-
menu "Code maturity level options"
config EXPERIMENTAL
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
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
+ This is the value of the two limits on the number of argument and of
+ env.var 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 SWAP
bool "Support for paging of anonymous memory (swap)"
depends on MMU
config SYSVIPC
bool "System V IPC"
+ depends on MMU
---help---
Inter Process Communication is a suite of library functions and
system calls which let processes (running programs) synchronize and
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 <http://www.physik3.uni-rostock.de/tim/kernel/utils/acct/>.
+
config SYSCTL
bool "Sysctl support"
---help---
config AUDIT
bool "Auditing support"
default y if SECURITY_SELINUX
- default n
help
Enable auditing infrastructure that can be used with another
kernel subsystem, such as SELinux (which requires this for
config AUDITSYSCALL
bool "Enable system-call auditing support"
- depends on AUDIT && (X86 || PPC64 || ARCH_S390)
+ depends on AUDIT && (X86 || PPC64 || ARCH_S390 || IA64 || UML)
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.
+ This option is provided for the case where no in-kernel-tree
+ modules require HOTPLUG functionality, but a module built
+ outside the kernel tree does. Such modules require Y here.
- 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 <http://linux-hotplug.sourceforge.net/>) 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 KOBJECT_UEVENT
+ bool "Kernel Userspace Events"
+ depends on NET
+ default y
+ help
+ This option enables the kernel userspace event layer, which is a
+ simple mechanism for kernel-to-user communication over a netlink
+ socket.
+ The goal of the kernel userspace events layer is to provide a simple
+ and efficient events system, that notifies userspace about kobject
+ state changes. This will enable applications to just listen for
+ events instead of polling system devices and files.
+ Hotplug events (kobject addition and removal) are also available on
+ the netlink socket in addition to the execution of /sbin/hotplug if
+ CONFIG_HOTPLUG is enabled.
+
+ Say Y, unless you are building a system requiring minimal memory
+ consumption.
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 options will let you create and manage CPUSET's 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.
menuconfig EMBEDDED
bool "Configure standard kernel features (for small systems)"
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 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 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
Disabling this option will cause the kernel to be built without
support for epoll family of system calls.
-source "drivers/block/Kconfig.iosched"
-
config CC_OPTIMIZE_FOR_SIZE
bool "Optimize for size" if EMBEDDED
default y if ARM || H8300
- default n
help
Enabling this option will pass "-Os" instead of "-O2" to gcc
resulting in a smaller kernel.
If unsure, say N.
+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_ALIGN_FUNCTIONS
+ int "Function alignment" if EMBEDDED
+ default 0
+ help
+ Align the start of functions to the next power-of-two greater than n,
+ skipping up to n bytes. For instance, 32 aligns functions
+ to the next 32-byte boundary, but 24 would align to the next
+ 32-byte boundary only if this can be done by skipping 23 bytes or less.
+ Zero means use compiler's default.
+
+config CC_ALIGN_LABELS
+ int "Label alignment" if EMBEDDED
+ default 0
+ help
+ Align all branch targets to a power-of-two boundary, skipping
+ up to n bytes like ALIGN_FUNCTIONS. This option can easily
+ make code slower, because it must insert dummy operations for
+ when the branch target is reached in the usual flow of the code.
+ Zero means use compiler's default.
+
+config CC_ALIGN_LOOPS
+ int "Loop alignment" if EMBEDDED
+ default 0
+ help
+ Align loops to a power-of-two boundary, skipping up to n bytes.
+ Zero means use compiler's default.
+
+config CC_ALIGN_JUMPS
+ int "Jump alignment" if EMBEDDED
+ default 0
+ help
+ Align branch targets to a power-of-two boundary, for branch
+ targets where the targets can only be reached by jumping,
+ skipping up to n bytes like ALIGN_FUNCTIONS. In this case,
+ no dummy operations need be executed.
+ Zero means use compiler's default.
+
endmenu # General setup
+config TINY_SHMEM
+ default !SHMEM
+ bool
+
+config BASE_SMALL
+ int
+ default 0 if BASE_FULL
+ default 1 if !BASE_FULL
menu "Loadable module support"
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 KMOD
bool "Automatic kernel module loading"
depends on MODULES
git://git.onelab.eu / linux-2.6.git / blobdiff