P J P 9ba4bcb645 initramfs: read CONFIG_RD_ variables for initramfs compression
When expert configuration option(CONFIG_EXPERT) is enabled, menuconfig
offers a choice of compression algorithm to compress initial ramfs image;
This choice is stored into CONFIG_RD_* variables.  But usr/Makefile uses
earlier INITRAMFS_COMPRESSION_* macros to build initial ramfs file.  Since
none of them is defined, resulting 'initramfs_data.cpio' file remains
un-compressed.

This patch updates the Makefile to use CONFIG_RD_* variables and adds
support for LZ4 compression algorithm.  Also updates the
'gen_initramfs_list.sh' script to check whether a selected compression
command is accessible or not.  And fall-back to default gzip(1)
compression when it is not.

Signed-off-by: P J P <prasad@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:26 +09:00
..
2011-03-31 11:26:23 -03:00
2011-05-19 15:59:38 -07:00
2011-06-16 20:40:03 +02:00
2011-08-31 16:12:17 +02:00
2012-10-03 09:03:24 +02:00
2012-06-27 12:44:29 -07:00
2013-04-08 11:47:41 +02:00
2012-07-20 10:36:05 +02:00
2013-03-02 20:09:55 +00:00
2013-08-30 10:20:13 -04:00