From: Greg Thelen gthelen@google.com
[ Upstream commit 6279eb3dd7946c69346a3b98473ed13d3a44adb5 ]
Since 9e3596b0c653 ("kbuild: initramfs cleanup, set target from Kconfig") "make clean" leaves behind compressed initramfs images. Example:
$ make defconfig $ sed -i 's|CONFIG_INITRAMFS_SOURCE=""|CONFIG_INITRAMFS_SOURCE="/tmp/ir.cpio"|' .config $ make olddefconfig $ make -s $ make -s clean $ git clean -ndxf | grep initramfs Would remove usr/initramfs_data.cpio.gz
clean rules do not have CONFIG_* context so they do not know which compression format was used. Thus they don't know which files to delete.
Tell clean to delete all possible compression formats.
Once patched usr/initramfs_data.cpio.gz and friends are deleted by "make clean".
Link: http://lkml.kernel.org/r/20190722063251.55541-1-gthelen@google.com Fixes: 9e3596b0c653 ("kbuild: initramfs cleanup, set target from Kconfig") Signed-off-by: Greg Thelen gthelen@google.com Cc: Nicholas Piggin npiggin@gmail.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- usr/Makefile | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/usr/Makefile b/usr/Makefile index 748f6a60bb1e0..138c18cefb529 100644 --- a/usr/Makefile +++ b/usr/Makefile @@ -11,6 +11,9 @@ datafile_y = initramfs_data.cpio$(suffix_y) datafile_d_y = .$(datafile_y).d AFLAGS_initramfs_data.o += -DINITRAMFS_IMAGE="usr/$(datafile_y)"
+# clean rules do not have CONFIG_INITRAMFS_COMPRESSION. So clean up after all +# possible compression formats. +clean-files += initramfs_data.cpio*
# Generate builtin.o based on initramfs_data.o obj-$(CONFIG_BLK_DEV_INITRD) := initramfs_data.o