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 13 #ifdef CONFIG_CPU_FREQ 14 struct cpufreq_policy; 15 16 struct update_util_data { 17 void (*func)(struct update_util_data *data, u64 time, unsigned int flags); 18 }; 19 20 void cpufreq_add_update_util_hook(int cpu, struct update_util_data *data, 21 void (*func)(struct update_util_data *data, u64 time, 22 unsigned int flags)); 23 void cpufreq_remove_update_util_hook(int cpu); 24 bool cpufreq_this_cpu_can_update(struct cpufreq_policy *policy); 25 map_util_freq(unsigned long util,unsigned long freq,unsigned long cap)26 static inline unsigned long map_util_freq(unsigned long util, 27 unsigned long freq, unsigned long cap) 28 { 29 return freq * util / cap; 30 } 31 map_util_perf(unsigned long util)32 static inline unsigned long map_util_perf(unsigned long util) 33 { 34 return util + (util >> 2); 35 } 36 #endif /* CONFIG_CPU_FREQ */ 37 38 #endif /* _LINUX_SCHED_CPUFREQ_H */ 39