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/* With only one or two oddballs, we use the RTC as the ticker, selecting
11   the 32.768kHz reference clock, which nicely divides down to our HZ.  */
12#define CLOCK_TICK_RATE	32768
13
14/*
15 * Standard way to access the cycle counter.
16 * Currently only used on SMP for scheduling.
17 *
18 * Only the low 32 bits are available as a continuously counting entity.
19 * But this only means we'll force a reschedule every 8 seconds or so,
20 * which isn't an evil thing.
21 */
22
23typedef unsigned int cycles_t;
24
25static inline cycles_t get_cycles (void)
26{
27	cycles_t ret;
28	__asm__ __volatile__ ("rpcc %0" : "=r"(ret));
29	return ret;
30}
31#define get_cycles get_cycles
32
33#endif
34