kernel/include/linux/delay.h
.. .. @@ -84,10 +84,4 @@ 84 84 msleep(DIV_ROUND_UP(usecs, 1000)); 85 85 } 86 86 87 -#ifdef CONFIG_PREEMPT_RT88 -extern void cpu_chill(void);89 -#else90 -# define cpu_chill() cpu_relax()91 -#endif92 -93 87 #endif /* defined(_LINUX_DELAY_H) */