On Thu, 2010-02-04 at 16:54 +0100, Borislav Petkov wrote:
> On Thu, Feb 04, 2010 at 04:13:52PM +0100, Peter Zijlstra wrote:
> > hweight_long() isn't an arch primitive, only __arch_hweight{8,16,32,64}
> > are.
>
> Yeah, I'm still looking for the proper location. hweight_long() is the
> generic version so do we want to do the
>
> #ifndef __HAVE_ARCH_POPCNT
> static inline unsigned long hweight_long(unsigned long w)
> ....
>
> #endif
>
> thing and define a x86-specific version?
No, just don't touch hweight_long(), simply provide
__arch_hweight{8,16,32,64} and all will be well.
hweight_long() is provided by <include/linux.h> and is constructed from
height32() and hweight64() depending on the actual word size.
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