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 15934C7EE2A for ; Tue, 16 May 2023 13:33:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233505AbjEPNdU (ORCPT ); Tue, 16 May 2023 09:33:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45676 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233545AbjEPNdL (ORCPT ); Tue, 16 May 2023 09:33:11 -0400 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E6E393C1D; Tue, 16 May 2023 06:33:08 -0700 (PDT) Received: from kwepemi500024.china.huawei.com (unknown [172.30.72.56]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4QLHD43sp4zLpx1; Tue, 16 May 2023 21:30:12 +0800 (CST) Received: from huawei.com (10.175.103.91) by kwepemi500024.china.huawei.com (7.221.188.100) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Tue, 16 May 2023 21:33:04 +0800 From: Zeng Heng To: , , CC: , , , , , , Subject: [PATCH 0/2] drivers/cpufreq: gain accurate CPU frequency from cpufreq/scaling_cur_freq Date: Tue, 16 May 2023 21:32:48 +0800 Message-ID: <20230516133248.712242-3-zengheng4@huawei.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230516133248.712242-1-zengheng4@huawei.com> References: <20230516133248.712242-1-zengheng4@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.175.103.91] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To kwepemi500024.china.huawei.com (7.221.188.100) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When users want to get frequency by scaling_cur_freq under cpufreq sysfs, they often get the invalid result like: $ cat /sys/devices/system/cpu/cpu6/cpufreq/scaling_cur_freq 4294967295 So this series provides fixes to the concerned issue. Zeng Heng (2): cpufreq: CPPC: keep target core awake when reading its cpufreq rate acpi: CPPC: read delivered_reg and reference_reg in critical section drivers/acpi/cppc_acpi.c | 4 ++++ drivers/cpufreq/cppc_cpufreq.c | 30 ++++++++++++++++-------------- 2 files changed, 20 insertions(+), 14 deletions(-) -- 2.25.1