opal/common/ucx: use trylock in opal_common_progress

Signed-off-by: Xin Zhao <xinz@mellanox.com>

opal/mca/common/ucx/common_ucx_wpool.c

@@ -290,7 +290,7 @@ opal_common_ucx_wpool_progress(opal_common_ucx_wpool_t *wpool)
     /* Go over all active workers and progress them
      * TODO: may want to have some partitioning to progress only part of
      * workers */
-    opal_mutex_lock(&wpool->mutex);
+    if (!opal_mutex_trylock (&wpool->mutex)) {
         OPAL_LIST_FOREACH_SAFE(item, next, &wpool->active_workers,
                                _winfo_list_item_t) {
             opal_common_ucx_winfo_t *winfo = item->ptr;
@@ -306,8 +306,8 @@ opal_common_ucx_wpool_progress(opal_common_ucx_wpool_t *wpool)
             }
             opal_mutex_unlock(&winfo->mutex);
         }
-
         opal_mutex_unlock(&wpool->mutex);
+    }
 }
 
 static int