Clone the udmabuf git repo:
$: git clone https://github.com/ikwzm/udmabuf
Enable the module in petalinux project with:
$: petalinux-create -t mudules -n u-dma-buf --enable
Copy the kernel module source code over to newly enabled u-dma-buf module with:
$: cp udmabuf/u-dma-buf.c project-spec/meta-user/recepies-modules/u-dma-buf/files/
Build the petalinux Project
copy over the kernel object to device
$: scp <PETALINUX_PROJECT_ROOT>/build/tmp/sysroots-components/plnx-components/u-dma-buf/lib/modules/<KERNEL_build_VERSION>/extra/u-dma-buf.ko <DEVICE>
If there is no /lib/modules folder in device then for the above recursively secure copy the modules folder to device and move it to /lib.
Make sure the .ko file above is moved to the path /lib/modules/<KERNEL_build_VERSION>/extra/u-dma-buf
Now as root append to the file /etc/modules the string u-dma-buf
Lastly run sudo depmod -a and reboot