linux-kernel - [PATCH REBASE] Add option to disable kernel compression

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Message-Id: <1381235612-23988-1-git-send-email-christian.ruppert@abilis.com>
Date:	Tue,  8 Oct 2013 14:33:32 +0200
From:	Christian Ruppert <christian.ruppert@...lis.com>
To:	linux-kernel@...r.kernel.org
Cc:	alexander.stein@...tec-electronic.com,
	Vineet Gupta <Vineet.Gupta1@...opsys.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Serge Hallyn <serge.hallyn@...onical.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	"David S. Miller" <davem@...emloft.net>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Noam Camus <noamc@...hip.com>,
	pierrick hascoet <pierrick.hascoet@...lis.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christian Ruppert <christian.ruppert@...lis.com>
Subject: [PATCH REBASE] Add option to disable kernel compression

Until now, kernel compression can only be disabled by deselecting
HAVE_<compression> in the architecture Kconfig. However, some
users/platforms within the same architecture might want to use
compression while others might want to disable it.
This patch is a solution to the dilemma.

Signed-off-by: Christian Ruppert <christian.ruppert@...lis.com>
---
 init/Kconfig |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/init/Kconfig b/init/Kconfig
index fed81b5..7db419b 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -118,7 +118,6 @@ config HAVE_KERNEL_LZ4
 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 || HAVE_KERNEL_LZ4
 	help
 	  The linux kernel is a kind of self-extracting executable.
 	  Several compression algorithms are available, which differ
@@ -137,6 +136,13 @@ choice
 
 	  If in doubt, select 'gzip'
 
+config KERNEL_UNCOMPRESSED
+	bool "No compression"
+	help
+	  No compression at all. The kernel is huge but the compression and
+	  decompression times are zero.
+	  This is usually not what you want.
+
 config KERNEL_GZIP
 	bool "Gzip"
 	depends on HAVE_KERNEL_GZIP
-- 
1.7.1

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