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| author | Benjamin Gray <bgray@linux.ibm.com> | 2023-06-06 16:17:41 +1000 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2023-06-06 17:54:49 +0900 |
| commit | 7f8256ae0efba344a9b113036b1d545a1f6cdaa7 (patch) | |
| tree | 553f30049806cd86dc0bb6ff71904dcc0a78c73e /usr/Makefile | |
| parent | feb843a469fb0ab00d2d23cfb9bcc379791011bb (diff) | |
| download | linux-7f8256ae0efba344a9b113036b1d545a1f6cdaa7.tar.gz linux-7f8256ae0efba344a9b113036b1d545a1f6cdaa7.tar.bz2 linux-7f8256ae0efba344a9b113036b1d545a1f6cdaa7.zip | |
initramfs: Encode dependency on KBUILD_BUILD_TIMESTAMP
gen_initramfs.sh has an internal dependency on KBUILD_BUILD_TIMESTAMP
for generating file mtimes that is not exposed to make, so changing
KBUILD_BUILD_TIMESTAMP will not trigger a rebuild of the archive.
Declare the mtime date as a new parameter to gen_initramfs.sh to encode
KBUILD_BUILD_TIMESTAMP in the shell command, thereby making make aware
of the dependency.
It will rebuild if KBUILD_BUILD_TIMESTAMP changes or is newly set/unset.
It will _not_ rebuild if KBUILD_BUILD_TIMESTAMP is unset before and
after. This should be fine for anyone who doesn't care about setting
specific build times in the first place.
Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com>
Tested-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Benjamin Gray <bgray@linux.ibm.com>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'usr/Makefile')
| -rw-r--r-- | usr/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/usr/Makefile b/usr/Makefile index 59d9e8b07a01..f8e1ad19e05c 100644 --- a/usr/Makefile +++ b/usr/Makefile @@ -64,6 +64,7 @@ quiet_cmd_initfs = GEN $@ $(CONFIG_SHELL) $< -o $@ -l $(obj)/.initramfs_data.cpio.d \ $(if $(CONFIG_INITRAMFS_ROOT_UID), -u $(CONFIG_INITRAMFS_ROOT_UID)) \ $(if $(CONFIG_INITRAMFS_ROOT_GID), -g $(CONFIG_INITRAMFS_ROOT_GID)) \ + $(if $(KBUILD_BUILD_TIMESTAMP), -d "$(KBUILD_BUILD_TIMESTAMP)") \ $(ramfs-input) # We rebuild initramfs_data.cpio if: |