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#include <linux/kernel.h> 14#include <linux/module.h> 15#include <linux/cpufreq.h> 16#include <linux/init.h> 17 18#define dprintk(msg...) \ 19 cpufreq_debug_printk(CPUFREQ_DEBUG_GOVERNOR, "performance", msg) 20 21 22static int cpufreq_governor_performance(struct cpufreq_policy *policy, 23 unsigned int event) 24{ 25 switch (event) { 26 case CPUFREQ_GOV_START: 27 case CPUFREQ_GOV_LIMITS: 28 dprintk("setting to %u kHz because of event %u\n", 29 policy->max, event); 30 __cpufreq_driver_target(policy, policy->max, 31 CPUFREQ_RELATION_H); 32 break; 33 default: 34 break; 35 } 36 return 0; 37} 38 39struct cpufreq_governor cpufreq_gov_performance = { 40 .name = "performance", 41 .governor = cpufreq_governor_performance, 42 .owner = THIS_MODULE, 43}; 44EXPORT_SYMBOL(cpufreq_gov_performance); 45 46 47static int __init cpufreq_gov_performance_init(void) 48{ 49 return cpufreq_register_governor(&cpufreq_gov_performance); 50} 51 52 53static void __exit cpufreq_gov_performance_exit(void) 54{ 55 cpufreq_unregister_governor(&cpufreq_gov_performance); 56} 57 58 59MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>"); 60MODULE_DESCRIPTION("CPUfreq policy governor 'performance'"); 61MODULE_LICENSE("GPL"); 62 63fs_initcall(cpufreq_gov_performance_init); 64module_exit(cpufreq_gov_performance_exit); 65