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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
15struct update_util_data {
16 void (*func)(struct update_util_data *data, u64 time, unsigned int flags);
17};
18
19void 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));
22void cpufreq_remove_update_util_hook(int cpu);
23
24static 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 */