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1da177e4 LT |
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); |