1 #ifndef _TIMEKEEPING_INTERNAL_H 2 #define _TIMEKEEPING_INTERNAL_H 3 /* 4 * timekeeping debug functions 5 */ 6 #include <linux/clocksource.h> 7 #include <linux/time.h> 8 9 #ifdef CONFIG_DEBUG_FS 10 extern void tk_debug_account_sleep_time(struct timespec64 *t); 11 #else 12 #define tk_debug_account_sleep_time(x) 13 #endif 14 15 #ifdef CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE 16 static inline cycle_t clocksource_delta(cycle_t now, cycle_t last, cycle_t mask) 17 { 18 cycle_t ret = (now - last) & mask; 19 20 return (s64) ret > 0 ? ret : 0; 21 } 22 #else 23 static inline cycle_t clocksource_delta(cycle_t now, cycle_t last, cycle_t mask) 24 { 25 return (now - last) & mask; 26 } 27 #endif 28 29 #endif /* _TIMEKEEPING_INTERNAL_H */ 30