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