diff options
| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-07-14 18:35:23 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-08-04 08:49:21 -0700 |
| commit | 12d560f4ea87030667438a169912380be00cea4b (patch) | |
| tree | 3b60a7b97e849bd68573db48dd8608cb43f05694 /include/linux/spinlock.h | |
| parent | 3dbe43f6fba9f2a0e46e371733575a45704c22ab (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/linux/spinlock.h')
| -rw-r--r-- | include/linux/spinlock.h | 10 |
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. |