[PATCH 1/7] tools lib: Add bitmap_alloc function

Jiri Olsa
2016-08-01T18:13:45Z

Adding bitmap_alloc function to dynamically allocate bitmap.

Link: http://lkml.kernel.org/n/tip-ictn3ke5ewrzwyn8webfeai9@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/include/linux/bitmap.h | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/tools/include/linux/bitmap.h b/tools/include/linux/bitmap.h
index 28f5493da491..66ddd992e690 100644
--- a/tools/include/linux/bitmap.h
+++ b/tools/include/linux/bitmap.h
@@ -3,6 +3,7 @@

#include <string.h>
#include <linux/bitops.h>
+#include <stdlib.h>

#define DECLARE_BITMAP(name,bits) \
unsigned long name[BITS_TO_LONGS(bits)]
@@ -65,4 +66,13 @@ static inline int test_and_set_bit(int nr, unsigned long *addr)
return (old & mask) != 0;
}

+/**
+ * bitmap_alloc - Allocate bitmap
+ * @nr: Bit to set
+ */
+static inline unsigned long *bitmap_alloc(int nbits)
+{
+ return malloc(BITS_TO_LONGS(nbits) * sizeof(unsigned long));
+}
+
#endif /* _PERF_BITOPS_H */
--
2.4.11