text: /* SPDX-License-Identifier: GPL-2.0 */
  #ifndef _LINUX_SCHED_CPUFREQ_H
  #define _LINUX_SCHED_CPUFREQ_H
  
  #include <linux/types.h>
  
  /*
   * Interface between cpufreq drivers and the scheduler:
   */
  
  #define SCHED_CPUFREQ_RT	(1U << 0)
  #define SCHED_CPUFREQ_DL	(1U << 1)
  #define SCHED_CPUFREQ_IOWAIT	(1U << 2)
  
  #define SCHED_CPUFREQ_RT_DL	(SCHED_CPUFREQ_RT | SCHED_CPUFREQ_DL)
  
  #ifdef CONFIG_CPU_FREQ
  struct update_util_data {
         void (*func)(struct update_util_data *data, u64 time, unsigned int flags);
  };
  
  void cpufreq_add_update_util_hook(int cpu, struct update_util_data *data,
                         void (*func)(struct update_util_data *data, u64 time,
  				    unsigned int flags));
  void cpufreq_remove_update_util_hook(int cpu);
  #endif /* CONFIG_CPU_FREQ */
  
  #endif /* _LINUX_SCHED_CPUFREQ_H */
  