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Diffstat (limited to 'lib/libthr/thread/thr_umtx.c')
-rw-r--r--lib/libthr/thread/thr_umtx.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/libthr/thread/thr_umtx.c b/lib/libthr/thread/thr_umtx.c
index 7c59bb7..5af923d 100644
--- a/lib/libthr/thread/thr_umtx.c
+++ b/lib/libthr/thread/thr_umtx.c
@@ -112,10 +112,13 @@ __thr_umutex_timedlock(struct umutex *mtx, uint32_t id,
int
__thr_umutex_unlock(struct umutex *mtx, uint32_t id)
{
+#ifndef __ia64__
+ /* XXX this logic has a race-condition on ia64. */
if ((mtx->m_flags & (UMUTEX_PRIO_PROTECT | UMUTEX_PRIO_INHERIT)) == 0) {
atomic_cmpset_rel_32(&mtx->m_owner, id | UMUTEX_CONTESTED, UMUTEX_CONTESTED);
return _umtx_op_err(mtx, UMTX_OP_MUTEX_WAKE, 0, 0, 0);
}
+#endif /* __ia64__ */
return _umtx_op_err(mtx, UMTX_OP_MUTEX_UNLOCK, 0, 0, 0);
}
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