Merge branches 'x86/apic', 'x86/cpu', 'x86/fixmap', 'x86/mm', 'x86/sched', 'x86/setup...

[profile/ivi/kernel-x86-ivi.git] / init / Kconfig

diff --git a/init/Kconfig b/init/Kconfig
index 9000316..95a6613 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -101,6 +101,66 @@ config LOCALVERSION_AUTO
 
          which is done within the script "scripts/setlocalversion".)
 
+config HAVE_KERNEL_GZIP
+       bool
+
+config HAVE_KERNEL_BZIP2
+       bool
+
+config HAVE_KERNEL_LZMA
+       bool
+
+choice
+       prompt "Kernel compression mode"
+       default KERNEL_GZIP
+       depends on HAVE_KERNEL_GZIP || HAVE_KERNEL_BZIP2 || HAVE_KERNEL_LZMA
+       help
+         The linux kernel is a kind of self-extracting executable.
+         Several compression algorithms are available, which differ
+         in efficiency, compression and decompression speed.
+         Compression speed is only relevant when building a kernel.
+         Decompression speed is relevant at each boot.
+
+         If you have any problems with bzip2 or lzma compressed
+         kernels, mail me (Alain Knaff) <alain@knaff.lu>. (An older
+         version of this functionality (bzip2 only), for 2.4, was
+         supplied by Christian Ludwig)
+
+         High compression options are mostly useful for users, who
+         are low on disk space (embedded systems), but for whom ram
+         size matters less.
+
+         If in doubt, select 'gzip'
+
+config KERNEL_GZIP
+       bool "Gzip"
+       depends on HAVE_KERNEL_GZIP
+       help
+         The old and tried gzip compression. Its compression ratio is
+         the poorest among the 3 choices; however its speed (both
+         compression and decompression) is the fastest.
+
+config KERNEL_BZIP2
+       bool "Bzip2"
+       depends on HAVE_KERNEL_BZIP2
+       help
+         Its compression ratio and speed is intermediate.
+         Decompression speed is slowest among the three.  The kernel
+         size is about 10% smaller with bzip2, in comparison to gzip.
+         Bzip2 uses a large amount of memory. For modern kernels you
+         will need at least 8MB RAM or more for booting.
+
+config KERNEL_LZMA
+       bool "LZMA"
+       depends on HAVE_KERNEL_LZMA
+       help
+         The most recent compression algorithm.
+         Its ratio is best, decompression speed is between the other
+         two. Compression is slowest.  The kernel size is about 33%
+         smaller with LZMA in comparison to gzip.
+
+endchoice
+
 config SWAP
        bool "Support for paging of anonymous memory (swap)"
        depends on MMU && BLOCK
@@ -683,8 +743,6 @@ menuconfig EMBEDDED
           environments which can tolerate a "non-standard" kernel.
           Only use this if you really know what you are doing.
 
-if EMBEDDED
-
 config UID16
        bool "Enable 16-bit UID system calls" if EMBEDDED
        depends on ARM || BLACKFIN || CRIS || FRV || H8300 || X86_32 || M68K || (S390 && !64BIT) || SUPERH || SPARC32 || (SPARC64 && COMPAT) || UML || (X86_64 && IA32_EMULATION)
@@ -782,6 +840,18 @@ config PCSPKR_PLATFORM
           This option allows to disable the internal PC-Speaker
           support, saving some memory.
 
+config COMPAT_BRK
+       bool "Disable heap randomization"
+       default y
+       help
+         Randomizing heap placement makes heap exploits harder, but it
+         also breaks ancient binaries (including anything libc5 based).
+         This option changes the bootup default to heap randomization
+         disabled, and can be overriden runtime by setting
+         /proc/sys/kernel/randomize_va_space to 2.
+
+         On non-ancient distros (post-2000 ones) N is usually a safe choice.
+
 config BASE_FULL
        default y
        bool "Enable full-sized data structures for core" if EMBEDDED
@@ -887,20 +957,6 @@ config SLUB_DEBUG
          SLUB sysfs support. /sys/slab will not exist and there will be
          no support for cache validation etc.
 
-endif # EMBEDDED
-
-config COMPAT_BRK
-       bool "Disable heap randomization"
-       default y
-       help
-         Randomizing heap placement makes heap exploits harder, but it
-         also breaks ancient binaries (including anything libc5 based).
-         This option changes the bootup default to heap randomization
-         disabled, and can be overriden runtime by setting
-         /proc/sys/kernel/randomize_va_space to 2.
-
-         On non-ancient distros (post-2000 ones) N is usually a safe choice.
-
 choice
        prompt "Choose SLAB allocator"
        default SLUB