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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2015-07-14 18:35:23 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2015-08-04 08:49:21 -0700
commit12d560f4ea87030667438a169912380be00cea4b (patch)
tree3b60a7b97e849bd68573db48dd8608cb43f05694 /include
parent3dbe43f6fba9f2a0e46e371733575a45704c22ab (diff)
rcu,locking: Privatize smp_mb__after_unlock_lock()
RCU is the only thing that uses smp_mb__after_unlock_lock(), and is likely the only thing that ever will use it, so this commit makes this macro private to RCU. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/spinlock.h10
1 files changed, 0 insertions, 10 deletions
diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h
index 0063b24b4f36..16c5ed5a627c 100644
--- a/include/linux/spinlock.h
+++ b/include/linux/spinlock.h
@@ -130,16 +130,6 @@ do { \
#define smp_mb__before_spinlock() smp_wmb()
#endif
-/*
- * Place this after a lock-acquisition primitive to guarantee that
- * an UNLOCK+LOCK pair act as a full barrier. This guarantee applies
- * if the UNLOCK and LOCK are executed by the same CPU or if the
- * UNLOCK and LOCK operate on the same lock variable.
- */
-#ifndef smp_mb__after_unlock_lock
-#define smp_mb__after_unlock_lock() do { } while (0)
-#endif
-
/**
* raw_spin_unlock_wait - wait until the spinlock gets unlocked
* @lock: the spinlock in question.

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