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 
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 		pr_debug("setting to %u kHz because of event %u\n",
28 						policy->max, event);
29 		__cpufreq_driver_target(policy, policy->max,
30 						CPUFREQ_RELATION_H);
31 		break;
32 	default:
33 		break;
34 	}
35 	return 0;
36 }
37 
38 #ifdef CONFIG_CPU_FREQ_GOV_PERFORMANCE_MODULE
39 static
40 #endif
41 struct cpufreq_governor cpufreq_gov_performance = {
42 	.name		= "performance",
43 	.governor	= cpufreq_governor_performance,
44 	.owner		= THIS_MODULE,
45 };
46 
47 
48 static int __init cpufreq_gov_performance_init(void)
49 {
50 	return cpufreq_register_governor(&cpufreq_gov_performance);
51 }
52 
53 
54 static void __exit cpufreq_gov_performance_exit(void)
55 {
56 	cpufreq_unregister_governor(&cpufreq_gov_performance);
57 }
58 
59 
60 MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
61 MODULE_DESCRIPTION("CPUfreq policy governor 'performance'");
62 MODULE_LICENSE("GPL");
63 
64 fs_initcall(cpufreq_gov_performance_init);
65 module_exit(cpufreq_gov_performance_exit);
66