From patchwork Fri May 14 09:53:36 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ionela Voinescu X-Patchwork-Id: 12257309 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=-12.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 5845EC433ED for ; Fri, 14 May 2021 09:56:21 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 BFB4E61059 for ; Fri, 14 May 2021 09:56:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BFB4E61059 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.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=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version: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:In-Reply-To:References:List-Owner; bh=qd4cdF7KaqxsjkKXzt0rNZT0vmQ5wLu2YgpRayXJn24=; b=ZdIhhRpHLTarFnQa5C4UkRdLD/ 6i4l7N+kchaOOiZz4/Ajf4YuzpL2KRAkeF9yLRGVwGDRMvVw1qSBNDxkyXIiFBn1QAfwbV/kh6Vkt o5qDN6G56O9USXIV21cGTwI6eSxpD9gltWSg0x4ltusCekE3uMbSVPet3Qnr3PZv1Z+WSVyeGH8kI jgjHoroE+2uVGQVtJ7INioiyLvPMLA5CPYdervgJoPxoQjF+QYqGNP/BVhRybSqAPHePQ3cyXiq8x qNso1J6sg9tlrhYDNmhcW1ZvthVlDu7EAmeWz6XVI3Ul2g/tw6KuedzuCtzZA+gxiEzQttFm49OEE p/hcCrfA==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lhUWX-007hEZ-F4; Fri, 14 May 2021 09:54:25 +0000 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lhUWV-007hEI-76 for linux-arm-kernel@desiato.infradead.org; Fri, 14 May 2021 09:54:23 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:In-Reply-To:References; bh=oIhad6T16EB5Eu+hxbpOF/xhdkWOYrcL2NuocSAi3hQ=; b=XHQMdsXAKXF7o8khhHoz7kPg9N vWqxEZSQ5fVBKU3Y+M5ECFYhq1Z0n1HNjSZ5fNqL8jsvNuRkxKYlMv1cc/X5DONvmDAiUywcfglas CYQkiP4n5GXyCi6VinSuBclGVGxDnioI/HCDJIVkGSUrEJoVLCjnY7T/5pulLAdzLVD97Jur++K8D FLjjnMflxr3A3K77yN8IlCSGrH1gFpsL8g+CTxtnSLyTOfNNcF/UK1fEjSWyXht368fx+VbCJXoj5 jhi8egpo/98UTPKRo3fb+ekmtu8g02CGzRNyTssFyChsdZ+i6ZPqzcrAQUv1xy4QWUsZ5s1tXmYD1 2Jlz9AJA==; Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lhUWS-00BsQX-EB for linux-arm-kernel@lists.infradead.org; Fri, 14 May 2021 09:54:21 +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 F0CD5169E; Fri, 14 May 2021 02:54:15 -0700 (PDT) Received: from e108754-lin.cambridge.arm.com (unknown [10.1.195.40]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 832AF3F719; Fri, 14 May 2021 02:54:14 -0700 (PDT) From: Ionela Voinescu To: Sudeep Holla , "Rafael J . Wysocki" , Thomas Gleixner , Ingo Molnar , Giovanni Gherdovich , Catalin Marinas , Will Deacon , Valentin Schneider Cc: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH 0/3] arch_topology, ACPI: populate cpu capacity from CPPC Date: Fri, 14 May 2021 10:53:36 +0100 Message-Id: <20210514095339.12979-1-ionela.voinescu@arm.com> X-Mailer: git-send-email 2.29.2.dirty MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210514_025420_546619_42C09F27 X-CRM114-Status: GOOD ( 10.49 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi all, These are a few trivial patches to populate cpu capacity information using performance information from ACPI's CPPC. I've tied this functionality to the existing function init_freq_invariance_cppc() called in acpi_cppc_processor_probe(). This function is renamed to a more generic arch_init_invariance_cppc(). The patches have been build tested on x86 and more thoroughly tested on Juno R2 (arm64), which uses the new functionality, with the following results: root@ubuntu:~# dmesg | grep cpu_capacity [ 2.157494] init_cpu_capacity_cppc: CPU0 cpu_capacity=38300 (raw). [ 2.163699] init_cpu_capacity_cppc: CPU1 cpu_capacity=38300 (raw). [ 2.169899] init_cpu_capacity_cppc: CPU2 cpu_capacity=38300 (raw). [ 2.176098] init_cpu_capacity_cppc: CPU3 cpu_capacity=38300 (raw). [ 2.182296] init_cpu_capacity_cppc: CPU4 cpu_capacity=102400 (raw). [ 2.188581] init_cpu_capacity_cppc: CPU5 cpu_capacity=102400 (raw). [ 2.194867] cpu_capacity: capacity_scale=102400 [ 2.199409] cpu_capacity: CPU0 cpu_capacity=383 [ 2.203952] cpu_capacity: CPU1 cpu_capacity=383 [ 2.208495] cpu_capacity: CPU2 cpu_capacity=383 [ 2.213037] cpu_capacity: CPU3 cpu_capacity=383 [ 2.217580] cpu_capacity: CPU4 cpu_capacity=1024 [ 2.222209] cpu_capacity: CPU5 cpu_capacity=1024 [ 2.226886] init_cpu_capacity_cppc: cpu_capacity initialization done root@ubuntu:~# tail -n +1 /sys/devices/system/cpu/cpu*/cpu_capacity ==> /sys/devices/system/cpu/cpu0/cpu_capacity <== 383 ==> /sys/devices/system/cpu/cpu1/cpu_capacity <== 383 ==> /sys/devices/system/cpu/cpu2/cpu_capacity <== 383 ==> /sys/devices/system/cpu/cpu3/cpu_capacity <== 383 ==> /sys/devices/system/cpu/cpu4/cpu_capacity <== 1024 ==> /sys/devices/system/cpu/cpu5/cpu_capacity <== 1024 All works as expected even if ACPI processor support is built as a module. Patches are based on v5.13-rc1. Let me know what you think! Thanks, Ionela. Ionela Voinescu (3): x86, ACPI: rename init_freq_invariance_cppc to arch_init_invariance_cppc arch_topology: obtain cpu capacity using information from CPPC arm64, topology: enable use of init_cpu_capacity_cppc() arch/arm64/include/asm/topology.h | 4 ++++ arch/x86/include/asm/topology.h | 2 +- drivers/acpi/cppc_acpi.c | 6 ++--- drivers/base/arch_topology.c | 39 +++++++++++++++++++++++++++++++ include/linux/arch_topology.h | 4 ++++ 5 files changed, 51 insertions(+), 4 deletions(-) Tested-by: Valentin Schneider