| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | #ifndef _LINUX_SCHED_CPUFREQ_H |
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| 3 | #define _LINUX_SCHED_CPUFREQ_H |
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| 4 | |
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| 5 | #include <linux/types.h> |
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| 6 | |
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| 7 | /* |
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| 8 | * Interface between cpufreq drivers and the scheduler: |
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| 9 | */ |
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| 10 | |
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| 11 | #define SCHED_CPUFREQ_IOWAIT (1U << 0) |
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| 12 | |
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| 13 | #ifdef CONFIG_CPU_FREQ |
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| 14 | struct cpufreq_policy; |
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| 15 | |
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| 16 | struct update_util_data { |
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| 17 | void (*func)(struct update_util_data *data, u64 time, unsigned int flags); |
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| 18 | }; |
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| 19 | |
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| 20 | void cpufreq_add_update_util_hook(int cpu, struct update_util_data *data, |
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| 21 | void (*func)(struct update_util_data *data, u64 time, |
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| 22 | unsigned int flags)); |
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| 23 | void cpufreq_remove_update_util_hook(int cpu); |
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| 24 | bool cpufreq_this_cpu_can_update(struct cpufreq_policy *policy); |
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| 25 | |
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| 26 | static inline unsigned long map_util_freq(unsigned long util, |
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| 27 | unsigned long freq, unsigned long cap) |
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| 28 | { |
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| 29 | return freq * util / cap; |
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| 30 | } |
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| 31 | |
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| 32 | static inline unsigned long map_util_perf(unsigned long util) |
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| 33 | { |
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| 34 | return util + (util >> 2); |
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| 35 | } |
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| 36 | #endif /* CONFIG_CPU_FREQ */ |
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| 37 | |
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| 38 | #endif /* _LINUX_SCHED_CPUFREQ_H */ |
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| 39 | |
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