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author | Jens Axboe <jens.axboe@oracle.com> | 2010-05-21 23:27:26 +0400 |
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committer | Jens Axboe <jens.axboe@oracle.com> | 2010-05-21 23:27:26 +0400 |
commit | ee9a3607fb03e804ddf624544105f4e34260c380 (patch) | |
tree | ce41b6e0fa10982a306f6c142a92dbf3c9961284 /tools/perf/util/bitmap.c | |
parent | b492e95be0ae672922f4734acf3f5d35c30be948 (diff) | |
parent | d515e86e639890b33a09390d062b0831664f04a2 (diff) | |
download | linux-ee9a3607fb03e804ddf624544105f4e34260c380.tar.xz |
Merge branch 'master' into for-2.6.35
Conflicts:
fs/ext3/fsync.c
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'tools/perf/util/bitmap.c')
-rw-r--r-- | tools/perf/util/bitmap.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/perf/util/bitmap.c b/tools/perf/util/bitmap.c new file mode 100644 index 000000000000..5e230acae1e9 --- /dev/null +++ b/tools/perf/util/bitmap.c @@ -0,0 +1,21 @@ +/* + * From lib/bitmap.c + * Helper functions for bitmap.h. + * + * This source code is licensed under the GNU General Public License, + * Version 2. See the file COPYING for more details. + */ +#include <linux/bitmap.h> + +int __bitmap_weight(const unsigned long *bitmap, int bits) +{ + int k, w = 0, lim = bits/BITS_PER_LONG; + + for (k = 0; k < lim; k++) + w += hweight_long(bitmap[k]); + + if (bits % BITS_PER_LONG) + w += hweight_long(bitmap[k] & BITMAP_LAST_WORD_MASK(bits)); + + return w; +} |