diff options
| author | Ingo Molnar | 2016-07-07 09:12:02 +0200 |
|---|---|---|
| committer | Ingo Molnar | 2016-07-07 09:12:02 +0200 |
| commit | 36e91aa2628e46c2146049eee8b9b7f773b0ffc3 (patch) | |
| tree | c14e756181dca4e4e06d6aa1b1299a5f4dc5bf3d /kernel/locking | |
| parent | 03e3c2b7edbe1e8758196b2c7843333eb328063d (diff) | |
| parent | b7271b9f3e18181559b96a610f4e42bdb04b07f5 (diff) | |
Merge branch 'locking/arch-atomic' into locking/core, because the topic is ready
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/locking')
| -rw-r--r-- | kernel/locking/qrwlock.c | 2 | ||||
| -rw-r--r-- | kernel/locking/qspinlock_paravirt.h | 4 | ||||
| -rw-r--r-- | kernel/locking/rwsem-xadd.c | 2 |
3 files changed, 4 insertions, 4 deletions
diff --git a/kernel/locking/qrwlock.c b/kernel/locking/qrwlock.c index fec082338668..19248ddf37ce 100644 --- a/kernel/locking/qrwlock.c +++ b/kernel/locking/qrwlock.c @@ -93,7 +93,7 @@ void queued_read_lock_slowpath(struct qrwlock *lock, u32 cnts) * that accesses can't leak upwards out of our subsequent critical * section in the case that the lock is currently held for write. */ - cnts = atomic_add_return_acquire(_QR_BIAS, &lock->cnts) - _QR_BIAS; + cnts = atomic_fetch_add_acquire(_QR_BIAS, &lock->cnts); rspin_until_writer_unlock(lock, cnts); /* diff --git a/kernel/locking/qspinlock_paravirt.h b/kernel/locking/qspinlock_paravirt.h index 21ede57f68b3..37649e69056c 100644 --- a/kernel/locking/qspinlock_paravirt.h +++ b/kernel/locking/qspinlock_paravirt.h @@ -112,12 +112,12 @@ static __always_inline int trylock_clear_pending(struct qspinlock *lock) #else /* _Q_PENDING_BITS == 8 */ static __always_inline void set_pending(struct qspinlock *lock) { - atomic_set_mask(_Q_PENDING_VAL, &lock->val); + atomic_or(_Q_PENDING_VAL, &lock->val); } static __always_inline void clear_pending(struct qspinlock *lock) { - atomic_clear_mask(_Q_PENDING_VAL, &lock->val); + atomic_andnot(_Q_PENDING_VAL, &lock->val); } static __always_inline int trylock_clear_pending(struct qspinlock *lock) 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)) { /* |