The patch titled Subject: kbuild: clean compressed initramfs image has been added to the -mm tree. Its filename is kbuild-clean-compressed-initramfs-image.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/kbuild-clean-compressed-initramfs-image.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/kbuild-clean-compressed-initramfs-image.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Greg Thelen <gthelen@xxxxxxxxxx> Subject: kbuild: clean compressed initramfs image 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@xxxxxxxxxx Fixes: 9e3596b0c653 ("kbuild: initramfs cleanup, set target from Kconfig") Signed-off-by: Greg Thelen <gthelen@xxxxxxxxxx> Cc: Nicholas Piggin <npiggin@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- usr/Makefile | 3 +++ 1 file changed, 3 insertions(+) --- a/usr/Makefile~kbuild-clean-compressed-initramfs-image +++ a/usr/Makefile @@ -11,6 +11,9 @@ datafile_y = initramfs_data.cpio$(suffix datafile_d_y = .$(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 _ Patches currently in -mm which might be from gthelen@xxxxxxxxxx are kbuild-clean-compressed-initramfs-image.patch