Merge tag 'locking-urgent-2026-09-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipgrafted

Pull futex fix from Ingo Molnar:

 - Also allocate a default private futex hash on vfork() as well, to
   avoid races with (private) futex waiters (Peter Zijlstra)

* tag 'locking-urgent-2026-09-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  futex: Also allocate private hash on vfork()

1 files changed, 49 insertions, 0 deletions

diff --git a/Documentation/driver-api/auxiliary_bus.rst b/Documentation/driver-api/auxiliary_bus.rst
new file mode 100644
index 000000000..b236de773
--- /dev/null
+++ b/Documentation/driver-api/auxiliary_bus.rst
@@ -0,0 +1,49 @@
+.. SPDX-License-Identifier: GPL-2.0-only
+
+.. _auxiliary_bus:
+
+=============
+Auxiliary Bus
+=============
+
+.. kernel-doc:: drivers/base/auxiliary.c
+   :doc: PURPOSE
+
+When Should the Auxiliary Bus Be Used
+=====================================
+
+.. kernel-doc:: drivers/base/auxiliary.c
+   :doc: USAGE
+
+
+Auxiliary Device Creation
+=========================
+
+.. kernel-doc:: include/linux/auxiliary_bus.h
+   :identifiers: auxiliary_device
+
+.. kernel-doc:: drivers/base/auxiliary.c
+   :identifiers: auxiliary_device_init __auxiliary_device_add
+
+Auxiliary Device Memory Model and Lifespan
+------------------------------------------
+
+.. kernel-doc:: include/linux/auxiliary_bus.h
+   :doc: DEVICE_LIFESPAN
+
+
+Auxiliary Drivers
+=================
+
+.. kernel-doc:: include/linux/auxiliary_bus.h
+   :identifiers: auxiliary_driver module_auxiliary_driver
+
+.. kernel-doc:: drivers/base/auxiliary.c
+   :identifiers: __auxiliary_driver_register auxiliary_driver_unregister
+
+Example Usage
+=============
+
+.. kernel-doc:: drivers/base/auxiliary.c
+   :doc: EXAMPLE
+