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