blob: de91e3371ef82347710977d13c55a777f0c3189b [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
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 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}
Dave Jones32ee8c32006-02-28 00:43:23 -050035
Linus Torvalds1da177e2005-04-16 15:20:36 -070036struct cpufreq_governor cpufreq_gov_performance = {
37 .name = "performance",
38 .governor = cpufreq_governor_performance,
39 .owner = THIS_MODULE,
40};
41EXPORT_SYMBOL(cpufreq_gov_performance);
42
43
44static int __init cpufreq_gov_performance_init(void)
45{
46 return cpufreq_register_governor(&cpufreq_gov_performance);
47}
48
49
50static void __exit cpufreq_gov_performance_exit(void)
51{
52 cpufreq_unregister_governor(&cpufreq_gov_performance);
53}
54
55
56MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
57MODULE_DESCRIPTION("CPUfreq policy governor 'performance'");
58MODULE_LICENSE("GPL");
59
60fs_initcall(cpufreq_gov_performance_init);
61module_exit(cpufreq_gov_performance_exit);