1/* 2 * linux/drivers/cpufreq/cpufreq_performance.c 3 * 4 * Copyright (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de> 5 * 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 * 11 */ 12 13#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 14 15#include <linux/kernel.h> 16#include <linux/module.h> 17#include <linux/cpufreq.h> 18#include <linux/init.h> 19 20static int cpufreq_governor_performance(struct cpufreq_policy *policy, 21 unsigned int event) 22{ 23 switch (event) { 24 case CPUFREQ_GOV_START: 25 case CPUFREQ_GOV_LIMITS: 26 pr_debug("setting to %u kHz because of event %u\n", 27 policy->max, event); 28 __cpufreq_driver_target(policy, policy->max, 29 CPUFREQ_RELATION_H); 30 break; 31 default: 32 break; 33 } 34 return 0; 35} 36 37#ifdef CONFIG_CPU_FREQ_GOV_PERFORMANCE_MODULE 38static 39#endif 40struct cpufreq_governor cpufreq_gov_performance = { 41 .name = "performance", 42 .governor = cpufreq_governor_performance, 43 .owner = THIS_MODULE, 44}; 45 46static int __init cpufreq_gov_performance_init(void) 47{ 48 return cpufreq_register_governor(&cpufreq_gov_performance); 49} 50 51static void __exit cpufreq_gov_performance_exit(void) 52{ 53 cpufreq_unregister_governor(&cpufreq_gov_performance); 54} 55 56MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>"); 57MODULE_DESCRIPTION("CPUfreq policy governor 'performance'"); 58MODULE_LICENSE("GPL"); 59 60fs_initcall(cpufreq_gov_performance_init); 61module_exit(cpufreq_gov_performance_exit); 62