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/cpufreq.h>
16 #include <linux/init.h>
17 #include <linux/module.h>
18 
cpufreq_gov_performance_limits(struct cpufreq_policy * policy)19 static void cpufreq_gov_performance_limits(struct cpufreq_policy *policy)
20 {
21 	pr_debug("setting to %u kHz\n", policy->max);
22 	__cpufreq_driver_target(policy, policy->max, CPUFREQ_RELATION_H);
23 }
24 
25 static struct cpufreq_governor cpufreq_gov_performance = {
26 	.name		= "performance",
27 	.owner		= THIS_MODULE,
28 	.limits		= cpufreq_gov_performance_limits,
29 };
30 
cpufreq_gov_performance_init(void)31 static int __init cpufreq_gov_performance_init(void)
32 {
33 	return cpufreq_register_governor(&cpufreq_gov_performance);
34 }
35 
cpufreq_gov_performance_exit(void)36 static void __exit cpufreq_gov_performance_exit(void)
37 {
38 	cpufreq_unregister_governor(&cpufreq_gov_performance);
39 }
40 
41 #ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE
cpufreq_default_governor(void)42 struct cpufreq_governor *cpufreq_default_governor(void)
43 {
44 	return &cpufreq_gov_performance;
45 }
46 #endif
47 #ifndef CONFIG_CPU_FREQ_GOV_PERFORMANCE_MODULE
cpufreq_fallback_governor(void)48 struct cpufreq_governor *cpufreq_fallback_governor(void)
49 {
50 	return &cpufreq_gov_performance;
51 }
52 #endif
53 
54 MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
55 MODULE_DESCRIPTION("CPUfreq policy governor 'performance'");
56 MODULE_LICENSE("GPL");
57 
58 fs_initcall(cpufreq_gov_performance_init);
59 module_exit(cpufreq_gov_performance_exit);
60