CpufreqSysfsDriver.hpp

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/*
 * Copyright (c) 2015 - 2025 Intel Corporation
 * SPDX-License-Identifier: BSD-3-Clause
 */
 
#ifndef CPUFREQSYSFSDRIVER_HPP_INCLUDE
#define CPUFREQSYSFSDRIVER_HPP_INCLUDE
 
#include <map>
#include <vector>
 
#include "geopm_topo.h"
 
#include "SysfsDriver.hpp"
 
namespace geopm
{
    class IOGroup;
    class PlatformTopo;
 
    class CpufreqSysfsDriver: public SysfsDriver
    {
        public:
            enum governor_e {
                GOVERNOR_PERFORMANCE = 0,
                GOVERNOR_POWERSAVE = 1,
                GOVERNOR_ONDEMAND = 2,
                GOVERNOR_CONSERVATIVE = 3,
                GOVERNOR_USERSPACE = 4,
                GOVERNOR_SCHEDUTIL = 5,
                NUM_GOVERNOR = 6,
            };
            enum governor_e {…};
 
            CpufreqSysfsDriver();
            CpufreqSysfsDriver(const PlatformTopo &topo,
                               const std::string &cpufreq_directory);
            virtual ~CpufreqSysfsDriver() = default;
            int domain_type(const std::string &name) const override;
            std::string attribute_path(const std::string &name,
                                       int domain_idx) override;
            std::function<double(const std::string&)> signal_parse(const std::string &signal_name) const override;
            std::function<std::string(double)> control_gen(const std::string &control_name) const override;
            std::string driver(void) const override;
            std::map<std::string, SysfsDriver::properties_s> properties(void) const override;
            static std::string plugin_name(void);
            static std::unique_ptr<IOGroup> make_plugin(void);
        private:
            const std::map<std::string, SysfsDriver::properties_s> M_PROPERTIES;
            const std::map<std::string, std::vector<int> > M_CPUFREQ_CPUS_BY_RESOURCE;
            const std::map<int, std::string> M_CPUFREQ_RESOURCE_BY_CPU;
            geopm_domain_e m_domain;
            const geopm::PlatformTopo &m_topo;
    };
    class CpufreqSysfsDriver: public SysfsDriver {…};
}
 
#endif