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 | |
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 | |
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 | |