Re: [PATCH] x86: Add optimized popcnt variants

From: Peter Zijlstra
Date: Tue Mar 09 2010 - 10:51:12 EST


On Tue, 2010-03-09 at 16:36 +0100, Borislav Petkov wrote:
> > On 02/27/2010 12:28 AM, Borislav Petkov wrote:
> > > Yeah, let's give it another round of testing and queue it for .35 -
> > > AFAIR Ingo runs also a wide testing effort so it spending another cycle
> > > in -tip and being hammered on by us could give us a bit more certainty.
> > >
> >
> > Yes, if we can get into -tip then we'll get more test coverage, so I'll
> > queue it up for .35 as soon as the merge window closes. Please remind
> > me if I forget.
>
> Hi Peter,
>
> I see that you've added the HWEIGHT-capitalized interfaces for
> compile-time constants with fce877e3. Which means, the bits in
> <include/asm-generic/bitops/const_hweight.h> from your original patch at
> http://lkml.org/lkml/2010/2/4/119 need changing (or have changed already
> but I've missed them).
>
> IOW, where can I get the current version of that last patch so that I can
> base my __arch_hweightXX stuff ontop of it for testing?

Should all be fine as it is, that patch
( http://lkml.org/lkml/2010/2/4/119 ) is against a kernel with fce877e3
in, I've just checked and it still applies to tip/master as of this
writing (although it grew a single 2 line offset for 1 hunk).



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