1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_POWERPC_TIMEX_H 3 #define _ASM_POWERPC_TIMEX_H 4 5 #ifdef __KERNEL__ 6 7 /* 8 * PowerPC architecture timex specifications 9 */ 10 11 #include <asm/cputable.h> 12 #include <asm/reg.h> 13 14 #define CLOCK_TICK_RATE 1024000 /* Underlying HZ */ 15 16 typedef unsigned long cycles_t; 17 18 static inline cycles_t get_cycles(void) 19 { 20 if (IS_ENABLED(CONFIG_BOOK3S_601)) 21 return 0; 22 23 return mftb(); 24 } 25 26 #endif /* __KERNEL__ */ 27 #endif /* _ASM_POWERPC_TIMEX_H */ 28