From patchwork Fri Mar 15 03:38:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Yuan, Perry" X-Patchwork-Id: 780890 Received: from NAM02-SN1-obe.outbound.protection.outlook.com (mail-sn1nam02on2052.outbound.protection.outlook.com [40.107.96.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2CAB2D52A; Fri, 15 Mar 2024 03:39:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.96.52 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710473971; cv=fail; b=BCQHBQYI5NbzKd5ZFrbmj8DK4ZeaDEtMEC3dSizDm49x8FfXJUF4FlJIiBZJto/IaE3dwDjWMbUDJ1UwxGEIriCrd6kzaQIBItanYRjdYpT3KtlcBZIDNtIPBmoxDBdWjWMgDX/e9EZ2uanFfBG+YVemwigdO66VqWV+kVspSPM= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710473971; c=relaxed/simple; bh=N2G8uH8/vhXB25ngc2NsVER2dgxrzzuxHwILKz+YtFY=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=SIx+G0dXshFk/JwaAYGhhZ+nwXrq6TwUz68GFRvgbsOnk2RzdQtnJL+/hy0cGhNN3n4K5EcZTNcEYO7VeAy/M3huranoIJQHtso792EqvqzVv3Wfs86nRTdb0EDsaREwPl14ZaON5uvqd7hw9UZgnAx+Fhv7BDBoRWtzFMwtKoQ= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com; spf=fail smtp.mailfrom=amd.com; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b=Ptw98Llb; arc=fail smtp.client-ip=40.107.96.52 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=amd.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b="Ptw98Llb" ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=kmmWFLcJlF36CbBKQ7iPlqJoDFfvymDYmsvEbI5ytdakBkT2zm/ozJrBvYG8lSQ7kGtTjtx+SvyBaplGiMtPu4paeV+UHhqZXG8rwjjhoBh8Y6YIGtMdGnQWNK1tQkoZPGZA0h4tWcO3PAiL1eu7jMhJATFQSVYWxUxKvjoLaGkX2WDtcQsEMr7Egde1Fki8CVIx61NbDjKB6153Z/LnLVXLeg+Be4GcL+TwlZd/IAJHW6CPM/2KLm7Zwhq1WPOh4rZUUyACZ1mQPXKtwjgxSKsIf1+eBpMl07zpwy1coNZ5nVfyrG1BpcSz9PTNn/cRfh59gSVlCiXMbBNcUy6f1Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=qrasiwfP2K2/k40S1xZcI0oX0AKyW0N1V3XTQ3Qg+sY=; b=cb6FLQ+U28exi1DN7hLQ4mEcV3N5QRxwhuxlOy49pzGOgjQtzaBIWMHtw2Hwcqq+tQiDNZkIKjOEbL9GXd8PWCFNoMkC3Ya6BKrR/z0QIRkar+NjXdrcyo1fD6BcufjiO/pQ8zqd+7wf/mrVO7a+HVfPtFMa3SJN/qE5OIuwIEbog3adngl0o45aFQLmdCXS/zNelO5FSlcmJUw2cqeb5/8ZQfMSvZ6NYjdTu7IwsbKA3y+KxUhMs0McnI47xPN3c/+3J1WBbKMWBRnG+gHuTa+JZZYDQCu8giRspZhZHXf2THAH4TpXdP1gqwJKWj4BD3B1zeUELFKbcLo6dW92kg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=intel.com smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=qrasiwfP2K2/k40S1xZcI0oX0AKyW0N1V3XTQ3Qg+sY=; b=Ptw98LlbNPRZOeJ+pKKSEDsnIpCKo2sUOuIRH9Nh8HkR4K0ryoqd0lN1YC97q5FXOvwmvQYY/pICz5OqIbHEvJFaGW/txVwJXBtuQ6UQUPa0nVE33Pax2s/FNhBeX1qUSxsunzZlSkBtHljfgCc6dUuQstAs3yI2XJJQ5tJQWRk= Received: from CH5PR05CA0023.namprd05.prod.outlook.com (2603:10b6:610:1f0::25) by MW4PR12MB6897.namprd12.prod.outlook.com (2603:10b6:303:20a::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7386.20; Fri, 15 Mar 2024 03:39:28 +0000 Received: from CH2PEPF00000142.namprd02.prod.outlook.com (2603:10b6:610:1f0:cafe::2d) by CH5PR05CA0023.outlook.office365.com (2603:10b6:610:1f0::25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7409.8 via Frontend Transport; Fri, 15 Mar 2024 03:39:27 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by CH2PEPF00000142.mail.protection.outlook.com (10.167.244.75) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.7386.12 via Frontend Transport; Fri, 15 Mar 2024 03:39:27 +0000 Received: from pyuan-Chachani-VN.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Thu, 14 Mar 2024 22:39:24 -0500 From: Perry Yuan To: , , , , , CC: , , , , , Subject: [PATCH v5 3/8] cpufreq: amd-pstate: implement cpb_boost sysfs entry for boost control Date: Fri, 15 Mar 2024 11:38:04 +0800 Message-ID: <44b62d7415b9c6cfa7467ff82e88566131f4bb9a.1710473712.git.perry.yuan@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH2PEPF00000142:EE_|MW4PR12MB6897:EE_ X-MS-Office365-Filtering-Correlation-Id: 7a63c1a2-44d7-4429-4c75-08dc44a18431 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB04.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230031)(376005)(1800799015)(82310400014)(36860700004); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Mar 2024 03:39:27.7390 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 7a63c1a2-44d7-4429-4c75-08dc44a18431 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CH2PEPF00000142.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW4PR12MB6897 From: Perry Yuan With this new sysfs entry `cpb_boost`created, user can change CPU boost state dynamically under `active`, `guided` and `passive` modes. And the highest perf and frequency will also be updated as the boost state changing. 0): check current boost state cat /sys/devices/system/cpu/amd_pstate/cpb_boost 1): disable CPU boost sudo bash -c "echo 0 > /sys/devices/system/cpu/amd_pstate/cpb_boost" 2): enable CPU boost sudo bash -c "echo 1 > /sys/devices/system/cpu/amd_pstate/cpb_boost" Link: https://bugzilla.kernel.org/show_bug.cgi?id=217931 Link: https://bugzilla.kernel.org/show_bug.cgi?id=217618 Signed-off-by: Perry Yuan --- drivers/cpufreq/amd-pstate.c | 97 ++++++++++++++++++++++++++++++++++++ 1 file changed, 97 insertions(+) diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index e5eb09f874ba..025f35bd3b01 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -1276,6 +1276,101 @@ static ssize_t prefcore_show(struct device *dev, return sysfs_emit(buf, "%s\n", str_enabled_disabled(amd_pstate_prefcore)); } +static int amd_cpu_boost_update(struct amd_cpudata *cpudata, u32 on) +{ + struct cpufreq_policy *policy = cpufreq_cpu_acquire(cpudata->cpu); + struct cppc_perf_ctrls perf_ctrls; + u32 highest_perf, nominal_perf; + int ret; + + if (!policy) + return -ENODATA; + + highest_perf = READ_ONCE(cpudata->highest_perf); + nominal_perf = READ_ONCE(cpudata->nominal_perf); + + if (boot_cpu_has(X86_FEATURE_CPPC)) { + u64 value = READ_ONCE(cpudata->cppc_req_cached); + + value &= ~GENMASK_ULL(7, 0); + value |= on ? highest_perf : nominal_perf; + WRITE_ONCE(cpudata->cppc_req_cached, value); + + wrmsrl_on_cpu(cpudata->cpu, MSR_AMD_CPPC_REQ, value); + + } else { + perf_ctrls.max_perf = on ? highest_perf : nominal_perf; + ret = cppc_set_epp_perf(cpudata->cpu, &perf_ctrls, 1); + if (ret) { + pr_debug("failed to set energy perf value (%d)\n", ret); + return ret; + } + } + + if (on) + policy->cpuinfo.max_freq = cpudata->max_freq; + else + policy->cpuinfo.max_freq = cpudata->nominal_freq * 1000; + + policy->max = policy->cpuinfo.max_freq; + + if (cppc_state == AMD_PSTATE_PASSIVE) { + ret = freq_qos_update_request(&cpudata->req[1], + policy->cpuinfo.max_freq); + } + + cpufreq_cpu_release(policy); + + return ret; +} + +static ssize_t cpb_boost_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return sysfs_emit(buf, "%u\n", amd_pstate_global_params.cpb_boost); +} + +static ssize_t cpb_boost_store(struct device *dev, struct device_attribute *b, + const char *buf, size_t count) +{ + bool new_state; + ssize_t ret; + int cpu; + + mutex_lock(&amd_pstate_driver_lock); + if (!amd_pstate_global_params.cpb_supported) { + pr_err("Boost mode is not supported by this processor or SBIOS\n"); + return -EINVAL; + } + + ret = kstrtobool(buf, &new_state); + if (ret) + return -EINVAL; + + amd_pstate_global_params.cpb_boost = !!new_state; + + for_each_online_cpu(cpu) { + + struct cpufreq_policy *policy = cpufreq_cpu_get(cpu); + struct amd_cpudata *cpudata = policy->driver_data; + + if (!cpudata) { + pr_err("cpudata is NULL\n"); + ret = -ENODATA; + cpufreq_cpu_put(policy); + goto err_exit; + } + + amd_cpu_boost_update(cpudata, amd_pstate_global_params.cpb_boost); + refresh_frequency_limits(policy); + cpufreq_cpu_put(policy); + } + +err_exit: + mutex_unlock(&amd_pstate_driver_lock); + return ret < 0 ? ret : count; +} + cpufreq_freq_attr_ro(amd_pstate_max_freq); cpufreq_freq_attr_ro(amd_pstate_lowest_nonlinear_freq); @@ -1286,6 +1381,7 @@ cpufreq_freq_attr_rw(energy_performance_preference); cpufreq_freq_attr_ro(energy_performance_available_preferences); static DEVICE_ATTR_RW(status); static DEVICE_ATTR_RO(prefcore); +static DEVICE_ATTR_RW(cpb_boost); static struct freq_attr *amd_pstate_attr[] = { &amd_pstate_max_freq, @@ -1310,6 +1406,7 @@ static struct freq_attr *amd_pstate_epp_attr[] = { static struct attribute *pstate_global_attributes[] = { &dev_attr_status.attr, &dev_attr_prefcore.attr, + &dev_attr_cpb_boost.attr, NULL };