Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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
21static 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
39static
40#endif
41struct cpufreq_governor cpufreq_gov_performance = {
42 .name = "performance",
43 .governor = cpufreq_governor_performance,
44 .owner = THIS_MODULE,
45};
46
47
48static int __init cpufreq_gov_performance_init(void)
49{
50 return cpufreq_register_governor(&cpufreq_gov_performance);
51}
52
53
54static void __exit cpufreq_gov_performance_exit(void)
55{
56 cpufreq_unregister_governor(&cpufreq_gov_performance);
57}
58
59
60MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
61MODULE_DESCRIPTION("CPUfreq policy governor 'performance'");
62MODULE_LICENSE("GPL");
63
64fs_initcall(cpufreq_gov_performance_init);
65module_exit(cpufreq_gov_performance_exit);