[PATCH v7 1/6] MIPS: define local_xchg from xchg_local to atomic_long_xchg

[Deng-Cheng Zhu <dengcheng.zhu@gmail.com>]

Perf-events is now using local_t helper functions internally. There is a
use of local_xchg(). On MIPS, this is defined to xchg_local() which is
missing in asm/system.h. This patch re-defines local_xchg() in asm/local.h
to atomic_long_xchg(). Then Perf-events can pass the build.

Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
---
 arch/mips/include/asm/local.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/mips/include/asm/local.h b/arch/mips/include/asm/local.h
index bdcdef0..4d090a0 100644
--- a/arch/mips/include/asm/local.h
+++ b/arch/mips/include/asm/local.h
@@ -117,7 +117,7 @@ static __inline__ long local_sub_return(long i, local_t * l)
 
 #define local_cmpxchg(l, o, n) \
        ((long)cmpxchg_local(&((l)->a.counter), (o), (n)))
-#define local_xchg(l, n) (xchg_local(&((l)->a.counter), (n)))
+#define local_xchg(l, n) atomic_long_xchg((&(l)->a), (n))
 
 /**
  * local_add_unless - add unless the number is a given value
-- 
1.7.0.4