From patchwork Fri May 22 03:34:34 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiongfeng Wang X-Patchwork-Id: 11564583 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8626413B4 for ; Fri, 22 May 2020 03:41:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6EB86207D8 for ; Fri, 22 May 2020 03:41:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727940AbgEVDlB (ORCPT ); Thu, 21 May 2020 23:41:01 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:4889 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727080AbgEVDlA (ORCPT ); Thu, 21 May 2020 23:41:00 -0400 Received: from DGGEMS407-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 858741D5D9A6821937A9; Fri, 22 May 2020 11:40:58 +0800 (CST) Received: from linux-ibm.site (10.175.102.37) by DGGEMS407-HUB.china.huawei.com (10.3.19.207) with Microsoft SMTP Server id 14.3.487.0; Fri, 22 May 2020 11:40:48 +0800 From: Xiongfeng Wang To: , CC: , , , , , , , , Subject: [PATCH v4 0/2] add SW BOOST support for CPPC Date: Fri, 22 May 2020 11:34:34 +0800 Message-ID: <1590118476-28742-1-git-send-email-wangxiongfeng2@huawei.com> X-Mailer: git-send-email 1.7.12.4 MIME-Version: 1.0 X-Originating-IP: [10.175.102.37] X-CFilter-Loop: Reflected Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org ACPI spec 6.2 section 8.4.7.1 provide the following two CPC registers. "Highest performance is the absolute maximum performance an individual processor may reach, assuming ideal conditions. This performance level may not be sustainable for long durations, and may only be achievable if other platform components are in a specific state; for example, it may require other processors be in an idle state. Nominal Performance is the maximum sustained performance level of the processor, assuming ideal operating conditions. In absence of an external constraint (power, thermal, etc.) this is the performance level the platform is expected to be able to maintain continuously. All processors are expected to be able to sustain their nominal performance state simultaneously." We can use Highest Performance as the max performance in boost mode and Nomial Performance as the max performance in non-boost mode. If the Highest Performance is greater than the Nominal Performance, we assume SW BOOST is supported. v3->v4: run 'boost_set_msr_each' for each CPU in the policy rather than each CPU in the system for 'acpi-cpufreq' add 'Suggested-by' Xiongfeng Wang (2): cpufreq: change '.set_boost' to act on only one policy CPPC: add support for SW BOOST drivers/cpufreq/acpi-cpufreq.c | 10 ++++---- drivers/cpufreq/cppc_cpufreq.c | 39 +++++++++++++++++++++++++++++-- drivers/cpufreq/cpufreq.c | 53 +++++++++++++++++++++--------------------- include/linux/cpufreq.h | 2 +- 4 files changed, 71 insertions(+), 33 deletions(-) Acked-by: Viresh Kumar