1 files changed, 31 insertions, 0 deletions

diff --git a/tools/lib/bitmap.c b/tools/lib/bitmap.c
new file mode 100644
index 000000000000..0a1adc1111fd
--- /dev/null
+++ b/tools/lib/bitmap.c
@@ -0,0 +1,31 @@
+/*
+ * 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;
+}
+
+void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
+                 const unsigned long *bitmap2, int bits)
+{
+        int k;
+        int nr = BITS_TO_LONGS(bits);
+
+        for (k = 0; k < nr; k++)
+                dst[k] = bitmap1[k] | bitmap2[k];
+}