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
map_util_freq(unsigned long util,unsigned long freq,unsigned long cap)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
