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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [include/] [asm-alpha/] [timex.h] - Rev 1275

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/*
 * linux/include/asm-alpha/timex.h
 *
 * ALPHA architecture timex specifications
 */
#ifndef _ASMALPHA_TIMEX_H
#define _ASMALPHA_TIMEX_H
 
#define CLOCK_TICK_RATE	1193180 /* Underlying HZ */
 
/*
 * Standard way to access the cycle counter.
 * Currently only used on SMP for scheduling.
 *
 * Only the low 32 bits are available as a continuously counting entity. 
 * But this only means we'll force a reschedule every 8 seconds or so,
 * which isn't an evil thing.
 */
 
typedef unsigned int cycles_t;
 
static inline cycles_t get_cycles (void)
{
	cycles_t ret;
	__asm__ __volatile__ ("rpcc %0" : "=r"(ret));
	return ret;
}
 
#define vxtime_lock()		do {} while (0)
#define vxtime_unlock()		do {} while (0)
 
#endif
 

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