[tip:core/locking] arch: Move smp_mb__{before,after}_atomic_{inc, dec}.h into asm/atomic.h

[tip-bot for Peter Zijlstra]

Commit-ID: 1de7da377bd880ff23917f78924d0e908329d978
Gitweb: http://git.kernel.org/tip/1de7da377bd880ff23917f78924d0e908329d978
Author: Peter Zijlstra <pet...@infradead.org>
AuthorDate: Fri, 8 Nov 2013 12:01:59 +0100
Committer: Ingo Molnar <mi...@kernel.org>
CommitDate: Sun, 12 Jan 2014 10:37:14 +0100

arch: Move smp_mb__{before,after}_atomic_{inc,dec}.h into asm/atomic.h

Move the barriers functions that depend on the atomic implementation
into the atomic implementation.

Reviewed-by: Paul E. McKenney <pau...@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra <pet...@infradead.org>
Acked-by: Vineet Gupta <vgu...@synopsys.com> [for arch/arc bits]
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: Linus Torvalds <torv...@linux-foundation.org>
Cc: Andrew Morton <ak...@linux-foundation.org>
Cc: Thomas Gleixner <tg...@linutronix.de>
Cc: Paul E. McKenney <pau...@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/201312131506...@infradead.org
Signed-off-by: Ingo Molnar <mi...@kernel.org>
---
arch/arc/include/asm/atomic.h | 5 +++++
arch/arc/include/asm/barrier.h | 5 -----
arch/hexagon/include/asm/atomic.h | 6 +++++-
arch/hexagon/include/asm/barrier.h | 4 ----
4 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/arch/arc/include/asm/atomic.h b/arch/arc/include/asm/atomic.h
index 83f03ca..03e494f 100644
--- a/arch/arc/include/asm/atomic.h
+++ b/arch/arc/include/asm/atomic.h
@@ -190,6 +190,11 @@ static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)

#endif /* !CONFIG_ARC_HAS_LLSC */

+#define smp_mb__before_atomic_dec() barrier()
+#define smp_mb__after_atomic_dec() barrier()
+#define smp_mb__before_atomic_inc() barrier()
+#define smp_mb__after_atomic_inc() barrier()
+
/**
* __atomic_add_unless - add unless the number is a given value
* @v: pointer of type atomic_t
diff --git a/arch/arc/include/asm/barrier.h b/arch/arc/include/asm/barrier.h
index f6cb7c4..c32245c 100644
--- a/arch/arc/include/asm/barrier.h
+++ b/arch/arc/include/asm/barrier.h
@@ -30,11 +30,6 @@
#define smp_wmb() barrier()
#endif

-#define smp_mb__before_atomic_dec() barrier()
-#define smp_mb__after_atomic_dec() barrier()
-#define smp_mb__before_atomic_inc() barrier()
-#define smp_mb__after_atomic_inc() barrier()
-
#define smp_read_barrier_depends() do { } while (0)

#endif
diff --git a/arch/hexagon/include/asm/atomic.h b/arch/hexagon/include/asm/atomic.h
index 8a64ff2..7aae4cb 100644
--- a/arch/hexagon/include/asm/atomic.h
+++ b/arch/hexagon/include/asm/atomic.h
@@ -160,8 +160,12 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
#define atomic_sub_and_test(i, v) (atomic_sub_return(i, (v)) == 0)
#define atomic_add_negative(i, v) (atomic_add_return(i, (v)) < 0)

-
#define atomic_inc_return(v) (atomic_add_return(1, v))
#define atomic_dec_return(v) (atomic_sub_return(1, v))

+#define smp_mb__before_atomic_dec() barrier()
+#define smp_mb__after_atomic_dec() barrier()
+#define smp_mb__before_atomic_inc() barrier()
+#define smp_mb__after_atomic_inc() barrier()
+
#endif
diff --git a/arch/hexagon/include/asm/barrier.h b/arch/hexagon/include/asm/barrier.h
index 1041a8e..4e863da 100644
--- a/arch/hexagon/include/asm/barrier.h
+++ b/arch/hexagon/include/asm/barrier.h
@@ -29,10 +29,6 @@
#define smp_read_barrier_depends() barrier()
#define smp_wmb() barrier()
#define smp_mb() barrier()
-#define smp_mb__before_atomic_dec() barrier()
-#define smp_mb__after_atomic_dec() barrier()
-#define smp_mb__before_atomic_inc() barrier()
-#define smp_mb__after_atomic_inc() barrier()

/* Set a value and use a memory barrier. Used by the scheduler somewhere. */
#define set_mb(var, value) \
--
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