include/asm-ppc64/timex.h

   1 /*
   2  * linux/include/asm-ppc/timex.h
   3  *
   4  * PPC64 architecture timex specifications
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  */
  11 #ifndef _ASMPPC64_TIMEX_H
  12 #define _ASMPPC64_TIMEX_H
  13
  14 #define CLOCK_TICK_RATE 1193180 /* Underlying HZ */
  15
  16 typedef unsigned long cycles_t;
  17
  18 static inline cycles_t get_cycles(void)
  19 {
  20         cycles_t ret;
  21
  22         __asm__ __volatile__("mftb %0" : "=r" (ret) : );
  23         return ret;
  24 }
  25
  26 #endif