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hbitmap: Use non-bitops ctzl

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Both uses of ctz have already eliminated zero, and thus the difference
in edge conditions between the two routines is irrelevant.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Richard Henderson
2013-02-13 17:47:36 -08:00
committed by Blue Swirl
parent 72d81155d0
commit 18331e7c18
2 changed files with 4 additions and 2 deletions
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3
util/hbitmap.c
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@ -126,7 +126,8 @@ unsigned long hbitmap_iter_skip_words(HBitmapIter *hbi)
* The index of this word's least significant set bit provides
* the low-order bits.
*/
pos = (pos << BITS_PER_LEVEL) + bitops_ctzl(cur);
assert(cur);
pos = (pos << BITS_PER_LEVEL) + ctzl(cur);
hbi->cur[i] = cur & (cur - 1);
/* Set up next level for iteration. */