diff options
Diffstat (limited to 'sysdeps/hppa/nptl/pthread_spin_init.c')
| -rw-r--r-- | sysdeps/hppa/nptl/pthread_spin_init.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/sysdeps/hppa/nptl/pthread_spin_init.c b/sysdeps/hppa/nptl/pthread_spin_init.c index c83669eb91..b0ff78917b 100644 --- a/sysdeps/hppa/nptl/pthread_spin_init.c +++ b/sysdeps/hppa/nptl/pthread_spin_init.c @@ -20,9 +20,9 @@ int pthread_spin_init (pthread_spinlock_t *lock, int pshared) { - int tmp = 0; - /* This should be a memory barrier to newer compilers */ - __asm__ __volatile__ ("stw,ma %1,0(%0)" - : : "r" (lock), "r" (tmp) : "memory"); + /* The LWS-CAS operation on hppa is a synthetic atomic operation + that doesn't provide the type of coherency that we need. Therefore + we force that coherency by using LWS-CAS again. */ + atomic_exchange_rel (lock, 0); return 0; } |