Merge tag 'gvt-fixes-2020-03-10' of https://github.com/intel/gvt-linux into drm-intel...
[linux-2.6-microblaze.git] / include / linux / sched / cpufreq.h
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 + (freq >> 2)) * util / cap;
30 }
31 #endif /* CONFIG_CPU_FREQ */
32
33 #endif /* _LINUX_SCHED_CPUFREQ_H */