1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef _LINUX_SCHED_CPUFREQ_H
3*4882a593Smuzhiyun #define _LINUX_SCHED_CPUFREQ_H
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun #include <linux/types.h>
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun /*
8*4882a593Smuzhiyun * Interface between cpufreq drivers and the scheduler:
9*4882a593Smuzhiyun */
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #define SCHED_CPUFREQ_IOWAIT (1U << 0)
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #ifdef CONFIG_CPU_FREQ
14*4882a593Smuzhiyun struct cpufreq_policy;
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun struct update_util_data {
17*4882a593Smuzhiyun void (*func)(struct update_util_data *data, u64 time, unsigned int flags);
18*4882a593Smuzhiyun };
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun void cpufreq_add_update_util_hook(int cpu, struct update_util_data *data,
21*4882a593Smuzhiyun void (*func)(struct update_util_data *data, u64 time,
22*4882a593Smuzhiyun unsigned int flags));
23*4882a593Smuzhiyun void cpufreq_remove_update_util_hook(int cpu);
24*4882a593Smuzhiyun bool cpufreq_this_cpu_can_update(struct cpufreq_policy *policy);
25*4882a593Smuzhiyun
map_util_freq(unsigned long util,unsigned long freq,unsigned long cap)26*4882a593Smuzhiyun static inline unsigned long map_util_freq(unsigned long util,
27*4882a593Smuzhiyun unsigned long freq, unsigned long cap)
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun return (freq + (freq >> 2)) * util / cap;
30*4882a593Smuzhiyun }
31*4882a593Smuzhiyun #endif /* CONFIG_CPU_FREQ */
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun #endif /* _LINUX_SCHED_CPUFREQ_H */
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