drivers/cpufreq/cpufreq_performance.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  linux/drivers/cpufreq/cpufreq_performance.c
   4  *
   5  *  Copyright (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
   6  */
   7
   8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
   9
  10 #include <linux/cpufreq.h>
  11 #include <linux/init.h>
  12 #include <linux/module.h>
  13
  14 static void cpufreq_gov_performance_limits(struct cpufreq_policy *policy)
  15 {
  16         pr_debug("setting to %u kHz\n", policy->max);
  17         __cpufreq_driver_target(policy, policy->max, CPUFREQ_RELATION_H);
  18 }
  19
  20 static struct cpufreq_governor cpufreq_gov_performance = {
  21         .name           = "performance",
  22         .owner          = THIS_MODULE,
  23         .flags          = CPUFREQ_GOV_STRICT_TARGET,
  24         .limits         = cpufreq_gov_performance_limits,
  25 };
  26
  27 #ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE
  28 struct cpufreq_governor *cpufreq_default_governor(void)
  29 {
  30         return &cpufreq_gov_performance;
  31 }
  32 #endif
  33 #ifndef CONFIG_CPU_FREQ_GOV_PERFORMANCE_MODULE
  34 struct cpufreq_governor *cpufreq_fallback_governor(void)
  35 {
  36         return &cpufreq_gov_performance;
  37 }
  38 #endif
  39
  40 MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
  41 MODULE_DESCRIPTION("CPUfreq policy governor 'performance'");
  42 MODULE_LICENSE("GPL");
  43
  44 cpufreq_governor_init(cpufreq_gov_performance);
  45 cpufreq_governor_exit(cpufreq_gov_performance);