36 lines
657 B
C
36 lines
657 B
C
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#include <stdio.h>
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#include <time.h>
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#include <sys/times.h>
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#include <sys/types.h>
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#include <minix/u64.h>
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#include <minix/config.h>
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#include <minix/const.h>
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#include <minix/minlib.h>
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#include <machine/archtypes.h>
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#include "sysutil.h"
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#ifndef CONFIG_MAX_CPUS
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#define CONFIG_MAX_CPUS 1
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#endif
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#define MICROHZ 1000000 /* number of micros per second */
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#define MICROSPERTICK(h) (MICROHZ/(h)) /* number of micros per HZ tick */
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static u32_t calib_hz = 600000000;
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u32_t tsc_64_to_micros(u64_t tsc)
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{
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u64_t tmp;
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tmp = tsc / calib_hz;
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return (u32_t) tmp;
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}
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u32_t tsc_to_micros(u32_t low, u32_t high)
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{
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return tsc_64_to_micros(make64(low, high));
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}
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