diff options
| author | Peter Zijlstra <[email protected]> | 2016-05-18 12:42:21 +0200 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2016-06-16 10:48:35 +0200 |
| commit | 86a3b5f34fc1fb307abef4fde76bebd3edce0324 (patch) | |
| tree | 4759a14c987724495da3a79b257ccfd321d0c206 | |
| parent | f9852b74bec0117b888da39d070c323ea1cb7f4c (diff) | |
locking/atomic, arch/rwsem: Employ atomic_long_fetch_add()
Now that we have fetch_add() we can stop using add_return() - val.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Jason Low <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Waiman Long <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Ingo Molnar <[email protected]>
| -rw-r--r-- | kernel/locking/rwsem-xadd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/locking/rwsem-xadd.c b/kernel/locking/rwsem-xadd.c index 2031281bb940..447e08de1fab 100644 --- a/kernel/locking/rwsem-xadd.c +++ b/kernel/locking/rwsem-xadd.c @@ -153,7 +153,7 @@ __rwsem_mark_wake(struct rw_semaphore *sem, if (wake_type != RWSEM_WAKE_READ_OWNED) { adjustment = RWSEM_ACTIVE_READ_BIAS; try_reader_grant: - oldcount = atomic_long_add_return(adjustment, &sem->count) - adjustment; + oldcount = atomic_long_fetch_add(adjustment, &sem->count); if (unlikely(oldcount < RWSEM_WAITING_BIAS)) { /* |