|  | /* SPDX-License-Identifier: GPL-2.0 */ | 
|  | #ifndef _LINUX_SCHED_NOHZ_H | 
|  | #define _LINUX_SCHED_NOHZ_H | 
|  |  | 
|  | /* | 
|  | * This is the interface between the scheduler and nohz/dynticks: | 
|  | */ | 
|  |  | 
|  | #if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON) | 
|  | extern void nohz_balance_enter_idle(int cpu); | 
|  | extern int get_nohz_timer_target(void); | 
|  | #else | 
|  | static inline void nohz_balance_enter_idle(int cpu) { } | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_NO_HZ_COMMON | 
|  | void calc_load_nohz_start(void); | 
|  | void calc_load_nohz_remote(struct rq *rq); | 
|  | void calc_load_nohz_stop(void); | 
|  | #else | 
|  | static inline void calc_load_nohz_start(void) { } | 
|  | static inline void calc_load_nohz_remote(struct rq *rq) { } | 
|  | static inline void calc_load_nohz_stop(void) { } | 
|  | #endif /* CONFIG_NO_HZ_COMMON */ | 
|  |  | 
|  | #if defined(CONFIG_NO_HZ_COMMON) && defined(CONFIG_SMP) | 
|  | extern void wake_up_nohz_cpu(int cpu); | 
|  | #else | 
|  | static inline void wake_up_nohz_cpu(int cpu) { } | 
|  | #endif | 
|  |  | 
|  | #endif /* _LINUX_SCHED_NOHZ_H */ |