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_WALT (1U << 1)
13 #define SCHED_CPUFREQ_CONTINUE (1U << 2)
14 #define SCHED_CPUFREQ_FORCE_UPDATE (1U << 3)
15
16 #ifdef CONFIG_CPU_FREQ
17 struct cpufreq_policy;
18
19 struct update_util_data {
20 void (*func)(struct update_util_data *data, u64 time, unsigned int flags);
21 };
22
23 void cpufreq_add_update_util_hook(int cpu, struct update_util_data *data,
24 void (*func)(struct update_util_data *data, u64 time,
25 unsigned int flags));
26 void cpufreq_remove_update_util_hook(int cpu);
27 bool cpufreq_this_cpu_can_update(struct cpufreq_policy *policy);
28
map_util_freq(unsigned long util,unsigned long freq,unsigned long cap)29 static inline unsigned long map_util_freq(unsigned long util,
30 unsigned long freq, unsigned long cap)
31 {
32 return (freq + (freq >> 2)) * util / cap;
33 }
34 #endif /* CONFIG_CPU_FREQ */
35
36 #endif /* _LINUX_SCHED_CPUFREQ_H */
37