Docs/ABI/testing: Add VDUSE sysfs interface ABI document

This adds missing documentation for VDUSE sysfs interface ABI
under Documentation/ABI/testing.

Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20220524115143.187-1-xieyongji@bytedance.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/ABI/testing/sysfs-class-vduse b/Documentation/ABI/testing/sysfs-class-vduse
new file mode 100644 (file)
index 0000000..2f2bc5c
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-vduse
@@ -0,0 +1,33 @@
+What:          /sys/class/vduse/
+Date:          Oct 2021
+KernelVersion: 5.15
+Contact:       Yongji Xie <xieyongji@bytedance.com>
+Description:
+               The vduse/ class sub-directory belongs to the VDUSE
+               framework and provides a sysfs interface for configuring
+               VDUSE devices.
+
+What:          /sys/class/vduse/control/
+Date:          Oct 2021
+KernelVersion: 5.15
+Contact:       Yongji Xie <xieyongji@bytedance.com>
+Description:
+               This directory entry is created for the control device
+               of VDUSE framework.
+
+What:          /sys/class/vduse/<device-name>/
+Date:          Oct 2021
+KernelVersion: 5.15
+Contact:       Yongji Xie <xieyongji@bytedance.com>
+Description:
+               This directory entry is created when a VDUSE device is
+               created via the control device.
+
+What:          /sys/class/vduse/<device-name>/msg_timeout
+Date:          Oct 2021
+KernelVersion: 5.15
+Contact:       Yongji Xie <xieyongji@bytedance.com>
+Description:
+               (RW) The timeout (in seconds) for waiting for the control
+               message's response from userspace. Default value is 30s.
+               Writing a '0' to the file means to disable the timeout.

diff --git a/MAINTAINERS b/MAINTAINERS
index 74d9b27a9a521681c386ed6d15e10e0c3712d8c9..52ced315e85fe34cd44a05660cf84713e58fe5d3 100644 (file)
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -21125,6 +21125,7 @@ M:      Jason Wang <jasowang@redhat.com>
 L:     virtualization@lists.linux-foundation.org
 S:     Maintained
 F:     Documentation/ABI/testing/sysfs-bus-vdpa
+F:     Documentation/ABI/testing/sysfs-class-vduse
 F:     Documentation/devicetree/bindings/virtio/
 F:     drivers/block/virtio_blk.c
 F:     drivers/crypto/virtio/