[OE-core] [PATCH v3] kernel.bbclass: fix KERNEL_IMAGETYPE(S) for Image.gz
Kunihiko Hayashi
hayashi.kunihiko at socionext.com
Sun Jun 4 17:07:04 UTC 2017
On 2017/06/02 16:05, nicolas.dechesne at linaro.org (Nicolas Dechesne) wrote:
> KERNEL_IMAGETYPES lists all the kernel images that we want to build. in
> cb17b6c2a7 (kernel.bbclass: support kernel image type of vmlinux.gz), some logic
> was added to support vmlinux.gz which is not a target built by kernel
> makefiles (only vmlinux). It is clear that the goal of this logic is only to
> support vmlinux.gz and not others compressed format (such as Image.gz) which are
> valid target for kernel makefiles.
>
> For Image.gz we should rely on the kernel makefiles and not do the compression
> in kernel class.
>
> This patch updates the logic used to filter out non supported kernel target from
> KERNEL_IMAGETYPES, and make vmlinux.gz a 'special case', instead of *.gz. If
> more special cases are needed in the future, we could add them in a similar way.
>
> This patch should be a no-op for anyone using vmlinux or vmlinux.gz, and on top
> of that it is fixing the build for Image.gz which was not working until now.
>
> Signed-off-by: Nicolas Dechesne <nicolas.dechesne at linaro.org>
> ---
> meta/classes/kernel.bbclass | 18 +++++++++---------
> 1 file changed, 9 insertions(+), 9 deletions(-)
>
> diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
> index 7a134d5c29..7670c7107a 100644
> --- a/meta/classes/kernel.bbclass
> +++ b/meta/classes/kernel.bbclass
> @@ -32,7 +32,6 @@ KERNEL_VERSION_PKG_NAME = "${@legitimize_package_name(d.getVar('KERNEL_VERSION')
> KERNEL_VERSION_PKG_NAME[vardepvalue] = "${LINUX_VERSION}"
>
> python __anonymous () {
> - import re
>
> # Merge KERNEL_IMAGETYPE and KERNEL_ALT_IMAGETYPE into KERNEL_IMAGETYPES
> type = d.getVar('KERNEL_IMAGETYPE') or ""
> @@ -44,7 +43,10 @@ python __anonymous () {
> types = (alttype + ' ' + types).strip()
> d.setVar('KERNEL_IMAGETYPES', types)
>
> - typeformake = re.sub(r'\.gz', '', types)
> + # some commonly used kernel images aren't generated by the kernel build system, such as vmlinux.gz
> + # typeformake lists only valid kernel make targets, and post processing can be done after the kernel
> + # is built (such as using gzip to compress vmlinux)
> + typeformake = types.replace('vmlinux.gz', 'vmlinux')
> d.setVar('KERNEL_IMAGETYPE_FOR_MAKE', typeformake)
>
> for type in types.split():
> @@ -268,14 +270,12 @@ kernel_do_compile() {
> fi
> for typeformake in ${KERNEL_IMAGETYPE_FOR_MAKE} ; do
> oe_runmake ${typeformake} CC="${KERNEL_CC}" LD="${KERNEL_LD}" ${KERNEL_EXTRA_ARGS} $use_alternate_initrd
> - for type in ${KERNEL_IMAGETYPES} ; do
> - if test "${typeformake}.gz" = "${type}"; then
> - mkdir -p "${KERNEL_OUTPUT_DIR}"
> - gzip -9c < "${typeformake}" > "${KERNEL_OUTPUT_DIR}/${type}"
> - break;
> - fi
> - done
> done
> + # vmlinux.gz is not built by kernel
> + if (echo "${KERNEL_IMAGETYPES}" | grep -wq "vmlinux\.gz"); then
> + mkdir -p "${KERNEL_OUTPUT_DIR}"
> + gzip -9c < ${B}/vmlinux > "${KERNEL_OUTPUT_DIR}/vmlinux.gz"
> + fi
> }
>
> do_compile_kernelmodules() {
>
This patch treats 'vmlinux.gz' only as special case, then it looks no problem.
Although it might become redundant to add another image type such as
'vmlinux.gz', it's out of scope.
I tried this patch in case of arm, arm64 and x86. I specified the name of
compress image for each architecture to KERNEL_IMAGETYPES and I got same images
as that compressed by the kernel build system, in particular got Image.gz for
arm64 without any errors.
And I added 'vmlinux.gz' to KERNEL_IMAGETYPES and got compressed vmlinux
correctly. I think the patch works fine.
Tested-by: Kunihiko Hayashi <hayashi.kunihiko at socionext.com>
Best Regards,
Kunihiko Hayashi
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