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kernel/linux-rt-4.4.41/arch/openrisc/include/asm/timex.h 884 Bytes
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  /*
   * OpenRISC Linux
   *
   * Linux architectural port borrowing liberally from similar works of
   * others.  All original copyrights apply as per the original source
   * declaration.
   *
   * OpenRISC implementation:
   * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   */
  
  #ifndef __ASM_OPENRISC_TIMEX_H
  #define __ASM_OPENRISC_TIMEX_H
  
  #define get_cycles get_cycles
  
  #include <asm-generic/timex.h>
  #include <asm/spr.h>
  #include <asm/spr_defs.h>
  
  static inline cycles_t get_cycles(void)
  {
  	return mfspr(SPR_TTCR);
  }
  
  /* This isn't really used any more */
  #define CLOCK_TICK_RATE 1000
  
  #define ARCH_HAS_READ_CURRENT_TIMER
  
  #endif