1 files changed, 46 insertions, 0 deletions
diff --git a/arch/arm/include/asm/thread_notify.h b/arch/arm/include/asm/thread_notify.h
new file mode 100644
index 000000000..1c1542e2e
--- /dev/null
+++ b/arch/arm/include/asm/thread_notify.h
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ *  arch/arm/include/asm/thread_notify.h
+ *
+ *  Copyright (C) 2006 Russell King.
+ */
+#ifndef ASMARM_THREAD_NOTIFY_H
+#define ASMARM_THREAD_NOTIFY_H
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+
+#include <linux/notifier.h>
+#include <asm/thread_info.h>
+
+static inline int thread_register_notifier(struct notifier_block *n)
+{
+	extern struct atomic_notifier_head thread_notify_head;
+	return atomic_notifier_chain_register(&thread_notify_head, n);
+}
+
+static inline void thread_unregister_notifier(struct notifier_block *n)
+{
+	extern struct atomic_notifier_head thread_notify_head;
+	atomic_notifier_chain_unregister(&thread_notify_head, n);
+}
+
+static inline void thread_notify(unsigned long rc, struct thread_info *thread)
+{
+	extern struct atomic_notifier_head thread_notify_head;
+	atomic_notifier_call_chain(&thread_notify_head, rc, thread);
+}
+
+#endif
+
+/*
+ * These are the reason codes for the thread notifier.
+ */
+#define THREAD_NOTIFY_FLUSH	0
+#define THREAD_NOTIFY_EXIT	1
+#define THREAD_NOTIFY_SWITCH	2
+#define THREAD_NOTIFY_COPY	3
+
+#endif
+#endif