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/cpufreq.h> 161da177e4SLinus Torvalds #include <linux/init.h> 175ff0a268SViresh Kumar #include <linux/module.h> 181da177e4SLinus Torvalds 191da177e4SLinus Torvalds static int cpufreq_governor_performance(struct cpufreq_policy *policy, 201da177e4SLinus Torvalds unsigned int event) 211da177e4SLinus Torvalds { 221da177e4SLinus Torvalds switch (event) { 231da177e4SLinus Torvalds case CPUFREQ_GOV_LIMITS: 2416de72b9SRafael J. Wysocki pr_debug("setting to %u kHz\n", policy->max); 25e08f5f5bSGautham R Shenoy __cpufreq_driver_target(policy, policy->max, 26e08f5f5bSGautham R Shenoy CPUFREQ_RELATION_H); 271da177e4SLinus Torvalds break; 281da177e4SLinus Torvalds default: 291da177e4SLinus Torvalds break; 301da177e4SLinus Torvalds } 311da177e4SLinus Torvalds return 0; 321da177e4SLinus Torvalds } 331da177e4SLinus Torvalds 34de1df26bSRafael J. Wysocki static struct cpufreq_governor cpufreq_gov_performance = { 351da177e4SLinus Torvalds .name = "performance", 361da177e4SLinus Torvalds .governor = cpufreq_governor_performance, 371da177e4SLinus Torvalds .owner = THIS_MODULE, 381da177e4SLinus Torvalds }; 391da177e4SLinus Torvalds 401da177e4SLinus Torvalds static int __init cpufreq_gov_performance_init(void) 411da177e4SLinus Torvalds { 421da177e4SLinus Torvalds return cpufreq_register_governor(&cpufreq_gov_performance); 431da177e4SLinus Torvalds } 441da177e4SLinus Torvalds 451da177e4SLinus Torvalds static void __exit cpufreq_gov_performance_exit(void) 461da177e4SLinus Torvalds { 471da177e4SLinus Torvalds cpufreq_unregister_governor(&cpufreq_gov_performance); 481da177e4SLinus Torvalds } 491da177e4SLinus Torvalds 50de1df26bSRafael J. Wysocki #ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE 51de1df26bSRafael J. Wysocki struct cpufreq_governor *cpufreq_default_governor(void) 52de1df26bSRafael J. Wysocki { 53de1df26bSRafael J. Wysocki return &cpufreq_gov_performance; 54de1df26bSRafael J. Wysocki } 55de1df26bSRafael J. Wysocki #endif 56de1df26bSRafael J. Wysocki #ifndef CONFIG_CPU_FREQ_GOV_PERFORMANCE_MODULE 57de1df26bSRafael J. Wysocki struct cpufreq_governor *cpufreq_fallback_governor(void) 58de1df26bSRafael J. Wysocki { 59de1df26bSRafael J. Wysocki return &cpufreq_gov_performance; 60de1df26bSRafael J. Wysocki } 61de1df26bSRafael J. Wysocki #endif 62de1df26bSRafael J. Wysocki 631da177e4SLinus Torvalds MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>"); 641da177e4SLinus Torvalds MODULE_DESCRIPTION("CPUfreq policy governor 'performance'"); 651da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds fs_initcall(cpufreq_gov_performance_init); 681da177e4SLinus Torvalds module_exit(cpufreq_gov_performance_exit); 69