root/include/linux/sched/cpufreq.h

INCLUDED FROM

DEFINITIONS

1. map_util_freq

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _LINUX_SCHED_CPUFREQ_H
   3 #define _LINUX_SCHED_CPUFREQ_H
   4 
   5 #include <linux/types.h>
   6 
   7 /*
   8  * Interface between cpufreq drivers and the scheduler:
   9  */
  10 
  11 #define SCHED_CPUFREQ_IOWAIT    (1U << 0)
  12 #define SCHED_CPUFREQ_MIGRATION (1U << 1)
  13 
  14 #ifdef CONFIG_CPU_FREQ
  15 struct cpufreq_policy;
  16 
  17 struct update_util_data {
  18        void (*func)(struct update_util_data *data, u64 time, unsigned int flags);
  19 };
  20 
  21 void cpufreq_add_update_util_hook(int cpu, struct update_util_data *data,
  22                        void (*func)(struct update_util_data *data, u64 time,
  23                                     unsigned int flags));
  24 void cpufreq_remove_update_util_hook(int cpu);
  25 bool cpufreq_this_cpu_can_update(struct cpufreq_policy *policy);
  26 
  27 static inline unsigned long map_util_freq(unsigned long util,
  28                                         unsigned long freq, unsigned long cap)
  29 {
  30         return (freq + (freq >> 2)) * util / cap;
  31 }
  32 #endif /* CONFIG_CPU_FREQ */
  33 
  34 #endif /* _LINUX_SCHED_CPUFREQ_H */