diff options
| author | Steven Rostedt <srostedt@redhat.com> | 2010-05-18 06:26:53 +0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2010-05-18 08:35:23 +0400 |
| commit | f0218b3e9974f06014b61be8987159f4a20e011e (patch) | |
| tree | 29a593c4d71ab18cb0c450a34e79bf6bea66877e /tools/perf/util/bitmap.c | |
| parent | 1eaa4787a774c4896518c81f24e8bccaa2244924 (diff) | |
| parent | 9d192e118a094087494997ea1c8a2faf39af38c5 (diff) | |
| download | linux-f0218b3e9974f06014b61be8987159f4a20e011e.tar.xz | |
Merge branch 'perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip into trace/tip/tracing/core-6
Conflicts:
include/trace/ftrace.h
kernel/trace/trace_kprobe.c
Acked-by: Masami Hiramatsu <mhiramat@redhat.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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; +} |