AcoSail/kernel_optimize_test
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qnx4: use hweight8

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Use hweight8 instead of counting for each bit

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Anders Larsen <al@alarsen.net>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Akinobu Mita 2009-12-15 16:48:24 -08:00 committed by Linus Torvalds
parent ca120b20c3
commit 868d64812a
1 changed files with 1 additions and 16 deletions
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17
fs/qnx4/bitmap.c
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@ -28,22 +28,7 @@ static void count_bits(register const char *bmPart, register int size,
}
do {
b = *bmPart++;
if ((b & 1) == 0)
tot++;
if ((b & 2) == 0)
tot++;
if ((b & 4) == 0)
tot++;
if ((b & 8) == 0)
tot++;
if ((b & 16) == 0)
tot++;
if ((b & 32) == 0)
tot++;
if ((b & 64) == 0)
tot++;
if ((b & 128) == 0)
tot++;
tot += 8 - hweight8(b);
size--;
} while (size != 0);
*tf = tot;