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-rw-r--r--kernel/kthread.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/kernel/kthread.c b/kernel/kthread.c
index 12695e68ed00..f874300dfce5 100644
--- a/kernel/kthread.c
+++ b/kernel/kthread.c
@@ -823,3 +823,26 @@ void kthread_flush_worker(struct kthread_worker *worker)
wait_for_completion(&fwork.done);
}
EXPORT_SYMBOL_GPL(kthread_flush_worker);
+
+/**
+ * kthread_destroy_worker - destroy a kthread worker
+ * @worker: worker to be destroyed
+ *
+ * Flush and destroy @worker. The simple flush is enough because the kthread
+ * worker API is used only in trivial scenarios. There are no multi-step state
+ * machines needed.
+ */
+void kthread_destroy_worker(struct kthread_worker *worker)
+{
+ struct task_struct *task;
+
+ task = worker->task;
+ if (WARN_ON(!task))
+ return;
+
+ kthread_flush_worker(worker);
+ kthread_stop(task);
+ WARN_ON(!list_empty(&worker->work_list));
+ kfree(worker);
+}
+EXPORT_SYMBOL(kthread_destroy_worker);