Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
[linux-2.6.git] / drivers / cpufreq / cpufreq_performance.c
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 #include <linux/kernel.h>
14 #include <linux/module.h>
15 #include <linux/cpufreq.h>
16 #include <linux/init.h>
17
18 #define dprintk(msg...) \
19         cpufreq_debug_printk(CPUFREQ_DEBUG_GOVERNOR, "performance", msg)
20
21
22 static int cpufreq_governor_performance(struct cpufreq_policy *policy,
23                                         unsigned int event)
24 {
25         switch (event) {
26         case CPUFREQ_GOV_START:
27         case CPUFREQ_GOV_LIMITS:
28                 dprintk("setting to %u kHz because of event %u\n",
29                                                 policy->max, event);
30                 __cpufreq_driver_target(policy, policy->max,
31                                                 CPUFREQ_RELATION_H);
32                 break;
33         default:
34                 break;
35         }
36         return 0;
37 }
38
39 #ifdef CONFIG_CPU_FREQ_GOV_PERFORMANCE_MODULE
40 static
41 #endif
42 struct cpufreq_governor cpufreq_gov_performance = {
43         .name           = "performance",
44         .governor       = cpufreq_governor_performance,
45         .owner          = THIS_MODULE,
46 };
47
48
49 static int __init cpufreq_gov_performance_init(void)
50 {
51         return cpufreq_register_governor(&cpufreq_gov_performance);
52 }
53
54
55 static void __exit cpufreq_gov_performance_exit(void)
56 {
57         cpufreq_unregister_governor(&cpufreq_gov_performance);
58 }
59
60
61 MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
62 MODULE_DESCRIPTION("CPUfreq policy governor 'performance'");
63 MODULE_LICENSE("GPL");
64
65 fs_initcall(cpufreq_gov_performance_init);
66 module_exit(cpufreq_gov_performance_exit);