- smp_read_barrier_depends();
- while (!list_empty(&q->list)) {
- unsigned int data_flags;
-
- spin_lock(&q->lock);
- list_replace_init(&q->list, &list);
- spin_unlock(&q->lock);
-
- while (!list_empty(&list)) {
- struct call_single_data *data;
-
- data = list_entry(list.next, struct call_single_data,
- list);
- list_del(&data->list);
-
- /*
- * 'data' can be invalid after this call if
- * flags == 0 (when called through
- * generic_exec_single(), so save them away before
- * making the call.
- */
- data_flags = data->flags;
-
- data->func(data->info);
-
- if (data_flags & CSD_FLAG_WAIT) {
- smp_wmb();
- data->flags &= ~CSD_FLAG_WAIT;
- } else if (data_flags & CSD_FLAG_ALLOC)
- kfree(data);
- }
+ WARN_ON_ONCE(!cpu_online(smp_processor_id()));
+
+ spin_lock(&q->lock);
+ list_replace_init(&q->list, &list);
+ spin_unlock(&q->lock);
+
+ while (!list_empty(&list)) {
+ struct call_single_data *data;
+
+ data = list_entry(list.next, struct call_single_data, list);
+ list_del(&data->list);
+
+ /*
+ * 'data' can be invalid after this call if flags == 0
+ * (when called through generic_exec_single()),
+ * so save them away before making the call:
+ */
+ data_flags = data->flags;
+
+ data->func(data->info);
+