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 13db701151SViresh Kumar #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 14db701151SViresh Kumar 151da177e4SLinus Torvalds #include <linux/kernel.h> 161da177e4SLinus Torvalds #include <linux/module.h> 171da177e4SLinus Torvalds #include <linux/cpufreq.h> 181da177e4SLinus Torvalds #include <linux/init.h> 191da177e4SLinus Torvalds 201da177e4SLinus Torvalds 211da177e4SLinus Torvalds static int cpufreq_governor_performance(struct cpufreq_policy *policy, 221da177e4SLinus Torvalds unsigned int event) 231da177e4SLinus Torvalds { 241da177e4SLinus Torvalds switch (event) { 251da177e4SLinus Torvalds case CPUFREQ_GOV_START: 261da177e4SLinus Torvalds case CPUFREQ_GOV_LIMITS: 272d06d8c4SDominik Brodowski pr_debug("setting to %u kHz because of event %u\n", 28e08f5f5bSGautham R Shenoy policy->max, event); 29e08f5f5bSGautham R Shenoy __cpufreq_driver_target(policy, policy->max, 30e08f5f5bSGautham R Shenoy CPUFREQ_RELATION_H); 311da177e4SLinus Torvalds break; 321da177e4SLinus Torvalds default: 331da177e4SLinus Torvalds break; 341da177e4SLinus Torvalds } 351da177e4SLinus Torvalds return 0; 361da177e4SLinus Torvalds } 371da177e4SLinus Torvalds 38c4d14bc0SSven Wegener #ifdef CONFIG_CPU_FREQ_GOV_PERFORMANCE_MODULE 39c4d14bc0SSven Wegener static 40c4d14bc0SSven Wegener #endif 411da177e4SLinus Torvalds struct cpufreq_governor cpufreq_gov_performance = { 421da177e4SLinus Torvalds .name = "performance", 431da177e4SLinus Torvalds .governor = cpufreq_governor_performance, 441da177e4SLinus Torvalds .owner = THIS_MODULE, 451da177e4SLinus Torvalds }; 461da177e4SLinus Torvalds 471da177e4SLinus Torvalds 481da177e4SLinus Torvalds static int __init cpufreq_gov_performance_init(void) 491da177e4SLinus Torvalds { 501da177e4SLinus Torvalds return cpufreq_register_governor(&cpufreq_gov_performance); 511da177e4SLinus Torvalds } 521da177e4SLinus Torvalds 531da177e4SLinus Torvalds 541da177e4SLinus Torvalds static void __exit cpufreq_gov_performance_exit(void) 551da177e4SLinus Torvalds { 561da177e4SLinus Torvalds cpufreq_unregister_governor(&cpufreq_gov_performance); 571da177e4SLinus Torvalds } 581da177e4SLinus Torvalds 591da177e4SLinus Torvalds 601da177e4SLinus Torvalds MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>"); 611da177e4SLinus Torvalds MODULE_DESCRIPTION("CPUfreq policy governor 'performance'"); 621da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 631da177e4SLinus Torvalds 641da177e4SLinus Torvalds fs_initcall(cpufreq_gov_performance_init); 651da177e4SLinus Torvalds module_exit(cpufreq_gov_performance_exit); 66