1 files changed, 41 insertions, 0 deletions
diff --git a/include/linux/task_work.h b/include/linux/task_work.h
new file mode 100644
index 000000000..795ef5a68
--- /dev/null
+++ b/include/linux/task_work.h
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_TASK_WORK_H
+#define _LINUX_TASK_WORK_H
+
+#include <linux/list.h>
+#include <linux/sched.h>
+
+typedef void (*task_work_func_t)(struct callback_head *);
+
+static inline void
+init_task_work(struct callback_head *twork, task_work_func_t func)
+{
+	twork->func = func;
+}
+
+enum task_work_notify_mode {
+	TWA_NONE,
+	TWA_RESUME,
+	TWA_SIGNAL,
+	TWA_SIGNAL_NO_IPI,
+};
+
+static inline bool task_work_pending(struct task_struct *task)
+{
+	return READ_ONCE(task->task_works);
+}
+
+int task_work_add(struct task_struct *task, struct callback_head *twork,
+			enum task_work_notify_mode mode);
+
+struct callback_head *task_work_cancel_match(struct task_struct *task,
+	bool (*match)(struct callback_head *, void *data), void *data);
+struct callback_head *task_work_cancel(struct task_struct *, task_work_func_t);
+void task_work_run(void);
+
+static inline void exit_task_work(struct task_struct *task)
+{
+	task_work_run();
+}
+
+#endif	/* _LINUX_TASK_WORK_H */