11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * linux/drivers/cpufreq/cpufreq_performance.c 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de> 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * 71da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or modify 81da177e4SLinus Torvalds * it under the terms of the GNU General Public License version 2 as 91da177e4SLinus Torvalds * published by the Free Software Foundation. 101da177e4SLinus Torvalds * 111da177e4SLinus Torvalds */ 121da177e4SLinus Torvalds 131da177e4SLinus Torvalds #include <linux/kernel.h> 141da177e4SLinus Torvalds #include <linux/module.h> 151da177e4SLinus Torvalds #include <linux/cpufreq.h> 161da177e4SLinus Torvalds #include <linux/init.h> 171da177e4SLinus Torvalds 18e08f5f5bSGautham R Shenoy #define dprintk(msg...) \ 19e08f5f5bSGautham R Shenoy cpufreq_debug_printk(CPUFREQ_DEBUG_GOVERNOR, "performance", msg) 201da177e4SLinus Torvalds 211da177e4SLinus Torvalds 221da177e4SLinus Torvalds static int cpufreq_governor_performance(struct cpufreq_policy *policy, 231da177e4SLinus Torvalds unsigned int event) 241da177e4SLinus Torvalds { 251da177e4SLinus Torvalds switch (event) { 261da177e4SLinus Torvalds case CPUFREQ_GOV_START: 271da177e4SLinus Torvalds case CPUFREQ_GOV_LIMITS: 28e08f5f5bSGautham R Shenoy dprintk("setting to %u kHz because of event %u\n", 29e08f5f5bSGautham R Shenoy policy->max, event); 30e08f5f5bSGautham R Shenoy __cpufreq_driver_target(policy, policy->max, 31e08f5f5bSGautham R Shenoy CPUFREQ_RELATION_H); 321da177e4SLinus Torvalds break; 331da177e4SLinus Torvalds default: 341da177e4SLinus Torvalds break; 351da177e4SLinus Torvalds } 361da177e4SLinus Torvalds return 0; 371da177e4SLinus Torvalds } 381da177e4SLinus Torvalds 39c4d14bc0SSven Wegener #ifdef CONFIG_CPU_FREQ_GOV_PERFORMANCE_MODULE 40c4d14bc0SSven Wegener static 41c4d14bc0SSven Wegener #endif 421da177e4SLinus Torvalds struct cpufreq_governor cpufreq_gov_performance = { 431da177e4SLinus Torvalds .name = "performance", 441da177e4SLinus Torvalds .governor = cpufreq_governor_performance, 451da177e4SLinus Torvalds .owner = THIS_MODULE, 461da177e4SLinus Torvalds }; 471da177e4SLinus Torvalds 481da177e4SLinus Torvalds 491da177e4SLinus Torvalds static int __init cpufreq_gov_performance_init(void) 501da177e4SLinus Torvalds { 511da177e4SLinus Torvalds return cpufreq_register_governor(&cpufreq_gov_performance); 521da177e4SLinus Torvalds } 531da177e4SLinus Torvalds 541da177e4SLinus Torvalds 551da177e4SLinus Torvalds static void __exit cpufreq_gov_performance_exit(void) 561da177e4SLinus Torvalds { 571da177e4SLinus Torvalds cpufreq_unregister_governor(&cpufreq_gov_performance); 581da177e4SLinus Torvalds } 591da177e4SLinus Torvalds 601da177e4SLinus Torvalds 611da177e4SLinus Torvalds MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>"); 621da177e4SLinus Torvalds MODULE_DESCRIPTION("CPUfreq policy governor 'performance'"); 631da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 641da177e4SLinus Torvalds 651da177e4SLinus Torvalds fs_initcall(cpufreq_gov_performance_init); 661da177e4SLinus Torvalds module_exit(cpufreq_gov_performance_exit); 67