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