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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 | ||
db701151 VK |
13 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
14 | ||
1da177e4 LT |
15 | #include <linux/cpufreq.h> |
16 | #include <linux/init.h> | |
5ff0a268 | 17 | #include <linux/module.h> |
1da177e4 | 18 | |
1da177e4 LT |
19 | static int cpufreq_governor_performance(struct cpufreq_policy *policy, |
20 | unsigned int event) | |
21 | { | |
22 | switch (event) { | |
23 | case CPUFREQ_GOV_START: | |
24 | case CPUFREQ_GOV_LIMITS: | |
2d06d8c4 | 25 | pr_debug("setting to %u kHz because of event %u\n", |
e08f5f5b GS |
26 | policy->max, event); |
27 | __cpufreq_driver_target(policy, policy->max, | |
28 | CPUFREQ_RELATION_H); | |
1da177e4 LT |
29 | break; |
30 | default: | |
31 | break; | |
32 | } | |
33 | return 0; | |
34 | } | |
32ee8c3e | 35 | |
de1df26b | 36 | static struct cpufreq_governor cpufreq_gov_performance = { |
1da177e4 LT |
37 | .name = "performance", |
38 | .governor = cpufreq_governor_performance, | |
39 | .owner = THIS_MODULE, | |
40 | }; | |
1da177e4 | 41 | |
1da177e4 LT |
42 | static int __init cpufreq_gov_performance_init(void) |
43 | { | |
44 | return cpufreq_register_governor(&cpufreq_gov_performance); | |
45 | } | |
46 | ||
1da177e4 LT |
47 | static void __exit cpufreq_gov_performance_exit(void) |
48 | { | |
49 | cpufreq_unregister_governor(&cpufreq_gov_performance); | |
50 | } | |
51 | ||
de1df26b RW |
52 | #ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE |
53 | struct cpufreq_governor *cpufreq_default_governor(void) | |
54 | { | |
55 | return &cpufreq_gov_performance; | |
56 | } | |
57 | #endif | |
58 | #ifndef CONFIG_CPU_FREQ_GOV_PERFORMANCE_MODULE | |
59 | struct cpufreq_governor *cpufreq_fallback_governor(void) | |
60 | { | |
61 | return &cpufreq_gov_performance; | |
62 | } | |
63 | #endif | |
64 | ||
1da177e4 LT |
65 | MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>"); |
66 | MODULE_DESCRIPTION("CPUfreq policy governor 'performance'"); | |
67 | MODULE_LICENSE("GPL"); | |
68 | ||
69 | fs_initcall(cpufreq_gov_performance_init); | |
70 | module_exit(cpufreq_gov_performance_exit); |