X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=init%2FKconfig;h=7be4d3836745a049596e7be06b5e850c035b1f72;hb=379b026ecc20c4657d37e40ead789f7f28f1a1c1;hp=6a5c5fed66c96e36fcaf03a9f3c8403be132a193;hpb=2ddb9f17ba026122b53b34fb4182ece91e24cf92;p=pandora-kernel.git diff --git a/init/Kconfig b/init/Kconfig index 6a5c5fed66c9..7be4d3836745 100644 --- 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) . (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 @@ -148,6 +208,12 @@ config POSIX_MQUEUE If unsure, say Y. +config POSIX_MQUEUE_SYSCTL + bool + depends on POSIX_MQUEUE + depends on SYSCTL + default y + config BSD_PROCESS_ACCT bool "BSD Process Accounting" help @@ -471,7 +537,7 @@ config CGROUP_DEVICE config CPUSETS bool "Cpuset support" - depends on SMP && CGROUPS + depends on CGROUPS help This option will let you create and manage CPUSETs which allow dynamically partitioning a system into sets of CPUs and @@ -505,7 +571,7 @@ config CGROUP_MEM_RES_CTLR select MM_OWNER help Provides a memory resource controller that manages both anonymous - memory and page cache. (See Documentation/controllers/memory.txt) + memory and page cache. (See Documentation/cgroups/memory.txt) Note that setting this option increases fixed memory overhead associated with each page of memory in the system. By this, @@ -537,6 +603,8 @@ config CGROUP_MEM_RES_CTLR_SWAP is disabled by boot option, this will be automatically disabled and there will be no overhead from this. Even when you set this config=y, if boot option "noswapaccount" is set, swap will not be accounted. + Now, memory usage of swap_cgroup is 2 bytes per entry. If swap page + size is 4096bytes, 512k per 1Gbytes of swap. endif # CGROUPS @@ -608,10 +676,10 @@ config UTS_NS config IPC_NS bool "IPC namespace" - depends on NAMESPACES && SYSVIPC + depends on NAMESPACES && (SYSVIPC || POSIX_MQUEUE) help In this namespace tasks work with IPC ids which correspond to - different IPC objects in different namespaces + different IPC objects in different namespaces. config USER_NS bool "User namespace (EXPERIMENTAL)" @@ -627,7 +695,7 @@ config PID_NS depends on NAMESPACES && EXPERIMENTAL help Support process id namespaces. This allows having multiple - process with the same pid as long as they are in different + processes with the same pid as long as they are in different pid namespaces. This is a building block of containers. Unless you want to work with an experimental feature @@ -740,6 +808,14 @@ config KALLSYMS_EXTRA_PASS you wait for kallsyms to be fixed. +config STRIP_ASM_SYMS + bool "Strip assembler-generated symbols during link" + default n + help + Strip internal assembler-generated symbols during a link (symbols + that look like '.Lxxx') so they don't pollute the output of + get_wchan() and suchlike. + config HOTPLUG bool "Support for hot-pluggable devices" if EMBEDDED default y @@ -892,7 +968,7 @@ config COMPAT_BRK 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 + disabled, and can be overridden at runtime by setting /proc/sys/kernel/randomize_va_space to 2. On non-ancient distros (post-2000 ones) N is usually a safe choice. @@ -945,13 +1021,27 @@ config TRACEPOINTS config MARKERS bool "Activate markers" - depends on TRACEPOINTS + select TRACEPOINTS help Place an empty function call at each marker site. Can be dynamically changed for a probe function. source "arch/Kconfig" +config SLOW_WORK + default n + bool + help + The slow work thread pool provides a number of dynamically allocated + threads that can be used by the kernel to perform operations that + take a relatively long time. + + An example of this would be CacheFiles doing a path lookup followed + by a series of mkdirs and a create call, all of which have to touch + disk. + + See Documentation/slow-work.txt. + endmenu # General setup config HAVE_GENERIC_DMA_COHERENT @@ -966,7 +1056,6 @@ config SLABINFO config RT_MUTEXES boolean - select PLIST config BASE_SMALL int @@ -1051,7 +1140,7 @@ config INIT_ALL_POSSIBLE cpu_possible_map, some of them chose to initialize cpu_possible_map with all 1s, and others with all 0s. When they were centralised, it was better to provide this option than to break all the archs - and have several arch maintainers persuing me down dark alleys. + and have several arch maintainers pursuing me down dark alleys. config STOP_MACHINE bool