1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  *  linux/drivers/cpufreq/cpufreq_performance.c
4  *
5  *  Copyright (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
6  */
7 
8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
9 
10 #include <linux/cpufreq.h>
11 #include <linux/init.h>
12 #include <linux/module.h>
13 
14 static void cpufreq_gov_performance_limits(struct cpufreq_policy *policy)
15 {
16 	pr_debug("setting to %u kHz\n", policy->max);
17 	__cpufreq_driver_target(policy, policy->max, CPUFREQ_RELATION_H);
18 }
19 
20 static struct cpufreq_governor cpufreq_gov_performance = {
21 	.name		= "performance",
22 	.owner		= THIS_MODULE,
23 	.limits		= cpufreq_gov_performance_limits,
24 };
25 
26 static int __init cpufreq_gov_performance_init(void)
27 {
28 	return cpufreq_register_governor(&cpufreq_gov_performance);
29 }
30 
31 static void __exit cpufreq_gov_performance_exit(void)
32 {
33 	cpufreq_unregister_governor(&cpufreq_gov_performance);
34 }
35 
36 #ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE
37 struct cpufreq_governor *cpufreq_default_governor(void)
38 {
39 	return &cpufreq_gov_performance;
40 }
41 #endif
42 #ifndef CONFIG_CPU_FREQ_GOV_PERFORMANCE_MODULE
43 struct cpufreq_governor *cpufreq_fallback_governor(void)
44 {
45 	return &cpufreq_gov_performance;
46 }
47 #endif
48 
49 MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
50 MODULE_DESCRIPTION("CPUfreq policy governor 'performance'");
51 MODULE_LICENSE("GPL");
52 
53 fs_initcall(cpufreq_gov_performance_init);
54 module_exit(cpufreq_gov_performance_exit);
55