1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * linux/include/asm-alpha/timex.h 4 * 5 * ALPHA architecture timex specifications 6 */ 7 #ifndef _ASMALPHA_TIMEX_H 8 #define _ASMALPHA_TIMEX_H 9 10 /* 11 * Standard way to access the cycle counter. 12 * Currently only used on SMP for scheduling. 13 * 14 * Only the low 32 bits are available as a continuously counting entity. 15 * But this only means we'll force a reschedule every 8 seconds or so, 16 * which isn't an evil thing. 17 */ 18 19 typedef unsigned int cycles_t; 20 21 static inline cycles_t get_cycles (void) 22 { 23 cycles_t ret; 24 __asm__ __volatile__ ("rpcc %0" : "=r"(ret)); 25 return ret; 26 } 27 #define get_cycles get_cycles 28 29 #endif 30