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
14struct cpufreq_policy;
15
16struct update_util_data {
17 void (*func)(struct update_util_data *data, u64 time, unsigned int flags);
18};
19
20void 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));
23void cpufreq_remove_update_util_hook(int cpu);
24bool cpufreq_this_cpu_can_update(struct cpufreq_policy *policy);
25
26static inline unsigned long map_util_freq(unsigned long util,
27 unsigned long freq, unsigned long cap)
28{
29 return freq * util / cap;
30}
31
32static 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