[SPARC64]: Serial Console for E250 Patch
[linux-2.6] / 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...) cpufreq_debug_printk(CPUFREQ_DEBUG_GOVERNOR, "performance", msg)
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                 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 }
35                                                             
36 struct cpufreq_governor cpufreq_gov_performance = {
37         .name           = "performance",
38         .governor       = cpufreq_governor_performance,
39         .owner          = THIS_MODULE,
40 };
41 EXPORT_SYMBOL(cpufreq_gov_performance);
42
43
44 static int __init cpufreq_gov_performance_init(void)
45 {
46         return cpufreq_register_governor(&cpufreq_gov_performance);
47 }
48
49
50 static void __exit cpufreq_gov_performance_exit(void)
51 {
52         cpufreq_unregister_governor(&cpufreq_gov_performance);
53 }
54
55
56 MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
57 MODULE_DESCRIPTION("CPUfreq policy governor 'performance'");
58 MODULE_LICENSE("GPL");
59
60 fs_initcall(cpufreq_gov_performance_init);
61 module_exit(cpufreq_gov_performance_exit);