diff options
| author | Agustina Arzille <avarzille@riseup.net> | 2017-05-05 04:01:13 -1000 |
|---|---|---|
| committer | Richard Braun <rbraun@sceen.net> | 2017-05-09 21:17:58 +0200 |
| commit | bcbe8dc991a9ec63f30d50ed4cca89fd9e6b7ff7 (patch) | |
| tree | 389517510b8d19082d02f36453dbf68356b548fb /kern/spinlock_i.h | |
| parent | b5864f82b9c0d8ea2e825e7d86bd8cdeb825f870 (diff) | |
Replace sequential consistency with more efficient orders
Diffstat (limited to 'kern/spinlock_i.h')
| -rw-r--r-- | kern/spinlock_i.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kern/spinlock_i.h b/kern/spinlock_i.h index 444ced94..45018033 100644 --- a/kern/spinlock_i.h +++ b/kern/spinlock_i.h @@ -41,7 +41,7 @@ spinlock_lock_fast(struct spinlock *lock) { unsigned int prev; - prev = atomic_cas_seq_cst(&lock->value, SPINLOCK_UNLOCKED, SPINLOCK_LOCKED); + prev = atomic_cas_acquire(&lock->value, SPINLOCK_UNLOCKED, SPINLOCK_LOCKED); if (unlikely(prev != SPINLOCK_UNLOCKED)) { return ERROR_BUSY; @@ -55,7 +55,7 @@ spinlock_unlock_fast(struct spinlock *lock) { unsigned int prev; - prev = atomic_cas_seq_cst(&lock->value, SPINLOCK_LOCKED, SPINLOCK_UNLOCKED); + prev = atomic_cas_release(&lock->value, SPINLOCK_LOCKED, SPINLOCK_UNLOCKED); if (unlikely(prev != SPINLOCK_LOCKED)) { return ERROR_BUSY; |