[PATCH 02/11] tools headers: Add rcupdate.h header

[Sasha Levin]

This is now needed by liblockdep as a result of a0b0fd53e1e6
("locking/lockdep: Free lock classes that are no longer in use").

Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 tools/include/linux/rcupdate.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 tools/include/linux/rcupdate.h

diff --git a/tools/include/linux/rcupdate.h b/tools/include/linux/rcupdate.h
new file mode 100644
index 0000000000000..100e6edb54af1
--- /dev/null
+++ b/tools/include/linux/rcupdate.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LIBLOCKDEP_RCUPDATE_H_
+#define _LIBLOCKDEP_RCUPDATE_H_
+
+#define call_rcu(x, y)
+#define init_rcu_head(x)
+
+struct rcu_head { 
+	char dummy;
+};
+
+#endif
-- 
2.20.1