#ifndef _TIMEKEEPING_INTERNAL_H#define _TIMEKEEPING_INTERNAL_H/* * timekeeping debug functions */#include <linux/clocksource.h>#include <linux/time.h> #ifdef CONFIG_DEBUG_FSextern void tk_debug_account_sleep_time(struct timespec64 *t);#else#define tk_debug_account_sleep_time(x)#endif #ifdef CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLEstatic inline cycle_t clocksource_delta(cycle_t now, cycle_t last, cycle_t mask){	cycle_t ret = (now - last) & mask; 	return (s64) ret > 0 ? ret : 0;}#elsestatic inline cycle_t clocksource_delta(cycle_t now, cycle_t last, cycle_t mask){	return (now - last) & mask;}#endif #endif /* _TIMEKEEPING_INTERNAL_H */