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 update_util_data { 16 void (*func)(struct update_util_data *data, u64 time, unsigned int flags); 17 }; 18 19 void cpufreq_add_update_util_hook(int cpu, struct update_util_data *data, 20 void (*func)(struct update_util_data *data, u64 time, 21 unsigned int flags)); 22 void cpufreq_remove_update_util_hook(int cpu); 23 24 static inline unsigned long map_util_freq(unsigned long util, 25 unsigned long freq, unsigned long cap) 26 { 27 return (freq + (freq >> 2)) * util / cap; 28 } 29 #endif /* CONFIG_CPU_FREQ */ 30 31 #endif /* _LINUX_SCHED_CPUFREQ_H */ 32