summaryrefslogtreecommitdiff
path: root/Makefile
diff options
context:
space:
mode:
authorP J P <ppandit@redhat.com>2013-11-12 15:11:44 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-13 12:09:36 +0900
commit1bf49dd4be0b000030c6f04c4a16a17d9affdbd3 (patch)
treea4defe0519060101b6c27a6e1f3dad7b5590cb85 /Makefile
parent69f0554ec261fd686ac7fa1c598cc9eb27b83a80 (diff)
downloadkernel-1bf49dd4be0b000030c6f04c4a16a17d9affdbd3.tar.gz
./Makefile: export initial ramdisk compression config option
Make menuconfig allows one to choose compression format of an initial ramdisk image. But this choice does not result in duly compressed ramdisk image. Because - $ make install - does not pass on the selected compression choice to the dracut(8) tool, which creates the initramfs file. dracut(8) generates the image with the default compression, ie. gzip(1). This patch exports the selected compression option to a sub-shell environment, so that it could be used by dracut(8) tool to generate appropriately compressed initramfs images. There isn't a straightforward way to pass on options to dracut(8) via positional parameters. Because it is indirectly invoked at the end of a $ make install sequence. # make install -> arch/$arch/boot/Makefile -> arch/$arch/boot/install.sh -> /sbing/installkernel ... -> /sbin/new-kernel-pkg ... -> /sbin/dracut ... Signed-off-by: P J P <ppandit@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile16
1 files changed, 16 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 67077ad6edbb..606a66cdcdb8 100644
--- a/Makefile
+++ b/Makefile
@@ -720,6 +720,22 @@ mod_strip_cmd = true
endif # INSTALL_MOD_STRIP
export mod_strip_cmd
+# Select initial ramdisk compression format, default is gzip(1).
+# This shall be used by the dracut(8) tool while creating an initramfs image.
+#
+INITRD_COMPRESS=gzip
+ifeq ($(CONFIG_RD_BZIP2), y)
+ INITRD_COMPRESS=bzip2
+else ifeq ($(CONFIG_RD_LZMA), y)
+ INITRD_COMPRESS=lzma
+else ifeq ($(CONFIG_RD_XZ), y)
+ INITRD_COMPRESS=xz
+else ifeq ($(CONFIG_RD_LZO), y)
+ INITRD_COMPRESS=lzo
+else ifeq ($(CONFIG_RD_LZ4), y)
+ INITRD_COMPRESS=lz4
+endif
+export INITRD_COMPRESS
ifdef CONFIG_MODULE_SIG_ALL
MODSECKEY = ./signing_key.priv