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