X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=init%2FKconfig;h=6b5cca9ef08e729a4750ff9522bb27aca17972ee;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=337feb1026ea09e55bdee12e119077ec5de07cff;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git diff --git a/init/Kconfig b/init/Kconfig index 337feb102..6b5cca9ef 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1,4 +1,3 @@ - menu "Code maturity level options" config EXPERIMENTAL @@ -32,46 +31,64 @@ config EXPERIMENTAL you say Y here, you will be offered the choice of using features or drivers that are currently considered to be in the alpha-test phase. -config CLEAN_COMPILE - bool "Select only drivers expected to compile cleanly" if EXPERIMENTAL - default y - help - Select this option if you don't even want to see the option - to configure known-broken drivers. - - If unsure, say Y - -config STANDALONE - bool "Select only drivers that don't need compile-time external firmware" if EXPERIMENTAL - default y - help - Select this option if you don't have magic firmware for drivers that - need it. - - If unsure, say Y. - config BROKEN bool - depends on !CLEAN_COMPILE - default y config BROKEN_ON_SMP bool depends on BROKEN || !SMP default y -endmenu +config LOCK_KERNEL + bool + depends on SMP || PREEMPT + default y +config INIT_ENV_ARG_LIMIT + int + default 32 if !USERMODE + default 128 if USERMODE + help + Maximum of each of the number of arguments and environment + variables passed to init from the kernel command line. + +endmenu menu "General setup" +config LOCALVERSION + string "Local version - append to kernel release" + help + Append an extra string to the end of your kernel version. + This will show up when you type uname, for example. + The string you set here will be appended after the contents of + any files with a filename matching localversion* in your + object and source tree, in that order. Your total string can + be a maximum of 64 characters. + +config LOCALVERSION_AUTO + bool "Automatically append version information to the version string" + default y + help + This will try to automatically determine if the current tree is a + release tree by looking for git tags that + belong to the current top of tree revision. + + A string of the format -gxxxxxxxx will be added to the localversion + if a git based tree is found. The string generated by this will be + appended after any matching localversion* files, and after the value + set in CONFIG_LOCALVERSION + + Note: This requires Perl, and a git repository, but not necessarily + the git or cogito tools to be installed. + config SWAP bool "Support for paging of anonymous memory (swap)" depends on MMU default y help This option allows you to choose whether you want to have support - for socalled swap devices or swap files in your kernel that are + for so called swap devices or swap files in your kernel that are used to provide more virtual memory than the actual RAM present in your computer. If unsure say Y. @@ -92,7 +109,7 @@ config SYSVIPC config POSIX_MQUEUE bool "POSIX Message Queues" - depends on EXPERIMENTAL + depends on NET && EXPERIMENTAL ---help--- POSIX variant of message queues is a part of IPC. In POSIX message queues every message has a priority which decides about succession @@ -121,6 +138,18 @@ config BSD_PROCESS_ACCT up to the user level program to do useful things with this information. This is generally a good idea, so say Y. +config BSD_PROCESS_ACCT_V3 + bool "BSD Process Accounting version 3 file format" + depends on BSD_PROCESS_ACCT + default n + help + If you say Y here, the process accounting information is written + in a new file format that also logs the process IDs of each + process and it's parent. Note that this file format is incompatible + with previous v0/v1/v2 file formats, so you will need updated tools + for processing it. A preliminary version of these tools is available + at . + config SYSCTL bool "Sysctl support" ---help--- @@ -139,8 +168,7 @@ config SYSCTL config AUDIT bool "Auditing support" - default y if SECURITY_SELINUX - default n + depends on NET help Enable auditing infrastructure that can be used with another kernel subsystem, such as SELinux (which requires this for @@ -149,75 +177,85 @@ config AUDIT config AUDITSYSCALL bool "Enable system-call auditing support" - depends on AUDIT && (X86 || PPC64 || ARCH_S390) + depends on AUDIT && (X86 || PPC || PPC64 || S390 || IA64 || UML || SPARC64) default y if SECURITY_SELINUX - default n help Enable low-overhead system-call auditing infrastructure that can be used independently or with another kernel subsystem, such as SELinux. -config LOG_BUF_SHIFT - int "Kernel log buffer size (16 => 64KB, 17 => 128KB)" if DEBUG_KERNEL - range 12 20 - default 17 if ARCH_S390 - default 16 if X86_NUMAQ || IA64 - default 15 if SMP - default 14 - help - Select kernel log buffer size as a power of 2. - Defaults and Examples: - 17 => 128 KB for S/390 - 16 => 64 KB for x86 NUMAQ or IA-64 - 15 => 32 KB for SMP - 14 => 16 KB for uniprocessor - 13 => 8 KB - 12 => 4 KB - -config HOTPLUG - bool "Support for hot-pluggable devices" if !ARCH_S390 - default ARCH_S390 - help - Say Y here if you want to plug devices into your computer while - the system is running, and be able to use them quickly. In many - cases, the devices can likewise be unplugged at any time too. - - One well known example of this is PCMCIA- or PC-cards, credit-card - size devices such as network cards, modems or hard drives which are - plugged into slots found on all modern laptop computers. Another - example, used on modern desktops as well as laptops, is USB. - - Enable HOTPLUG and KMOD, and build a modular kernel. Get agent - software (at ) and install it. - Then your kernel will automatically call out to a user mode "policy - agent" (/sbin/hotplug) to load modules and set up software needed - to use devices as you hotplug them. - config IKCONFIG bool "Kernel .config support" ---help--- This option enables the complete Linux kernel ".config" file - contents, information on compiler used to build the kernel, - kernel running when this kernel was built and kernel version - from Makefile to be saved in the kernel. It provides documentation + contents to be saved in the kernel. It provides documentation of which kernel options are used in a running kernel or in an on-disk kernel. This information can be extracted from the kernel image file with the script scripts/extract-ikconfig and used as input to rebuild the current kernel or to build another kernel. It can also be extracted from a running kernel by reading - /proc/config.gz and /proc/config_built_with, if enabled (below). - /proc/config.gz will list the configuration that was used - to build the kernel and /proc/config_built_with will list - information on the compiler and host machine that was used to - build the kernel. + /proc/config.gz if enabled (below). config IKCONFIG_PROC bool "Enable access to .config through /proc/config.gz" depends on IKCONFIG && PROC_FS ---help--- - This option enables access to kernel configuration file and build - information through /proc/config.gz. + This option enables access to the kernel configuration file + through /proc/config.gz. + +config CPUSETS + bool "Cpuset support" + depends on SMP + help + This option will let you create and manage CPUSETs which + allow dynamically partitioning a system into sets of CPUs and + Memory Nodes and assigning tasks to run only within those sets. + This is primarily useful on large SMP or NUMA systems. + + Say N if unsure. + +config RELAY + bool "Kernel->user space relay support (formerly relayfs)" + help + This option enables support for relay interface support in + certain file systems (such as debugfs). + It is designed to provide an efficient mechanism for tools and + facilities to relay large amounts of data from kernel space to + user space. + + If unsure, say N. + +source "usr/Kconfig" +config UID16 + bool "Enable 16-bit UID system calls" if EMBEDDED + depends on ARM || CRIS || FRV || H8300 || X86_32 || M68K || (S390 && !64BIT) || SUPERH || SPARC32 || (SPARC64 && SPARC32_COMPAT) || UML || (X86_64 && IA32_EMULATION) + default y + help + This enables the legacy 16-bit UID syscall wrappers. + +config VM86 + depends X86 + default y + bool "Enable VM86 support" if EMBEDDED + help + This option is required by programs like DOSEMU to run 16-bit legacy + code on X86 processors. It also may be needed by software like + XFree86 to initialize some video cards via BIOS. Disabling this + option saves about 6k. + +config CC_OPTIMIZE_FOR_SIZE + bool "Optimize for size (Look out for broken compilers!)" + default y + depends on ARM || H8300 || EXPERIMENTAL + help + Enabling this option will pass "-Os" instead of "-O2" to gcc + resulting in a smaller kernel. + + WARNING: some versions of gcc may generate incorrect code with this + option. If problems are observed, a gcc upgrade may be needed. + + If unsure, say N. menuconfig EMBEDDED bool "Configure standard kernel features (for small systems)" @@ -235,6 +273,72 @@ config KALLSYMS symbolic stack backtraces. This increases the size of the kernel somewhat, as all symbols have to be loaded into the kernel image. +config KALLSYMS_ALL + bool "Include all symbols in kallsyms" + depends on DEBUG_KERNEL && KALLSYMS + help + Normally kallsyms only contains the symbols of functions, for nicer + OOPS messages. Some debuggers can use kallsyms for other + symbols too: say Y here to include all symbols, if you need them + and you don't care about adding 300k to the size of your kernel. + + Say N. + +config KALLSYMS_EXTRA_PASS + bool "Do an extra kallsyms pass" + depends on KALLSYMS + help + If kallsyms is not working correctly, the build will fail with + inconsistent kallsyms data. If that occurs, log a bug report and + turn on KALLSYMS_EXTRA_PASS which should result in a stable build. + Always say N here unless you find a bug in kallsyms, which must be + reported. KALLSYMS_EXTRA_PASS is only a temporary workaround while + you wait for kallsyms to be fixed. + + +config HOTPLUG + bool "Support for hot-pluggable devices" if EMBEDDED + default y + help + This option is provided for the case where no hotplug or uevent + capabilities is wanted by the kernel. You should only consider + disabling this option for embedded systems that do not use modules, a + dynamic /dev tree, or dynamic device discovery. Just say Y. + +config PRINTK + default y + bool "Enable support for printk" if EMBEDDED + help + This option enables normal printk support. Removing it + eliminates most of the message strings from the kernel image + and makes the kernel more or less silent. As this makes it + very difficult to diagnose system problems, saying N here is + strongly discouraged. + +config BUG + bool "BUG() support" if EMBEDDED + default y + help + Disabling this option eliminates support for BUG and WARN, reducing + the size of your kernel image and potentially quietly ignoring + numerous fatal conditions. You should only consider disabling this + option for embedded systems with no facilities for reporting errors. + Just say Y. + +config ELF_CORE + default y + bool "Enable ELF core dumps" if EMBEDDED + help + Enable support for generating core dumps. Disabling saves about 4k. + +config BASE_FULL + default y + bool "Enable full-sized data structures for core" if EMBEDDED + help + Disabling this option reduces the size of miscellaneous core + kernel data structures. This saves memory on small machines, + but may reduce performance. + config FUTEX bool "Enable futex support" if EMBEDDED default y @@ -250,23 +354,43 @@ config EPOLL Disabling this option will cause the kernel to be built without support for epoll family of system calls. -source "drivers/block/Kconfig.iosched" +config SHMEM + bool "Use full shmem filesystem" if EMBEDDED + default y + depends on MMU + help + The shmem is an internal filesystem used to manage shared memory. + It is backed by swap and manages resource limits. It is also exported + to userspace as tmpfs if TMPFS is enabled. Disabling this + option replaces shmem and tmpfs with the much simpler ramfs code, + which may be appropriate on small systems without swap. -config CC_OPTIMIZE_FOR_SIZE - bool "Optimize for size" if EMBEDDED - default y if ARM || H8300 - default n +config SLAB + default y + bool "Use full SLAB allocator" if EMBEDDED help - Enabling this option will pass "-Os" instead of "-O2" to gcc - resulting in a smaller kernel. + Disabling this replaces the advanced SLAB allocator and + kmalloc support with the drastically simpler SLOB allocator. + SLOB is more space efficient but does not scale well and is + more susceptible to fragmentation. - WARNING: some versions of gcc may generate incorrect code with this - option. If problems are observed, a gcc upgrade may be needed. +endmenu # General setup - If unsure, say N. +config TINY_SHMEM + default !SHMEM + bool -endmenu # General setup +config BASE_SMALL + int + default 0 if BASE_FULL + default 1 if !BASE_FULL + +config SLOB + default !SLAB + bool +config OBSOLETE_INTERMODULE + tristate menu "Loadable module support" @@ -309,18 +433,9 @@ config MODULE_FORCE_UNLOAD rmmod). This is mainly for kernel developers and desperate users. If unsure, say N. -config OBSOLETE_MODPARM - bool - default y - depends on MODULES - help - You need this option to use module parameters on modules which - have not been converted to the new module parameter system yet. - If unsure, say Y. - config MODVERSIONS - bool "Module versioning support (EXPERIMENTAL)" - depends on MODULES && EXPERIMENTAL + bool "Module versioning support" + depends on MODULES help Usually, you have to use modules compiled with your kernel. Saying Y here makes it sometimes possible to use modules @@ -329,6 +444,34 @@ config MODVERSIONS make them incompatible with the kernel you are running. If unsure, say N. +config MODULE_SRCVERSION_ALL + bool "Source checksum for all modules" + depends on MODULES + help + Modules which contain a MODULE_VERSION get an extra "srcversion" + field inserted into their modinfo section, which contains a + sum of the source files which made it. This helps maintainers + see exactly which source was used to build a module (since + others sometimes change the module source without updating + the version). With this option, such a "srcversion" field + will be created for all modules. If unsure, say N. + +config MODULE_SIG + bool "Module signature verification (EXPERIMENTAL)" + depends on MODULES && EXPERIMENTAL + select CRYPTO + select CRYPTO_SHA1 + select CRYPTO_SIGNATURE + help + Check modules for valid signatures upon load. + +config MODULE_SIG_FORCE + bool "Required modules to be validly signed (EXPERIMENTAL)" + depends on MODULE_SIG + help + Reject unsigned modules or signed modules for which we don't have a + key. + config KMOD bool "Automatic kernel module loading" depends on MODULES @@ -348,3 +491,7 @@ config STOP_MACHINE help Need stop_machine() primitive. endmenu + +menu "Block layer" +source "block/Kconfig" +endmenu