get_cyles()

[Shirley Ma]

Doesn't ppc64 supports get_cycles() correctly?
I used below function to get_cycles(), it seems not right.

t1 = get_cycles();
t2 = get_cycles();

t2-t1 is huge.

static inline cycles_t get_cycles(void)
{
        cycles_t ret;

        __asm__ __volatile__("mftb %0" : "=r" (ret) : );
        return ret;
}

Shirley Ma
IBM Linux Technology Center
15300 SW Koll Parkway
Beaverton, OR 97006-6063
Phone(Fax): (503) 578-7638

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