arch/arm/include/asm/timex.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  *  arch/arm/include/asm/timex.h
   4  *
   5  *  Copyright (C) 1997,1998 Russell King
   6  *
   7  *  Architecture Specific TIME specifications
   8  */
   9 #ifndef _ASMARM_TIMEX_H
  10 #define _ASMARM_TIMEX_H
  11
  12 typedef unsigned long cycles_t;
  13 #define get_cycles()    ({ cycles_t c; read_current_timer(&c) ? 0 : c; })
  14 #define random_get_entropy() (((unsigned long)get_cycles()) ?: random_get_entropy_fallback())
  15
  16 #endif