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: 12454687 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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=ham 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 7B99CC432BE for ; Tue, 24 Aug 2021 10:57:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5DF2F61214 for ; Tue, 24 Aug 2021 10:57:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236340AbhHXK5p (ORCPT ); Tue, 24 Aug 2021 06:57:45 -0400 Received: from foss.arm.com ([217.140.110.172]:33904 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235905AbhHXK5p (ORCPT ); Tue, 24 Aug 2021 06:57:45 -0400 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 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.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(-)