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arm/ffa-debugfs-mod: remove kernel image runtime dependency

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CS1K wants to put the ffa-debugfs kernel module into the initramfs, but
this pulls in the kernel image too because kernel modules depend on the
kernel image (via kernel-module-split.bbclass).  Arguably this should be
controllable somehow, as it's not mandatory to have an image on the same
file system as the modules: initramfs or separate /boot partitions being
notable cases.

Until this is resolved upstream[1] we can work around it by removing the
RDEPENDS on the kernel from the kernel module.  As the package is
generated during do_package this can't be a simple RDEPENDS:remove, but
has to be another package split function which runs after the module
splitting function.

[1] https://lore.kernel.org/openembedded-core/20220209173036.3823144-1-ross.burton@arm.com/T/#t

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>
This commit is contained in:
Ross Burton
2022-02-09 17:46:09 +00:00
committed by Jon Mason
parent fee71931f4
commit a82df9187d
1 changed files with 10 additions and 0 deletions
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meta-arm/recipes-kernel/ffa-debugfs/ffa-debugfs-mod_2.1.0.bb
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@@ -27,3 +27,13 @@ do_install:append() {
}
COMPATIBLE_HOST = "(arm|aarch64).*-linux"
# Kernel modules currently RDEPEND on the kernel, which is troublesome when you want to put a
# kernel module into a initramfs without pulling the kernel into the initramfs, which would be
# silly. Until this is a recommends the easiest way to handle this is to remove the dependency
# in this recipe.
PACKAGESPLITFUNCS:append = " remove_kernel_dependency"
python remove_kernel_dependency() {
key = "RDEPENDS:kernel-module-arm-ffa-user-" + d.getVar("KERNEL_VERSION")
d.delVar(key)
}