perf_events: Fix perf_counter_mmap() hook in mprotect()
[linux-2.6.git] / drivers / cpufreq / cpufreq_powersave.c
1 /*
2  *  linux/drivers/cpufreq/cpufreq_powersave.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, "powersave", msg)
20
21 static int cpufreq_governor_powersave(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",
28                                                         policy->min, event);
29                 __cpufreq_driver_target(policy, policy->min,
30                                                 CPUFREQ_RELATION_L);
31                 break;
32         default:
33                 break;
34         }
35         return 0;
36 }
37
38 #ifndef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE
39 static
40 #endif
41 struct cpufreq_governor cpufreq_gov_powersave = {
42         .name           = "powersave",
43         .governor       = cpufreq_governor_powersave,
44         .owner          = THIS_MODULE,
45 };
46
47 static int __init cpufreq_gov_powersave_init(void)
48 {
49         return cpufreq_register_governor(&cpufreq_gov_powersave);
50 }
51
52
53 static void __exit cpufreq_gov_powersave_exit(void)
54 {
55         cpufreq_unregister_governor(&cpufreq_gov_powersave);
56 }
57
58
59 MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
60 MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'");
61 MODULE_LICENSE("GPL");
62
63 #ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE
64 fs_initcall(cpufreq_gov_powersave_init);
65 #else
66 module_init(cpufreq_gov_powersave_init);
67 #endif
68 module_exit(cpufreq_gov_powersave_exit);