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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 50047C433EF for ; Mon, 27 Jun 2022 16:52:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239708AbiF0QwT (ORCPT ); Mon, 27 Jun 2022 12:52:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47576 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239578AbiF0Qvg (ORCPT ); Mon, 27 Jun 2022 12:51:36 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 6A1D713DFB for ; Mon, 27 Jun 2022 09:51:35 -0700 (PDT) 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 49CC01758; Mon, 27 Jun 2022 09:51:35 -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 5E09E3F792; Mon, 27 Jun 2022 09:51:33 -0700 (PDT) From: Sudeep Holla To: linux-kernel@vger.kernel.org Cc: Sudeep Holla , Greg Kroah-Hartman , Atish Patra , Atish Patra , 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 v5 19/19] arch_topology: Warn that topology for nested clusters is not supported Date: Mon, 27 Jun 2022 17:50:47 +0100 Message-Id: <20220627165047.336669-20-sudeep.holla@arm.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220627165047.336669-1-sudeep.holla@arm.com> References: <20220627165047.336669-1-sudeep.holla@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We don't support the topology for clusters of CPU clusters while the DT and ACPI bindings theoritcally support the same. Just warn about the same so that it is clear to the users of arch_topology that the nested clusters are not yet supported. Link: https://lore.kernel.org/r/20220621192034.3332546-21-sudeep.holla@arm.com Tested-by: Ionela Voinescu Signed-off-by: Sudeep Holla --- drivers/base/arch_topology.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c index 7cbe21b1b295..d7e48e995691 100644 --- a/drivers/base/arch_topology.c +++ b/drivers/base/arch_topology.c @@ -567,6 +567,8 @@ static int __init parse_cluster(struct device_node *cluster, int package_id, if (c) { leaf = false; ret = parse_cluster(c, package_id, i, depth + 1); + if (depth > 0) + pr_warn("Topology for clusters of clusters not yet supported\n"); of_node_put(c); if (ret != 0) return ret; -- 2.36.1