commit 4a6dae6d382e9edf3ff440b819e554ed706359bc
author Nick Piggin <nickpiggin@yahoo.com.au> Sun Nov 13 16:07:24 2005 -0800
committer Linus Torvalds <torvalds@g5.osdl.org> Sun Nov 13 18:14:16 2005 -0800
tree 2945a5095973e2ecf05b503d6deb859083045b8e
parent 53e86b91b7ae66d4c2757195cbd42e00d9199cf2

[PATCH] atomic: cmpxchg

Introduce an atomic_cmpxchg operation.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/asm-frv/atomic.h

diff --git a/include/asm-frv/atomic.h b/include/asm-frv/atomic.h
index e759684..55f06a0 100644
--- a/include/asm-frv/atomic.h
+++ b/include/asm-frv/atomic.h
@@ -414,4 +414,6 @@
 
 #endif
 
+#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new))
+
 #endif /* _ASM_ATOMIC_H */