Create default call rcu data upon per-cpu call-rcu teardown

[urcu.git] / urcu-call-rcu-impl.h

diff --git a/urcu-call-rcu-impl.h b/urcu-call-rcu-impl.h
index ae93468d8beb4e9fb9167a4dcc5b462892f3d9a2..3e947af2fd84bfd6c6843788d9f31a5ff720b876 100644 (file)
--- a/urcu-call-rcu-impl.h
+++ b/urcu-call-rcu-impl.h
@@ -522,8 +522,13 @@ int create_all_cpu_call_rcu_data(unsigned long flags)
                }
                call_rcu_unlock(&call_rcu_mutex);
                if ((ret = set_cpu_call_rcu_data(i, crdp)) != 0) {
-                       /* FIXME: Leaks crdp for now. */
-                       return ret; /* Can happen on race. */
+                       call_rcu_data_free(crdp);
+
+                       /* it has been created by other thread */
+                       if (ret == -EEXIST)
+                               continue;
+
+                       return ret;
                }
        }
        return 0;
@@ -604,6 +609,8 @@ void call_rcu_data_free(struct call_rcu_data *crdp)
                _CMM_STORE_SHARED(crdp->cbs.head, NULL);
                cbs_tail = (struct cds_wfq_node **)
                        uatomic_xchg(&crdp->cbs.tail, &crdp->cbs.head);
+               /* Create default call rcu data if need be */
+               (void) get_default_call_rcu_data();
                cbs_endprev = (struct cds_wfq_node **)
                        uatomic_xchg(&default_call_rcu_data, cbs_tail);
                *cbs_endprev = cbs;