Re: [parisc-linux] Re: [PATCH 3/6] C-language equivalents ofinclude/asm-*/bitops.h

From: David S. Miller
Date: Sun Jan 29 2006 - 23:04:43 EST


From: Stuart Brady <sdbrady@xxxxxxxxxxxx>
Date: Sun, 29 Jan 2006 07:12:42 +0000

> There are versions of hweight*() for sparc64 which use POPC when
> ULTRA_HAS_POPULATION_COUNT is defined, but AFAICS, it's never defined.

That's right, the problem here is that no chips actually implement
the instruction in hardware, it is software emulated, ie. useless :-)
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