From patchwork Tue Aug 24 10:56:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ionela Voinescu X-Patchwork-Id: 12454705 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,URIBL_BLOCKED,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 9A5F7C4338F for ; Tue, 24 Aug 2021 11:03:04 +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 6A96261214 for ; Tue, 24 Aug 2021 11:03:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6A96261214 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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: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=2NC42Zc42fDi8n7vNgDYO/ATonvPxrihW6VLp97sW3k=; b=1X8Ed8S5n+yPxR eSuFGMD0/uyFxhx5VCPbcBobk9ntsGOa3B/CkjhUTIc1KvzDopISFbYnNM/Vl36dnHsfoYVoqTdO2 r9pViLRYibTXT9aXI0AfuHvcGHFDDrHgdt1QPCj6xiXrubWpHlm9M8b/9daRYkQ6WVdS60r8EqeCt e0vCJQcOAMyO3K/5cCOAnePdWrdjBmG5Tl4rcAxLTwkVijKHEya8Vo+9OZZYpaYBdIGZt8W+o0J7G +lwfk/g9H0wJx/y35OBAM8MNRj+QFwcHoyUtoTKRHuX/Jm428ady/Wxe4ZQnSYvUPM3cg6o7DCcT9 oN0/3GRCx5P5QELS3v4Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mIUAC-002e9l-3a; Tue, 24 Aug 2021 11:00:16 +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 1mIU75-002cSi-OR for linux-arm-kernel@lists.infradead.org; Tue, 24 Aug 2021 10:57:05 +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 E2B6E101E; Tue, 24 Aug 2021 03:57:00 -0700 (PDT) Received: from e108754-lin.cambridge.arm.com (e108754-lin.cambridge.arm.com [10.1.198.34]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 3FF683F66F; Tue, 24 Aug 2021 03:56:59 -0700 (PDT) From: Ionela Voinescu To: Sudeep Holla , "Rafael J . Wysocki" , Thomas Gleixner , Ingo Molnar , Giovanni Gherdovich , Catalin Marinas , Will Deacon , Valentin Schneider , Dietmar Eggemann , Sean Kelley Cc: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 0/3] arch_topology, ACPI: populate cpu capacity from CPPC Date: Tue, 24 Aug 2021 11:56:48 +0100 Message-Id: <20210824105651.28660-1-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-20210824_035703_899102_8EC086B0 X-CRM114-Status: GOOD ( 10.08 ) 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, Apologies for the long delay in posting v2. v1->v2: - v1 can be found at [1] - Changed debug prints to the format used on the DT path - s/init_cpu_capacity_cppc/topology_init_cpu_capacity_cppc Patches are based on v5.14-rc7. 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@buildroot:~# dmesg | grep cpu_capacity [ 2.191152] cpu_capacity: CPU0 cpu_capacity=38300 (raw). [ 2.196482] cpu_capacity: CPU1 cpu_capacity=38300 (raw). [ 2.201809] cpu_capacity: CPU2 cpu_capacity=38300 (raw). [ 2.207136] cpu_capacity: CPU3 cpu_capacity=38300 (raw). [ 2.212463] cpu_capacity: CPU4 cpu_capacity=102400 (raw). [ 2.217877] cpu_capacity: CPU5 cpu_capacity=102400 (raw). [ 2.223291] cpu_capacity: capacity_scale=102400 [ 2.227834] cpu_capacity: CPU0 cpu_capacity=383 [ 2.232376] cpu_capacity: CPU1 cpu_capacity=383 [ 2.236919] cpu_capacity: CPU2 cpu_capacity=383 [ 2.241462] cpu_capacity: CPU3 cpu_capacity=383 [ 2.246004] cpu_capacity: CPU4 cpu_capacity=1024 [ 2.250634] cpu_capacity: CPU5 cpu_capacity=1024 [ 2.255321] cpu_capacity: cpu_capacity initialization done root@buildroot:~# 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 [1] https://lore.kernel.org/lkml/20210514095339.12979-1-ionela.voinescu@arm.com/ 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 | 37 +++++++++++++++++++++++++++++++ include/linux/arch_topology.h | 4 ++++ 5 files changed, 49 insertions(+), 4 deletions(-)