Relax memory order in opal_atomic_lock_init

devreal · devreal · commit 19178df96a73 · 2021-11-11T12:35:46.000-05:00
Initialization of a lock does not require sequential memory ordering
so relax it to memory_order_relaxed.

Signed-off-by: Joseph Schuchart &lt;schuchart@icl.utk.edu&gt;
diff --git a/opal/include/opal/sys/atomic_stdc.h b/opal/include/opal/sys/atomic_stdc.h
@@ -241,7 +241,7 @@ typedef atomic_flag opal_atomic_lock_t;
  */
 static inline void opal_atomic_lock_init(opal_atomic_lock_t *lock, bool value)
 {
-    atomic_flag_clear(lock);
+    atomic_flag_clear_explicit(lock, memory_order_relaxed);
 }
 
 static inline int opal_atomic_trylock(opal_atomic_lock_t *lock)

Original file line number	Diff line number	Diff line change
`@@ -241,7 +241,7 @@ typedef atomic_flag opal_atomic_lock_t;`
`241`	`241`	`*/`
`242`	`242`	`static inline void opal_atomic_lock_init(opal_atomic_lock_t *lock, bool value)`
`243`	`243`	`{`
`244`		`- atomic_flag_clear(lock);`
	`244`	`+ atomic_flag_clear_explicit(lock, memory_order_relaxed);`
`245`	`245`	`}`
`246`	`246`
`247`	`247`	`static inline int opal_atomic_trylock(opal_atomic_lock_t *lock)`