include/asm-nios2nommu/preem_latency.h

   1 #ifndef _ASM_PREEM_LATENCY_H
   2 #define _ASM_PREEM_LATENCY_H
   3
   4 /*--------------------------------------------------------------------
   5  *
   6  * include/asm-nios2nommu/preem_latency.h
   7  *
   8  * timing support for preempt-stats patch
   9  *
  10  * Derived from various works, Alpha, ix86, M68K, Sparc, ...et al
  11  *
  12  * Copyright (C) 2004   Microtronix Datacom Ltd
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  *
  25  * Jan/20/2004          dgt         NiosII
  26  *
  27  ---------------------------------------------------------------------*/
  28
  29
  30 #include <asm/nios.h>
  31
  32 #define readclock(low) \
  33 do {\
  34         *(volatile unsigned long *)na_Counter_64_bit=1; \
  35         low=*(volatile unsigned long *)na_Counter_64_bit; \
  36 } while (0)
  37 #define readclock_init()
  38
  39 #endif /* _ASM_PREEM_LATENCY_H */