tree fb391da915bdae9f933b8170ff61aa43c85ef9ae
parent 0fdf86754f70e813845af4abaa805165ce57a0bb
author Peter Zijlstra <a.p.zijlstra@chello.nl> 1265032987 +0100
committer H. Peter Anvin <hpa@zytor.com> 1270594331 -0700

bitops: Optimize hweight() by making use of compile-time evaluation

Rename the extisting runtime hweight() implementations to
__arch_hweight(), rename the compile-time versions to __const_hweight()
and then have hweight() pick between them.

Suggested-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20100318111929.GB11152@aftab>
Acked-by: H. Peter Anvin <hpa@zytor.com>
LKML-Reference: <1265028224.24455.154.camel@laptop>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>