diff options
Diffstat (limited to 'kernel/locking/mutex.c')
| -rw-r--r-- | kernel/locking/mutex.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/kernel/locking/mutex.c b/kernel/locking/mutex.c index dc3d6f2bbe2a..2670b84067d6 100644 --- a/kernel/locking/mutex.c +++ b/kernel/locking/mutex.c @@ -53,7 +53,7 @@ __mutex_init(struct mutex *lock, const char *name, struct lock_class_key *key) INIT_LIST_HEAD(&lock->wait_list); mutex_clear_owner(lock); #ifdef CONFIG_MUTEX_SPIN_ON_OWNER - lock->mcs_lock = NULL; + lock->osq = NULL; #endif debug_mutex_init(lock, name, key); @@ -403,7 +403,9 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass, if (!mutex_can_spin_on_owner(lock)) goto slowpath; - mcs_spin_lock(&lock->mcs_lock, &node); + if (!osq_lock(&lock->osq)) + goto slowpath; + for (;;) { struct task_struct *owner; @@ -442,7 +444,7 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass, } mutex_set_owner(lock); - mcs_spin_unlock(&lock->mcs_lock, &node); + osq_unlock(&lock->osq); preempt_enable(); return 0; } @@ -464,7 +466,7 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass, */ arch_mutex_cpu_relax(); } - mcs_spin_unlock(&lock->mcs_lock, &node); + osq_unlock(&lock->osq); slowpath: #endif spin_lock_mutex(&lock->wait_lock, flags); |