include/asm/timex.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  *  arch/arm/include/asm/timex.h
0004  *
0005  *  Copyright (C) 1997,1998 Russell King
0006  *
0007  *  Architecture Specific TIME specifications
0008  */
0009 #ifndef _ASMARM_TIMEX_H
0010 #define _ASMARM_TIMEX_H
0011
0012 typedef unsigned long cycles_t;
0013 #define get_cycles()    ({ cycles_t c; read_current_timer(&c) ? 0 : c; })
0014 #define random_get_entropy() (((unsigned long)get_cycles()) ?: random_get_entropy_fallback())
0015
0016 #endif