Messages in this thread | | | Date | Sat, 28 Aug 1999 11:57:33 -0700 | From | Richard Henderson <> | Subject | Re: udelay() possibly broken on Alpha. |
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On Sat, Aug 28, 1999 at 08:47:45PM +0200, Gerard Roudier wrote: > It seems that, on some Alpha machines, udelay() may sometimes execute up > to twice slower than expected. Given that the Alpha *delay() stuff is > based on inline functions and define's, it could well be that the > execution time of small loops depends on the actual address (boundary?) of > the loop code as for Pentia.
If it is EV6 machines that are seeing this, change
- __asm__ __volatile__(".align 3\n" + __asm__ __volatile__(".align 4\n"
and see if the problem clears up.
r~
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