[patch 01/15] Generic Mutex Subsystem, add-atomic-xchg-i386.patch
From: Ingo Molnar
Date: Sun Dec 18 2005 - 20:35:03 EST
add atomic_cmpxchg() to i386. Needed by the new mutex code.
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
----
include/asm-i386/atomic.h | 1 +
1 files changed, 1 insertion(+)
Index: linux/include/asm-i386/atomic.h
===================================================================
--- linux.orig/include/asm-i386/atomic.h
+++ linux/include/asm-i386/atomic.h
@@ -216,6 +216,7 @@ static __inline__ int atomic_sub_return(
}
#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
* atomic_add_unless - add unless the number is a given value
-
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