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authorIngo Molnar <mingo@elte.hu>2009-01-11 04:45:50 +0100
committerIngo Molnar <mingo@elte.hu>2009-01-11 04:45:50 +0100
commite8b722f487589a1f60ca27adc695494f188d404e (patch)
treebe3897dceb9b7c0949a8917ab11eea2752375e3b /include/linux/kernel.h
parentsparseirq: make for_each_irq_desc() more robust (diff)
parentLinux 2.6.29-rc1 (diff)
Merge commit 'v2.6.29-rc1' into irq/urgent
Diffstat (limited to 'include/linux/kernel.h')
-rw-r--r--include/linux/kernel.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 6b8e2027165e..343df9ef2412 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -476,6 +476,12 @@ static inline char *pack_hex_byte(char *buf, u8 byte)
__val = __val < __min ? __min: __val; \
__val > __max ? __max: __val; })
+
+/*
+ * swap - swap value of @a and @b
+ */
+#define swap(a, b) ({ typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; })
+
/**
* container_of - cast a member of a structure out to the containing structure
* @ptr: the pointer to the member.