ec7d0d4768
In preparation for the introduction of an out-of-tree version of the Broadcom NetXtreme-E device drivers, this commit prepares the kernel for the disablement of the CONFIG_BNXT kernel configuration option. Disabling CONFIG_BNXT (which will be done in a follow-up commit) removes the last in-tree user (i.e., 'select'or) of the kernel configuration option CONFIG_PAGE_POOL, which is not a user-selectable option. This causes the kernel's build system to automatically disable CONFIG_PAGE_POOL. However, drivers such as mlnx-ofa_kernel and the upcoming bnxt_en/bnxt_re make use of the functionality enabled by CONFIG_PAGE_POOL. Hence, this commit forcibly enables CONFIG_PAGE_POOL via a kernel patch to avoid the following module symbol check errors when building mlnx-ofa_kernel: MODPOST .../mlnx-ofa_kernel-5.3/obj/default/Module.symvers ERROR: modpost: "page_pool_update_nid" [.../mlx5_core.ko] undefined! ERROR: modpost: "page_pool_alloc_pages" [.../mlx5_core.ko] undefined! ERROR: modpost: "page_pool_create" [.../mlx5_core.ko] undefined! Unfortunately, simply adding CONFIG_PAGE_POOL=y to the kernel's configuration file (.config) file is insufficient. This is because it is a "hidden" option. Hence, there is a need to enable this option by default by patching the kernel. Testing: - An ISO image was successfully built using a monolithic incremental build procedure. - The ISO image was installed and bootstrapped in a virtual machine in All-in-One simplex configuration twice, once with the low-latency profile and once with the standard/non-low-latency profile. - The same experiment was repeated with a "standard" StarlingX system with two controllers and two compute nodes, with the compute nodes in low-latency mode. (The servers in this system are connected with Mellanox network adapters.) Story: 2009915 Task: 44762 Change-Id: Id60653442c7d2957f177ec0d8e1a78edf284825f Signed-off-by: M. Vefa Bicakci <vefa.bicakci@windriver.com>