From patchwork Tue Feb 27 18:16:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sibi Sankar X-Patchwork-Id: 776747 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (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 877BE14E2C6; Tue, 27 Feb 2024 18:17:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709057835; cv=none; b=JpcpGXpuEWELkGtD0P9wi3+jU1Fl/HH1xZ2Q9OSKeuZvHAJlVO5a+9x9iH7Yqvsiz81/naR4X4bDAUHzZ1fFSoPqvNpLPYAzBTmx4YavblU8zmxeb0szpKUvr5BJEQj8oExoBlJcozlrsiNAPiyf9vU/ArDz1yr3OC0bMDZ87Cc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709057835; c=relaxed/simple; bh=VhS2marpAJhmzwdzG68V9UDfvaq1+yzWiwULi+fnfkM=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=RcimZDnG3ovzIHj82YdkDOsNwyEfSw8j4h65+nXBvtTYgTAvu3eSGXEuh0E22cM8Kt5EWg7v4hvxdTv48mo8bnWb6Gqv8+KoO7g+oulTf3qlewfBQAquQexvaMOY0UEDsc0CVCnp9KdmrSIuPCUihd+Vlt0SbUau5r/i+YIzUEI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=ZbdMD4Rv; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="ZbdMD4Rv" Received: from pps.filterd (m0279870.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 41RCcQNQ009100; Tue, 27 Feb 2024 18:17:00 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= qcppdkim1; bh=+XisjrXej/qF+2/kx+HyeD/Uy0VYfx0bpvsKDHSd6lA=; b=Zb dMD4RvD6nb6rkgW1n4gxAqDnsi/PZWRqi6PJqdjoKJm5aMfPUd0AojNycK8zS2KW NusQ4tXpmoV14nwG1oG4kDFqkU/n5ce86H+k9PD4LEx/xB6XbWwnVgtC8HXStPBW CrIxO88EafVxsZ2w68ojAj9kXDVShgemwWasAjOLrPvnlTnIQciR2lNlwMEKid7B WDt8K7AzwiSg6UaFolvtZ5uZnKoWPpb7h9e5eRn/NsAXHBepTxzmW0qVxkWhgTsX qzXaWb5wQxpKfQAmtSLScdMIXilY8Mqa7JkZNwg5BF+BmVVAoIBTYRmHFdapbsMH Rt0RoXk+q7RIaiWnRIKg== Received: from nalasppmta03.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3wha079q6d-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 27 Feb 2024 18:17:00 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA03.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 41RIGxUm024172 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 27 Feb 2024 18:16:59 GMT Received: from hu-sibis-blr.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Tue, 27 Feb 2024 10:16:55 -0800 From: Sibi Sankar To: , , , , , , , CC: , , , , , Sibi Sankar Subject: [PATCH V3 1/2] cpufreq: Export cpufreq_update_pressure Date: Tue, 27 Feb 2024 23:46:31 +0530 Message-ID: <20240227181632.659133-2-quic_sibis@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240227181632.659133-1-quic_sibis@quicinc.com> References: <20240227181632.659133-1-quic_sibis@quicinc.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: OKKZYQF4HsyUUVpDTKFWW-lj4JxdRgk3 X-Proofpoint-GUID: OKKZYQF4HsyUUVpDTKFWW-lj4JxdRgk3 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-27_05,2024-02-27_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 adultscore=0 mlxlogscore=925 clxscore=1015 suspectscore=0 bulkscore=0 priorityscore=1501 lowpriorityscore=0 phishscore=0 spamscore=0 malwarescore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2402120000 definitions=main-2402270141 The SCMI cpufreq driver doesn't require any additional signal smoothing provided by arch_update_hw_pressure interface, export cpufreq_update_pressure so that it can be called upon directly instead. Suggested-by: Lukasz Luba Signed-off-by: Sibi Sankar --- drivers/cpufreq/cpufreq.c | 3 ++- include/linux/cpufreq.h | 2 ++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 76002aa3d12d..bdec2dfd77eb 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -2573,7 +2573,7 @@ DEFINE_PER_CPU(unsigned long, cpufreq_pressure); * * Update the value of cpufreq pressure for all @cpus in the policy. */ -static void cpufreq_update_pressure(struct cpufreq_policy *policy) +void cpufreq_update_pressure(struct cpufreq_policy *policy) { unsigned long max_capacity, capped_freq, pressure; u32 max_freq; @@ -2598,6 +2598,7 @@ static void cpufreq_update_pressure(struct cpufreq_policy *policy) for_each_cpu(cpu, policy->related_cpus) WRITE_ONCE(per_cpu(cpufreq_pressure, cpu), pressure); } +EXPORT_SYMBOL(cpufreq_update_pressure); /** * cpufreq_set_policy - Modify cpufreq policy parameters. diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 414bfc976b30..957bf8e4ca0d 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -241,6 +241,7 @@ struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy); void cpufreq_enable_fast_switch(struct cpufreq_policy *policy); void cpufreq_disable_fast_switch(struct cpufreq_policy *policy); bool has_target_index(void); +void cpufreq_update_pressure(struct cpufreq_policy *policy); DECLARE_PER_CPU(unsigned long, cpufreq_pressure); static inline unsigned long cpufreq_get_pressure(int cpu) @@ -270,6 +271,7 @@ static inline bool cpufreq_supports_freq_invariance(void) } static inline void disable_cpufreq(void) { } static inline void cpufreq_update_limits(unsigned int cpu) { } +static inline void cpufreq_update_pressure(struct cpufreq_policy *policy) { } static inline unsigned long cpufreq_get_pressure(int cpu) { return 0; From patchwork Tue Feb 27 18:16:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sibi Sankar X-Patchwork-Id: 776387 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (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 D78111487D8; 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Tue, 27 Feb 2024 18:17:15 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 41RIH3Ae010219 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 27 Feb 2024 18:17:03 GMT Received: from hu-sibis-blr.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Tue, 27 Feb 2024 10:16:59 -0800 From: Sibi Sankar To: , , , , , , , CC: , , , , , Sibi Sankar Subject: [PATCH V3 2/2] cpufreq: scmi: Register for limit change notifications Date: Tue, 27 Feb 2024 23:46:32 +0530 Message-ID: <20240227181632.659133-3-quic_sibis@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240227181632.659133-1-quic_sibis@quicinc.com> References: <20240227181632.659133-1-quic_sibis@quicinc.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: ZEb7q_z4kIURjHSXm1GTUsykMg-r9OjA X-Proofpoint-ORIG-GUID: ZEb7q_z4kIURjHSXm1GTUsykMg-r9OjA X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-27_05,2024-02-27_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 impostorscore=0 mlxlogscore=999 priorityscore=1501 spamscore=0 adultscore=0 malwarescore=0 mlxscore=0 lowpriorityscore=0 phishscore=0 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2402120000 definitions=main-2402270142 Register for limit change notifications if supported and use the throttled frequency from the notification to apply HW pressure. Signed-off-by: Sibi Sankar Reviewed-by: Lukasz Luba --- v3: * Sanitize range_max received from the notifier. [Pierre] * Update commit message. drivers/cpufreq/scmi-cpufreq.c | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/drivers/cpufreq/scmi-cpufreq.c b/drivers/cpufreq/scmi-cpufreq.c index 76a0ddbd9d24..78b87b72962d 100644 --- a/drivers/cpufreq/scmi-cpufreq.c +++ b/drivers/cpufreq/scmi-cpufreq.c @@ -25,9 +25,13 @@ struct scmi_data { int domain_id; int nr_opp; struct device *cpu_dev; + struct cpufreq_policy *policy; cpumask_var_t opp_shared_cpus; + struct notifier_block limit_notify_nb; }; +const struct scmi_handle *handle; +static struct scmi_device *scmi_dev; static struct scmi_protocol_handle *ph; static const struct scmi_perf_proto_ops *perf_ops; static struct cpufreq_driver scmi_cpufreq_driver; @@ -151,6 +155,20 @@ static struct freq_attr *scmi_cpufreq_hw_attr[] = { NULL, }; +static int scmi_limit_notify_cb(struct notifier_block *nb, unsigned long event, void *data) +{ + struct scmi_data *priv = container_of(nb, struct scmi_data, limit_notify_nb); + struct scmi_perf_limits_report *limit_notify = data; + struct cpufreq_policy *policy = priv->policy; + + policy->max = clamp(limit_notify->range_max_freq/HZ_PER_KHZ, policy->cpuinfo.min_freq, + policy->cpuinfo.max_freq); + + cpufreq_update_pressure(policy); + + return NOTIFY_OK; +} + static int scmi_cpufreq_init(struct cpufreq_policy *policy) { int ret, nr_opp, domain; @@ -269,6 +287,15 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy) } } + priv->limit_notify_nb.notifier_call = scmi_limit_notify_cb; + ret = handle->notify_ops->devm_event_notifier_register(scmi_dev, SCMI_PROTOCOL_PERF, + SCMI_EVENT_PERFORMANCE_LIMITS_CHANGED, + &domain, + &priv->limit_notify_nb); + if (ret) + dev_warn(cpu_dev, + "failed to register for limits change notifier for domain %d\n", domain); + priv->policy = policy; return 0; @@ -342,8 +369,8 @@ static int scmi_cpufreq_probe(struct scmi_device *sdev) { int ret; struct device *dev = &sdev->dev; - const struct scmi_handle *handle; + scmi_dev = sdev; handle = sdev->handle; if (!handle)