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authorLinus Torvalds <torvalds@linux-foundation.org>2013-07-09 13:33:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-09 13:33:36 -0700
commita82a729f04232ccd0b59406574ba4cf20027a49d (patch)
treeda5912344b00ed60a1a653fc2442db7425db289d /init
parent899dd388853071f5c8848545209d4e2c5d95b1d9 (diff)
parent27daabd9b6a157c34a6e7a7f509fa26866e6420f (diff)
downloadop-kernel-dev-a82a729f04232ccd0b59406574ba4cf20027a49d.zip
op-kernel-dev-a82a729f04232ccd0b59406574ba4cf20027a49d.tar.gz
Merge branch 'akpm' (updates from Andrew Morton)
Merge second patch-bomb from Andrew Morton: - misc fixes - audit stuff - fanotify/inotify/dnotify things - most of the rest of MM. The new cache shrinker code from Glauber and Dave Chinner probably isn't quite stabilized yet. - ptrace - ipc - partitions - reboot cleanups - add LZ4 decompressor, use it for kernel compression * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits) lib/scatterlist: error handling in __sg_alloc_table() scsi_debug: fix do_device_access() with wrap around range crypto: talitos: use sg_pcopy_to_buffer() lib/scatterlist: introduce sg_pcopy_from_buffer() and sg_pcopy_to_buffer() lib/scatterlist: factor out sg_miter_get_next_page() from sg_miter_next() crypto: add lz4 Cryptographic API lib: add lz4 compressor module arm: add support for LZ4-compressed kernel lib: add support for LZ4-compressed kernel decompressor: add LZ4 decompressor module lib: add weak clz/ctz functions reboot: move arch/x86 reboot= handling to generic kernel reboot: arm: change reboot_mode to use enum reboot_mode reboot: arm: prepare reboot_mode for moving to generic kernel code reboot: arm: remove unused restart_mode fields from some arm subarchs reboot: unicore32: prepare reboot_mode for moving to generic kernel code reboot: x86: prepare reboot_mode for moving to generic kernel code reboot: checkpatch.pl the new kernel/reboot.c file reboot: move shutdown/reboot related functions to kernel/reboot.c reboot: remove -stable friendly PF_THREAD_BOUND define ...
Diffstat (limited to 'init')
-rw-r--r--init/Kconfig17
1 files changed, 16 insertions, 1 deletions
diff --git a/init/Kconfig b/init/Kconfig
index ea1be00..54d3fa5 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -112,10 +112,13 @@ config HAVE_KERNEL_XZ
config HAVE_KERNEL_LZO
bool
+config HAVE_KERNEL_LZ4
+ bool
+
choice
prompt "Kernel compression mode"
default KERNEL_GZIP
- depends on HAVE_KERNEL_GZIP || HAVE_KERNEL_BZIP2 || HAVE_KERNEL_LZMA || HAVE_KERNEL_XZ || HAVE_KERNEL_LZO
+ depends on HAVE_KERNEL_GZIP || HAVE_KERNEL_BZIP2 || HAVE_KERNEL_LZMA || HAVE_KERNEL_XZ || HAVE_KERNEL_LZO || HAVE_KERNEL_LZ4
help
The linux kernel is a kind of self-extracting executable.
Several compression algorithms are available, which differ
@@ -182,6 +185,18 @@ config KERNEL_LZO
size is about 10% bigger than gzip; however its speed
(both compression and decompression) is the fastest.
+config KERNEL_LZ4
+ bool "LZ4"
+ depends on HAVE_KERNEL_LZ4
+ help
+ LZ4 is an LZ77-type compressor with a fixed, byte-oriented encoding.
+ A preliminary version of LZ4 de/compression tool is available at
+ <https://code.google.com/p/lz4/>.
+
+ Its compression ratio is worse than LZO. The size of the kernel
+ is about 8% bigger than LZO. But the decompression speed is
+ faster than LZO.
+
endchoice
config DEFAULT_HOSTNAME
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