summaryrefslogtreecommitdiff
path: root/include/linux/log2.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/log2.h')
-rw-r--r--include/linux/log2.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/log2.h b/include/linux/log2.h
index 1366cb688a6d..2eac3fc9303d 100644
--- a/include/linux/log2.h
+++ b/include/linux/log2.h
@@ -255,4 +255,18 @@ int __bits_per(unsigned long n)
) : \
__bits_per(n) \
)
+
+/**
+ * max_pow_of_two_factor - return highest power-of-2 factor
+ * @n: parameter
+ *
+ * find highest power-of-2 which is evenly divisible into n.
+ * 0 is returned for n == 0 or 1.
+ */
+static inline __attribute__((const))
+unsigned int max_pow_of_two_factor(unsigned int n)
+{
+ return n & -n;
+}
+
#endif /* _LINUX_LOG2_H */