescu Signed-off-by: Sudeep Holla --- drivers/base/arch_topology.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c index 591c1f8e15e2..217a91fc1f59 100644 --- a/drivers/base/arch_topology.c +++ b/drivers/base/arch_topology.c @@ -497,7 +497,7 @@ static int __init get_cpu_for_node(struct device_node *node) } static int __init parse_core(struct device_node *core, int package_id, - int core_id) + int cluster_id, int core_id) { char name[20]; bool leaf = true; @@ -513,6 +513,7 @@ static int __init parse_core(struct device_node *core, int package_id, cpu = get_cpu_for_node(t); if (cpu >= 0) { cpu_topology[cpu].package_id = package_id; + cpu_topology[cpu].cluster_id = cluster_id; cpu_topology[cpu].core_id = core_id; cpu_topology[cpu].thread_id = i; } else if (cpu != -ENODEV) { @@ -534,6 +535,7 @@ static int __init parse_core(struct device_node *core, int package_id, } cpu_topology[cpu].package_id = package_id; + cpu_topology[cpu].cluster_id = cluster_id; cpu_topology[cpu].core_id = core_id; } else if (leaf && cpu != -ENODEV) { pr_err("%pOF: Can't get CPU for leaf core\n", core); @@ -543,7 +545,8 @@ static int __init parse_core(struct device_node *core, int package_id, return 0; } -static int __init parse_cluster(struct device_node *cluster, int depth) +static int __init +parse_cluster(struct device_node *cluster, int cluster_id, int depth) { char name[20]; bool leaf = true; @@ -563,7 +566,7 @@ static int __init parse_cluster(struct device_node *cluster, int depth) c = of_get_child_by_name(cluster, name); if (c) { leaf = false; - ret = parse_cluster(c, depth + 1); + ret = parse_cluster(c, i, depth + 1); of_node_put(c); if (ret != 0) return ret; @@ -587,7 +590,7 @@ static int __init parse_cluster(struct device_node *cluster, int depth) } if (leaf) { - ret = parse_core(c, 0, core_id++); + ret = parse_core(c, 0, cluster_id, core_id++); } else { pr_err("%pOF: Non-leaf cluster with core %s\n", cluster, name); @@ -627,7 +630,7 @@ static int __init parse_dt_topology(void) if (!map) goto out; - ret = parse_cluster(map, 0); + ret = parse_cluster(map, -1, 0); if (ret != 0) goto out_map;