[OE-core] [PATCH v4] kernel: Add support for multiple kernel packages
Haris Okanovic
haris.okanovic at ni.com
Tue Jul 18 13:34:06 UTC 2017
On 07/17/2017 03:31 PM, Wold, Saul wrote:
> On Wed, 2017-07-05 at 12:33 -0500, Haris Okanovic wrote:
>> Some distros may want to provide alternate kernel "flavors" via feeds
>> or
>> within bootable images. For example, readily available builds which
>> provide certain diagnostic features can enable developers and testers
>> to
>> more quickly resolve issues by avoiding lengthy kernel builds.
>>
>> This change allows for building multiple flavors of the kernel and
>> module packages by templatizing kernel package names via a new
>> KERNEL_PACKAGE_NAME variable in kernel.bbclass. It defaults to the
>> old
>> name of "kernel", but can be overridden by certain recipes providing
>> alternate kernel flavors.
>>
>> To maintain compatibility, recipes providing alternate kernel flavors
>> cannot be the "preferred provider" for virtual/kernel. This is
>> because
>> OE puts the preferred provider's build and source at
>> "tmp-glibc/work-shared/$MACHINE/kernel-build-artifacts/" and
>> "tmp-glibc/work-shared/$MACHINE/kernel-source/" instead of
>> "tmp-glibc/work/*/$PN/" like other recipes. Therefore, recipes using
>> the
>> default KERNEL_PACKAGE_NAME="kernel" follows the old semantics --
>> build
>> in the old location and may be preferred provider -- while recipes
>> using
>> all other KERNEL_PACKAGE_NAME's build from the normal WORKDIR and
>> don't
>> provide "virtual/kernel".
>>
>> Testing:
>> 1. Prepended `KERNEL_PACKAGE_NAME = "tiny-linux"` to
>> linux-yocto-tiny_4.9.bb so that it may build alongside
>> the main kernel.
>> 2. `bitbake linux-yocto linux-yocto-tiny` to build both kernel
>> flavors.
>> 3. Verified image and modules IPKs exist for both:
>> tmp-glibc/deploy/ipk/qemux86/kernel-* for linux-yocto
>> tmp-glibc/deploy/ipk/qemux86/tiny-linux* for linux-yocto-tiny
>> 4. Verified linux-yocto is the "preferred provider", and was built
>> in
>> shared directory: tmp-glibc/work-shared/qemux86/kernel-*
>> 5. Appended `CORE_IMAGE_BASE_INSTALL += "tiny-linux"` to
>> core-image-base.bb to include both kernel flavors.
>> 6. `bitbake core-image-base` to build an image.
>> 7. Verified image contains two bzImage's under /boot/, with
>> "yocto-standard" selected to boot via symlink.
>>
>> Discussion thread:
>> http://lists.openembedded.org/pipermail/openembedded-core/2015-Decemb
>> er/thread.html#114122
>>
>> Signed-off-by: Ioan-Adrian Ratiu <adrian.ratiu at ni.com>
>> Signed-off-by: Gratian Crisan <gratian.crisan at ni.com>
>> Signed-off-by: Haris Okanovic <haris.okanovic at ni.com>
>> Coauthored-by: Gratian Crisan <gratian.crisan at ni.com>
>> Coauthored-by: Haris Okanovic <haris.okanovic at ni.com>
>> Coauthored-by: Josh Hernstrom <josh.hernstrom at ni.com>
>> ---
>> [PATCH v2] Change STAGING_KERNEL_DIR and STAGING_KERNEL_BUILDDIR to
>> the
>> "work" directory in alternate kernel builds, instead of "work-
>> shared",
>> so
>> that the two builds don't clobber each other.
>>
>> [PATCH v3] An updated version of this change rebased onto the current
>> OE-core master. Changes:
>> * Remove PREFERRED_PROVIDER check in linux-yocto.inc in alternate
>> kernel builds, since alternate kernels aren't the
>> PREFERRED_PROVIDER for virtual/kernel by definition.
>> * Remove "virtual/kernel" from PROVIDES in alternate kernel builds.
>>
>> [PATCH v4] Another rebase onto master; no functional change.
>> Improved description and testing steps.
>
> So I finally had a chance to get back to this and test build with it, I
> saw the following WARNING, which lead to the ERROR:
>
> WARNING: Variable key FILES_${PN}-dev (${includedir} ${FILES_SOLIBSDEV}
> ${libdir}/*.la ${libdir}/*.o ${libdir}/pkgconfig ${datadir}/pkgconfig
> ${datadir}/aclocal ${base_libdir}/*.o ${libdir}/${BPN}/*.la
> ${base_libdir}/*.la) replaces original key FILES_linux-yocto-dev
> (/boot/System.map* /boot/Module.symvers* /boot/config*
> ${KERNEL_SRC_PATH}
> ${nonarch_base_libdir}/modules/${KERNEL_VERSION}/build).
> ERROR: linux-yocto-4.10.17+gitAUTOINC+e92bd55409_6648a34e00-r0
> do_package: QA Issue: linux-yocto: Files/directories were installed but
> not shipped in any package:
> /boot/System.map-4.10.17-yocto-standard
> /boot/Module.symvers-4.10.17-yocto-standard
> /boot/config-4.10.17-yocto-standard
> Please set FILES such that these items are packaged. Alternatively if
> they are unneeded, avoid installing them or delete them within
> do_install.
> linux-yocto: 3 installed and not shipped files. [installed-vs-shipped]
> ERROR: linux-yocto-4.10.17+gitAUTOINC+e92bd55409_6648a34e00-r0
> do_package: Fatal QA errors found, failing task.
> ERROR: linux-yocto-4.10.17+gitAUTOINC+e92bd55409_6648a34e00-r0
> do_package: Function failed: do_package
>
> Something seems to be causing the FILES_linux-yocto-dev info to be
> overridden, I have not tracked down the culprit yet.
>
`FILES_linux-yocto-dev` is set to the default value from OE's
bitbake.conf. `FILES_kernel-dev` on the other hand is set by
kernel.bbclass; when `KERNEL_PACKAGE_NAME` expands to `kernel`.
I think the real issue here is that QA checks care about
`FILES_${PN}-dev` at all even though that particular package name isn't
listed in `PACKAGES` variable. I.e. `FILES_${PN}-dev` should be
disregarded since the `linux-yocto` recipe doesn't create package
`${PN}-dev`.
Thoughts?
> Sau!
>
>> ---
>> meta/classes/kernel-module-split.bbclass | 9 ++--
>> meta/classes/kernel.bbclass | 85 ++++++++++++++++++---
>> ----------
>> meta/conf/documentation.conf | 1 +
>> meta/recipes-kernel/linux/linux-dtb.inc | 2 +-
>> meta/recipes-kernel/linux/linux-yocto.inc | 2 +-
>> 5 files changed, 59 insertions(+), 40 deletions(-)
>>
>> diff --git a/meta/classes/kernel-module-split.bbclass
>> b/meta/classes/kernel-module-split.bbclass
>> index 1035525dac..9716c5937b 100644
>> --- a/meta/classes/kernel-module-split.bbclass
>> +++ b/meta/classes/kernel-module-split.bbclass
>> @@ -30,7 +30,7 @@ do_install_append() {
>>
>> PACKAGESPLITFUNCS_prepend = "split_kernel_module_packages "
>>
>> -KERNEL_MODULES_META_PACKAGE ?= "kernel-modules"
>> +KERNEL_MODULES_META_PACKAGE ?= "${KERNEL_PACKAGE_NAME}-modules"
>>
>> KERNEL_MODULE_PACKAGE_PREFIX ?= ""
>> KERNEL_MODULE_PACKAGE_SUFFIX ?= "-${KERNEL_VERSION}"
>> @@ -129,16 +129,19 @@ python split_kernel_module_packages () {
>> postfix = format.split('%s')[1]
>> d.setVar('RPROVIDES_' + pkg, pkg.replace(postfix, ''))
>>
>> + kernel_package_name = d.getVar("KERNEL_PACKAGE_NAME", True)
>> + kernel_version = d.getVar("KERNEL_VERSION", True)
>> +
>> module_regex = '^(.*)\.k?o$'
>>
>> module_pattern_prefix = d.getVar('KERNEL_MODULE_PACKAGE_PREFIX')
>> module_pattern_suffix = d.getVar('KERNEL_MODULE_PACKAGE_SUFFIX')
>> - module_pattern = module_pattern_prefix + 'kernel-module-%s' +
>> module_pattern_suffix
>> + module_pattern = module_pattern_prefix + kernel_package_name +
>> '-module-%s' + module_pattern_suffix
>>
>> postinst = d.getVar('pkg_postinst_modules')
>> postrm = d.getVar('pkg_postrm_modules')
>>
>> - modules = do_split_packages(d,
>> root='${nonarch_base_libdir}/modules', file_regex=module_regex,
>> output_pattern=module_pattern, description='%s kernel module',
>> postinst=postinst, postrm=postrm, recursive=True, hook=frob_metadata,
>> extra_depends='kernel-%s' % (d.getVar("KERNEL_VERSION")))
>> + modules = do_split_packages(d,
>> root='${nonarch_base_libdir}/modules', file_regex=module_regex,
>> output_pattern=module_pattern, description='%s kernel module',
>> postinst=postinst, postrm=postrm, recursive=True, hook=frob_metadata,
>> extra_depends='%s-%s' % (kernel_package_name, kernel_version))
>> if modules:
>> metapkg = d.getVar('KERNEL_MODULES_META_PACKAGE')
>> d.appendVar('RDEPENDS_' + metapkg, ' '+' '.join(modules))
>> diff --git a/meta/classes/kernel.bbclass
>> b/meta/classes/kernel.bbclass
>> index 7670c7107a..7fa4509961 100644
>> --- a/meta/classes/kernel.bbclass
>> +++ b/meta/classes/kernel.bbclass
>> @@ -1,6 +1,8 @@
>> inherit linux-kernel-base kernel-module-split
>>
>> -PROVIDES += "virtual/kernel"
>> +KERNEL_PACKAGE_NAME ??= "kernel"
>> +
>> +PROVIDES += "${@ "virtual/kernel" if
>> (d.getVar("KERNEL_PACKAGE_NAME", True) == "kernel") else "" }"
>> DEPENDS += "virtual/${TARGET_PREFIX}binutils
>> virtual/${TARGET_PREFIX}gcc kmod-native bc-native lzop-native"
>> PACKAGE_WRITE_DEPS += "depmodwrapper-cross virtual/update-
>> alternatives-native"
>>
>> @@ -33,10 +35,23 @@ KERNEL_VERSION_PKG_NAME[vardepvalue] =
>> "${LINUX_VERSION}"
>>
>> python __anonymous () {
>>
>> + # The default kernel recipe builds in a shared location defined
>> by
>> + # bitbake/distro confs: STAGING_KERNEL_DIR and
>> STAGING_KERNEL_BUILDDIR.
>> + # Set these variables to directories under ${WORKDIR} in
>> alternate
>> + # kernel recipes (I.e. where KERNEL_PACKAGE_NAME != kernel) so
>> that they
>> + # may build in parallel with the default kernel without
>> clobbering.
>> + if d.getVar("KERNEL_PACKAGE_NAME", True) != "kernel":
>> + workdir = d.getVar("WORKDIR", True)
>> + sourceDir = os.path.join(workdir, 'kernel-source')
>> + artifactsDir = os.path.join(workdir, 'kernel-build-
>> artifacts')
>> + d.setVar("STAGING_KERNEL_DIR", sourceDir)
>> + d.setVar("STAGING_KERNEL_BUILDDIR", artifactsDir)
>> +
>> # Merge KERNEL_IMAGETYPE and KERNEL_ALT_IMAGETYPE into
>> KERNEL_IMAGETYPES
>> type = d.getVar('KERNEL_IMAGETYPE') or ""
>> alttype = d.getVar('KERNEL_ALT_IMAGETYPE') or ""
>> types = d.getVar('KERNEL_IMAGETYPES') or ""
>> + kname = d.getVar('KERNEL_PACKAGE_NAME', True) or "kernel"
>> if type not in types.split():
>> types = (type + ' ' + types).strip()
>> if alttype not in types.split():
>> @@ -53,22 +68,22 @@ python __anonymous () {
>> typelower = type.lower()
>> imagedest = d.getVar('KERNEL_IMAGEDEST')
>>
>> - d.appendVar('PACKAGES', ' ' + 'kernel-image-' + typelower)
>> + d.appendVar('PACKAGES', ' %s-image-%s' % (kname, typelower))
>>
>> - d.setVar('FILES_kernel-image-' + typelower, '/' + imagedest
>> + '/' + type + '-${KERNEL_VERSION_NAME}')
>> + d.setVar('FILES_' + kname + '-image-' + typelower, '/' +
>> imagedest + '/' + type + '-${KERNEL_VERSION_NAME}')
>>
>> - d.appendVar('RDEPENDS_kernel-image', ' ' + 'kernel-image-' +
>> typelower)
>> + d.appendVar('RDEPENDS_%s-image' % kname, ' %s-image-%s' %
>> (kname, typelower))
>>
>> - d.setVar('PKG_kernel-image-' + typelower, 'kernel-image-' +
>> typelower + '-${KERNEL_VERSION_PKG_NAME}')
>> + d.setVar('PKG_%s-image-%s' % (kname,typelower), '%s-image-
>> %s-${KERNEL_VERSION_PKG_NAME}' % (kname, typelower))
>>
>> - d.setVar('ALLOW_EMPTY_kernel-image-' + typelower, '1')
>> + d.setVar('ALLOW_EMPTY_%s-image-%s' % (kname, typelower),
>> '1')
>>
>> priority = d.getVar('KERNEL_PRIORITY')
>> postinst = '#!/bin/sh\n' + 'update-alternatives --install /'
>> + imagedest + '/' + type + ' ' + type + ' ' + type + '-
>> ${KERNEL_VERSION_NAME} ' + priority + ' || true' + '\n'
>> - d.setVar('pkg_postinst_kernel-image-' + typelower, postinst)
>> + d.setVar('pkg_postinst_' + kname + '-image-' + typelower,
>> postinst)
>>
>> postrm = '#!/bin/sh\n' + 'update-alternatives --remove' + '
>> ' + type + ' ' + type + '-${KERNEL_VERSION_NAME} || true' + '\n'
>> - d.setVar('pkg_postrm_kernel-image-' + typelower, postrm)
>> + d.setVar('pkg_postrm_%s-image-%s' % (kname, typelower),
>> postrm)
>>
>> image = d.getVar('INITRAMFS_IMAGE')
>> if image:
>> @@ -126,9 +141,9 @@ base_do_unpack_append () {
>>
>> inherit kernel-arch deploy
>>
>> -PACKAGES_DYNAMIC += "^kernel-module-.*"
>> -PACKAGES_DYNAMIC += "^kernel-image-.*"
>> -PACKAGES_DYNAMIC += "^kernel-firmware-.*"
>> +PACKAGES_DYNAMIC += "^${KERNEL_PACKAGE_NAME}-module-.*"
>> +PACKAGES_DYNAMIC += "^${KERNEL_PACKAGE_NAME}-image-.*"
>> +PACKAGES_DYNAMIC += "^${KERNEL_PACKAGE_NAME}-firmware-.*"
>>
>> export OS = "${TARGET_OS}"
>> export CROSS_COMPILE = "${TARGET_PREFIX}"
>> @@ -371,9 +386,9 @@ do_shared_workdir_setscene () {
>>
>> emit_depmod_pkgdata() {
>> # Stash data for depmod
>> - install -d ${PKGDESTWORK}/kernel-depmod/
>> - echo "${KERNEL_VERSION}" > ${PKGDESTWORK}/kernel-
>> depmod/kernel-abiversion
>> - cp ${B}/System.map ${PKGDESTWORK}/kernel-depmod/System.map-
>> ${KERNEL_VERSION}
>> + install -d ${PKGDESTWORK}/${KERNEL_PACKAGE_NAME}-depmod/
>> + echo "${KERNEL_VERSION}" >
>> ${PKGDESTWORK}/${KERNEL_PACKAGE_NAME}-depmod/${KERNEL_PACKAGE_NAME}-
>> abiversion
>> + cp ${B}/System.map ${PKGDESTWORK}/${KERNEL_PACKAGE_NAME}-
>> depmod/System.map-${KERNEL_VERSION}
>> }
>>
>> PACKAGEFUNCS += "emit_depmod_pkgdata"
>> @@ -388,7 +403,7 @@ do_shared_workdir () {
>> # Store the kernel version in sysroots for module-
>> base.bbclass
>> #
>>
>> - echo "${KERNEL_VERSION}" > $kerneldir/kernel-abiversion
>> + echo "${KERNEL_VERSION}" >
>> $kerneldir/${KERNEL_PACKAGE_NAME}-abiversion
>>
>> # Copy files required for module builds
>> cp System.map $kerneldir/System.map-${KERNEL_VERSION}
>> @@ -486,28 +501,28 @@ EXPORT_FUNCTIONS do_compile do_install
>> do_configure
>>
>> # kernel-base becomes kernel-${KERNEL_VERSION}
>> # kernel-image becomes kernel-image-${KERNEL_VERSION}
>> -PACKAGES = "kernel kernel-base kernel-vmlinux kernel-image kernel-
>> dev kernel-modules"
>> +PACKAGES = "${KERNEL_PACKAGE_NAME} ${KERNEL_PACKAGE_NAME}-base
>> ${KERNEL_PACKAGE_NAME}-vmlinux ${KERNEL_PACKAGE_NAME}-image
>> ${KERNEL_PACKAGE_NAME}-dev ${KERNEL_PACKAGE_NAME}-modules"
>> FILES_${PN} = ""
>> -FILES_kernel-base =
>> "${nonarch_base_libdir}/modules/${KERNEL_VERSION}/modules.order
>> ${nonarch_base_libdir}/modules/${KERNEL_VERSION}/modules.builtin"
>> -FILES_kernel-image = ""
>> -FILES_kernel-dev = "/boot/System.map* /boot/Module.symvers*
>> /boot/config* ${KERNEL_SRC_PATH}
>> ${nonarch_base_libdir}/modules/${KERNEL_VERSION}/build"
>> -FILES_kernel-vmlinux = "/boot/vmlinux-${KERNEL_VERSION_NAME}"
>> -FILES_kernel-modules = ""
>> -RDEPENDS_kernel = "kernel-base"
>> +FILES_${KERNEL_PACKAGE_NAME}-base =
>> "${nonarch_base_libdir}/modules/${KERNEL_VERSION}/modules.order
>> ${nonarch_base_libdir}/modules/${KERNEL_VERSION}/modules.builtin"
>> +FILES_${KERNEL_PACKAGE_NAME}-image = ""
>> +FILES_${KERNEL_PACKAGE_NAME}-dev = "/boot/System.map*
>> /boot/Module.symvers* /boot/config* ${KERNEL_SRC_PATH}
>> ${nonarch_base_libdir}/modules/${KERNEL_VERSION}/build"
>> +FILES_${KERNEL_PACKAGE_NAME}-vmlinux = "/boot/vmlinux-
>> ${KERNEL_VERSION_NAME}"
>> +FILES_${KERNEL_PACKAGE_NAME}-modules = ""
>> +RDEPENDS_${KERNEL_PACKAGE_NAME} = "${KERNEL_PACKAGE_NAME}-base"
>> # Allow machines to override this dependency if kernel image files
>> are
>> # not wanted in images as standard
>> -RDEPENDS_kernel-base ?= "kernel-image"
>> -PKG_kernel-image = "kernel-image-${@legitimize_package_name('${KERNE
>> L_VERSION}')}"
>> -RDEPENDS_kernel-image += "${@base_conditional('KERNEL_IMAGETYPE',
>> 'vmlinux', 'kernel-vmlinux', '', d)}"
>> -PKG_kernel-base = "kernel-${@legitimize_package_name('${KERNEL_VERSI
>> ON}')}"
>> -RPROVIDES_kernel-base += "kernel-${KERNEL_VERSION}"
>> -ALLOW_EMPTY_kernel = "1"
>> -ALLOW_EMPTY_kernel-base = "1"
>> -ALLOW_EMPTY_kernel-image = "1"
>> -ALLOW_EMPTY_kernel-modules = "1"
>> -DESCRIPTION_kernel-modules = "Kernel modules meta package"
>> -
>> -pkg_postinst_kernel-base () {
>> +RDEPENDS_${KERNEL_PACKAGE_NAME}-base ?= "${KERNEL_PACKAGE_NAME}-
>> image"
>> +PKG_${KERNEL_PACKAGE_NAME}-image = "${KERNEL_PACKAGE_NAME}-image-${@
>> legitimize_package_name('${KERNEL_VERSION}')}"
>> +RDEPENDS_${KERNEL_PACKAGE_NAME}-image += "${@base_conditional('KERNE
>> L_IMAGETYPE', 'vmlinux', '${KERNEL_PACKAGE_NAME}-vmlinux', '', d)}"
>> +PKG_${KERNEL_PACKAGE_NAME}-base = "${KERNEL_PACKAGE_NAME}-${@legitim
>> ize_package_name('${KERNEL_VERSION}')}"
>> +RPROVIDES_${KERNEL_PACKAGE_NAME}-base += "${KERNEL_PACKAGE_NAME}-
>> ${KERNEL_VERSION}"
>> +ALLOW_EMPTY_${KERNEL_PACKAGE_NAME} = "1"
>> +ALLOW_EMPTY_${KERNEL_PACKAGE_NAME}-base = "1"
>> +ALLOW_EMPTY_${KERNEL_PACKAGE_NAME}-image = "1"
>> +ALLOW_EMPTY_${KERNEL_PACKAGE_NAME}-modules = "1"
>> +DESCRIPTION_${KERNEL_PACKAGE_NAME}-modules = "Kernel modules meta
>> package"
>> +
>> +pkg_postinst_${KERNEL_PACKAGE_NAME}-base () {
>> if [ ! -e "$D/lib/modules/${KERNEL_VERSION}" ]; then
>> mkdir -p $D/lib/modules/${KERNEL_VERSION}
>> fi
>> @@ -521,7 +536,7 @@ pkg_postinst_kernel-base () {
>> PACKAGESPLITFUNCS_prepend = "split_kernel_packages "
>>
>> python split_kernel_packages () {
>> - do_split_packages(d, root='${nonarch_base_libdir}/firmware',
>> file_regex='^(.*)\.(bin|fw|cis|csp|dsp)$', output_pattern='kernel-
>> firmware-%s', description='Firmware for %s', recursive=True,
>> extra_depends='')
>> + do_split_packages(d, root='${nonarch_base_libdir}/firmware',
>> file_regex='^(.*)\.(bin|fw|cis|csp|dsp)$',
>> output_pattern='${KERNEL_PACKAGE_NAME}-firmware-%s',
>> description='Firmware for %s', recursive=True, extra_depends='')
>> }
>>
>> # Many scripts want to look in arch/$arch/boot for the bootable
>> diff --git a/meta/conf/documentation.conf
>> b/meta/conf/documentation.conf
>> index 35b9103b4a..e061b98de3 100644
>> --- a/meta/conf/documentation.conf
>> +++ b/meta/conf/documentation.conf
>> @@ -248,6 +248,7 @@ KERNEL_IMAGETYPE[doc] = "The type of kernel to
>> build for a device, usually set b
>> KERNEL_IMAGETYPES[doc] = "The list of types of kernel to build for a
>> device, usually set by the machine configuration files and defaults
>> to KERNEL_IMAGETYPE."
>> KERNEL_MODULE_AUTOLOAD[doc] = "Lists kernel modules that need to be
>> auto-loaded during boot"
>> KERNEL_MODULE_PROBECONF[doc] = "Lists kernel modules for which the
>> build system expects to find module_conf_* values that specify
>> configuration for each of the modules"
>> +KERNEL_PACKAGE_NAME[doc] = "Name prefix for kernel packages.
>> Defaults to 'kernel'."
>> KERNEL_PATH[doc] = "The location of the kernel sources. This
>> variable is set to the value of the STAGING_KERNEL_DIR within the
>> module class (module.bbclass)."
>> KERNEL_SRC[doc] = "The location of the kernel sources. This variable
>> is set to the value of the STAGING_KERNEL_DIR within the module class
>> (module.bbclass)."
>> KFEATURE_DESCRIPTION[doc] = "Provides a short description of a
>> configuration fragment. You use this variable in the .scc file that
>> describes a configuration fragment file."
>> diff --git a/meta/recipes-kernel/linux/linux-dtb.inc b/meta/recipes-
>> kernel/linux/linux-dtb.inc
>> index 0174c80d85..da6467bf9f 100644
>> --- a/meta/recipes-kernel/linux/linux-dtb.inc
>> +++ b/meta/recipes-kernel/linux/linux-dtb.inc
>> @@ -4,7 +4,7 @@ FILES_kernel-devicetree =
>> "/${KERNEL_IMAGEDEST}/devicetree*"
>> PACKAGE_WRITE_DEPS += "virtual/update-alternatives-native"
>>
>> python __anonymous () {
>> - d.appendVar("PACKAGES", " kernel-devicetree")
>> + d.appendVar("PACKAGES", " ${KERNEL_PACKAGE_NAME}-devicetree")
>> }
>>
>> normalize_dtb () {
>> diff --git a/meta/recipes-kernel/linux/linux-yocto.inc
>> b/meta/recipes-kernel/linux/linux-yocto.inc
>> index 637506a2a8..4e0ce029da 100644
>> --- a/meta/recipes-kernel/linux/linux-yocto.inc
>> +++ b/meta/recipes-kernel/linux/linux-yocto.inc
>> @@ -12,7 +12,7 @@ INC_PR = "r4"
>> # PREFERRED_PROVIDER for virtual/kernel. This avoids network access
>> required
>> # by the use of AUTOREV SRCREVs, which are the default for this
>> recipe.
>> python () {
>> - if d.getVar("PREFERRED_PROVIDER_virtual/kernel") !=
>> d.getVar("PN"):
>> + if d.getVar("KERNEL_PACKAGE_NAME", True) == "kernel" and
>> d.getVar("PREFERRED_PROVIDER_virtual/kernel", True) != d.getVar("PN",
>> True):
>> d.delVar("BB_DONT_CACHE")
>> raise bb.parse.SkipPackage("Set
>> PREFERRED_PROVIDER_virtual/kernel to %s to enable it" %
>> (d.getVar("PN")))
>> }
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