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-rw-r--r--include/linux/kernel.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 3f2644cf6..5b6b44839 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -257,5 +257,10 @@ static inline char *hex_byte_pack_upper(char *buf, u8 byte)
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - offsetof(type,member) );})
+/*
+ * swap - swap value of @a and @b
+ */
+#define swap(a, b) \
+ do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0)
#endif /* _LINUX_KERNEL_H */