init/Kconfig - kernel/msm-4.19 - Gitiles

 menu "Code maturity level options"

 config EXPERIMENTAL
 	bool "Prompt for development and/or incomplete code/drivers"
 	---help---
 	  Some of the various things that Linux supports (such as network
 	  drivers, file systems, network protocols, etc.) can be in a state
 	  of development where the functionality, stability, or the level of
 	  testing is not yet high enough for general use. This is usually
 	  known as the "alpha-test" phase among developers. If a feature is
 	  currently in alpha-test, then the developers usually discourage
 	  uninformed widespread use of this feature by the general public to
 	  avoid "Why doesn't this work?" type mail messages. However, active
 	  testing and use of these systems is welcomed. Just be aware that it
 	  may not meet the normal level of reliability or it may fail to work
 	  in some special cases. Detailed bug reports from people familiar
 	  with the kernel internals are usually welcomed by the developers
 	  (before submitting bug reports, please read the documents
 	  <file:README>, <file:MAINTAINERS>, <file:REPORTING-BUGS>,
 	  <file:Documentation/BUG-HUNTING>, and
 	  <file:Documentation/oops-tracing.txt> in the kernel source).

 	  This option will also make obsoleted drivers available. These are
 	  drivers that have been replaced by something else, and/or are
 	  scheduled to be removed in a future kernel release.

 	  Unless you intend to help test and develop a feature or driver that
 	  falls into this category, or you have a situation that requires
 	  using these features, you should probably say N here, which will
 	  cause the configurator to present you with fewer choices. If
 	  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 BROKEN
 	bool
 	depends on !CLEAN_COMPILE
 	default y

 config BROKEN_ON_SMP
 	bool
 	depends on BROKEN || !SMP
 	default y

 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
 	  used to provide more virtual memory than the actual RAM present
 	  in your computer.  If unsure say Y.

 config SYSVIPC
 	bool "System V IPC"
 	---help---
 	  Inter Process Communication is a suite of library functions and
 	  system calls which let processes (running programs) synchronize and
 	  exchange information. It is generally considered to be a good thing,
 	  and some programs won't run unless you say Y here. In particular, if
 	  you want to run the DOS emulator dosemu under Linux (read the
 	  DOSEMU-HOWTO, available from <http://www.tldp.org/docs.html#howto>),
 	  you'll need to say Y here.

 	  You can find documentation about IPC with "info ipc" and also in
 	  section 6.4 of the Linux Programmer's Guide, available from
 	  <http://www.tldp.org/guides.html>.

 config POSIX_MQUEUE
 	bool "POSIX Message Queues"
 	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
 	  of receiving it by a process. If you want to compile and run
 	  programs written e.g. for Solaris with use of its POSIX message
 	  queues (functions mq_*) say Y here. To use this feature you will
 	  also need mqueue library, available from
 	  <http://www.mat.uni.torun.pl/~wrona/posix_ipc/>

 	  POSIX message queues are visible as a filesystem called 'mqueue'
 	  and can be mounted somewhere if you want to do filesystem
 	  operations on message queues.

 	  If unsure, say Y.

 config BSD_PROCESS_ACCT
 	bool "BSD Process Accounting"
 	help
 	  If you say Y here, a user level program will be able to instruct the
 	  kernel (via a special system call) to write process accounting
 	  information to a file: whenever a process exits, information about
 	  that process will be appended to the file by the kernel.  The
 	  information includes things such as creation time, owning user,
 	  command name, memory usage, controlling terminal etc. (the complete
 	  list is in the struct acct in <file:include/linux/acct.h>).  It is
 	  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---
 	  The sysctl interface provides a means of dynamically changing
 	  certain kernel parameters and variables on the fly without requiring
 	  a recompile of the kernel or reboot of the system.  The primary
 	  interface consists of a system call, but if you say Y to "/proc
 	  file system support", a tree of modifiable sysctl entries will be
 	  generated beneath the /proc/sys directory. They are explained in the
 	  files in <file:Documentation/sysctl/>.  Note that enabling this
 	  option will enlarge the kernel by at least 8 KB.

 	  As it is generally a good thing, you should say Y here unless
 	  building a kernel for install/rescue disks or your system is very
 	  limited in memory.

 config AUDIT
 	bool "Auditing support"
 	depends on NET
 	default y if SECURITY_SELINUX
 	help
 	  Enable auditing infrastructure that can be used with another
 	  kernel subsystem, such as SELinux (which requires this for
 	  logging of avc messages output).  Does not do system-call
 	  auditing without CONFIG_AUDITSYSCALL.

 config AUDITSYSCALL
 	bool "Enable system-call auditing support"
 	depends on AUDIT && (X86 || PPC || PPC64 || S390 || IA64 || UML || SPARC64)
 	default y if SECURITY_SELINUX
 	help
 	  Enable low-overhead system-call auditing infrastructure that
 	  can be used independently or with another kernel subsystem,
 	  such as SELinux.

 config IKCONFIG
 	bool "Kernel .config support"
 	---help---
 	  This option enables the complete Linux kernel ".config" file
 	  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 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 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.

 source "usr/Kconfig"

 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)"
 	help
 	  This option allows certain base kernel options and settings
           to be disabled or tweaked. This is for specialized
           environments which can tolerate a "non-standard" kernel.
           Only use this if you really know what you are doing.

 config KALLSYMS
 	 bool "Load all symbols for debugging/kksymoops" if EMBEDDED
 	 default y
 	 help
 	   Say Y here to let the kernel print out symbolic crash information and
 	   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 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
 	help
 	  Disabling this option will cause the kernel to be built without
 	  support for "fast userspace mutexes".  The resulting kernel may not
 	  run glibc-based applications correctly.

 config EPOLL
 	bool "Enable eventpoll support" if EMBEDDED
 	default y
 	help
 	  Disabling this option will cause the kernel to be built without
 	  support for epoll family of system calls.

 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.

 config SLAB
 	default y
 	bool "Use full SLAB allocator" if EMBEDDED
 	help
 	  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.

 endmenu		# General setup

 config TINY_SHMEM
 	default !SHMEM
 	bool

 config BASE_SMALL
 	int
 	default 0 if BASE_FULL
 	default 1 if !BASE_FULL

 config SLOB
 	default !SLAB
 	bool

 menu "Loadable module support"

 config MODULES
 	bool "Enable loadable module support"
 	help
 	  Kernel modules are small pieces of compiled code which can
 	  be inserted in the running kernel, rather than being
 	  permanently built into the kernel.  You use the "modprobe"
 	  tool to add (and sometimes remove) them.  If you say Y here,
 	  many parts of the kernel can be built as modules (by
 	  answering M instead of Y where indicated): this is most
 	  useful for infrequently used options which are not required
 	  for booting.  For more information, see the man pages for
 	  modprobe, lsmod, modinfo, insmod and rmmod.

 	  If you say Y here, you will need to run "make
 	  modules_install" to put the modules under /lib/modules/
 	  where modprobe can find them (you may need to be root to do
 	  this).

 	  If unsure, say Y.

 config MODULE_UNLOAD
 	bool "Module unloading"
 	depends on MODULES
 	help
 	  Without this option you will not be able to unload any
 	  modules (note that some modules may not be unloadable
 	  anyway), which makes your kernel slightly smaller and
 	  simpler.  If unsure, say Y.

 config MODULE_FORCE_UNLOAD
 	bool "Forced module unloading"
 	depends on MODULE_UNLOAD && EXPERIMENTAL
 	help
 	  This option allows you to force a module to unload, even if the
 	  kernel believes it is unsafe: the kernel will remove the module
 	  without waiting for anyone to stop using it (using the -f option to
 	  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"
 	depends on MODULES
 	help
 	  Usually, you have to use modules compiled with your kernel.
 	  Saying Y here makes it sometimes possible to use modules
 	  compiled for different kernels, by adding enough information
 	  to the modules to (hopefully) spot any changes which would
 	  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
 	help
 	  Normally when you have selected some parts of the kernel to
 	  be created as kernel modules, you must load them (using the
 	  "modprobe" command) before you can use them. If you say Y
 	  here, some parts of the kernel will be able to load modules
 	  automatically: when a part of the kernel needs a module, it
 	  runs modprobe with the appropriate arguments, thereby
 	  loading the module if it is available.  If unsure, say Y.

 config STOP_MACHINE
 	bool
 	default y
 	depends on (SMP && MODULE_UNLOAD) || HOTPLUG_CPU
 	help
 	  Need stop_machine() primitive.
 endmenu

 menu "Block layer"
 source "block/Kconfig"
 endmenu
	menu "Code maturity level options"

	config EXPERIMENTAL
	bool "Prompt for development and/or incomplete code/drivers"
	---help---
	Some of the various things that Linux supports (such as network
	drivers, file systems, network protocols, etc.) can be in a state
	of development where the functionality, stability, or the level of
	testing is not yet high enough for general use. This is usually
	known as the "alpha-test" phase among developers. If a feature is
	currently in alpha-test, then the developers usually discourage
	uninformed widespread use of this feature by the general public to
	avoid "Why doesn't this work?" type mail messages. However, active
	testing and use of these systems is welcomed. Just be aware that it
	may not meet the normal level of reliability or it may fail to work
	in some special cases. Detailed bug reports from people familiar
	with the kernel internals are usually welcomed by the developers
	(before submitting bug reports, please read the documents
	<file:README>, <file:MAINTAINERS>, <file:REPORTING-BUGS>,
	<file:Documentation/BUG-HUNTING>, and
	<file:Documentation/oops-tracing.txt> in the kernel source).

	This option will also make obsoleted drivers available. These are
	drivers that have been replaced by something else, and/or are
	scheduled to be removed in a future kernel release.

	Unless you intend to help test and develop a feature or driver that
	falls into this category, or you have a situation that requires
	using these features, you should probably say N here, which will
	cause the configurator to present you with fewer choices. If
	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 BROKEN
	bool
	depends on !CLEAN_COMPILE
	default y

	config BROKEN_ON_SMP
	bool
	depends on BROKEN \|\| !SMP
	default y

	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
	used to provide more virtual memory than the actual RAM present
	in your computer. If unsure say Y.

	config SYSVIPC
	bool "System V IPC"
	---help---
	Inter Process Communication is a suite of library functions and
	system calls which let processes (running programs) synchronize and
	exchange information. It is generally considered to be a good thing,
	and some programs won't run unless you say Y here. In particular, if
	you want to run the DOS emulator dosemu under Linux (read the
	DOSEMU-HOWTO, available from <http://www.tldp.org/docs.html#howto>),
	you'll need to say Y here.

	You can find documentation about IPC with "info ipc" and also in
	section 6.4 of the Linux Programmer's Guide, available from
	<http://www.tldp.org/guides.html>.

	config POSIX_MQUEUE
	bool "POSIX Message Queues"
	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
	of receiving it by a process. If you want to compile and run
	programs written e.g. for Solaris with use of its POSIX message
	queues (functions mq_*) say Y here. To use this feature you will
	also need mqueue library, available from
	<http://www.mat.uni.torun.pl/~wrona/posix_ipc/>

	POSIX message queues are visible as a filesystem called 'mqueue'
	and can be mounted somewhere if you want to do filesystem
	operations on message queues.

	If unsure, say Y.

	config BSD_PROCESS_ACCT
	bool "BSD Process Accounting"
	help
	If you say Y here, a user level program will be able to instruct the
	kernel (via a special system call) to write process accounting
	information to a file: whenever a process exits, information about
	that process will be appended to the file by the kernel. The
	information includes things such as creation time, owning user,
	command name, memory usage, controlling terminal etc. (the complete
	list is in the struct acct in <file:include/linux/acct.h>). It is
	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---
	The sysctl interface provides a means of dynamically changing
	certain kernel parameters and variables on the fly without requiring
	a recompile of the kernel or reboot of the system. The primary
	interface consists of a system call, but if you say Y to "/proc
	file system support", a tree of modifiable sysctl entries will be
	generated beneath the /proc/sys directory. They are explained in the
	files in <file:Documentation/sysctl/>. Note that enabling this
	option will enlarge the kernel by at least 8 KB.

	As it is generally a good thing, you should say Y here unless
	building a kernel for install/rescue disks or your system is very
	limited in memory.

	config AUDIT
	bool "Auditing support"
	depends on NET
	default y if SECURITY_SELINUX
	help
	Enable auditing infrastructure that can be used with another
	kernel subsystem, such as SELinux (which requires this for
	logging of avc messages output). Does not do system-call
	auditing without CONFIG_AUDITSYSCALL.

	config AUDITSYSCALL
	bool "Enable system-call auditing support"
	depends on AUDIT && (X86 \|\| PPC \|\| PPC64 \|\| S390 \|\| IA64 \|\| UML \|\| SPARC64)
	default y if SECURITY_SELINUX
	help
	Enable low-overhead system-call auditing infrastructure that
	can be used independently or with another kernel subsystem,
	such as SELinux.

	config IKCONFIG
	bool "Kernel .config support"
	---help---
	This option enables the complete Linux kernel ".config" file
	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 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 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.

	source "usr/Kconfig"

	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)"
	help
	This option allows certain base kernel options and settings
	to be disabled or tweaked. This is for specialized
	environments which can tolerate a "non-standard" kernel.
	Only use this if you really know what you are doing.

	config KALLSYMS
	bool "Load all symbols for debugging/kksymoops" if EMBEDDED
	default y
	help
	Say Y here to let the kernel print out symbolic crash information and
	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 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
	help
	Disabling this option will cause the kernel to be built without
	support for "fast userspace mutexes". The resulting kernel may not
	run glibc-based applications correctly.

	config EPOLL
	bool "Enable eventpoll support" if EMBEDDED
	default y
	help
	Disabling this option will cause the kernel to be built without
	support for epoll family of system calls.

	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.

	config SLAB
	default y
	bool "Use full SLAB allocator" if EMBEDDED
	help
	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.

	endmenu # General setup

	config TINY_SHMEM
	default !SHMEM
	bool

	config BASE_SMALL
	int
	default 0 if BASE_FULL
	default 1 if !BASE_FULL

	config SLOB
	default !SLAB
	bool

	menu "Loadable module support"

	config MODULES
	bool "Enable loadable module support"
	help
	Kernel modules are small pieces of compiled code which can
	be inserted in the running kernel, rather than being
	permanently built into the kernel. You use the "modprobe"
	tool to add (and sometimes remove) them. If you say Y here,
	many parts of the kernel can be built as modules (by
	answering M instead of Y where indicated): this is most
	useful for infrequently used options which are not required
	for booting. For more information, see the man pages for
	modprobe, lsmod, modinfo, insmod and rmmod.

	If you say Y here, you will need to run "make
	modules_install" to put the modules under /lib/modules/
	where modprobe can find them (you may need to be root to do
	this).

	If unsure, say Y.

	config MODULE_UNLOAD
	bool "Module unloading"
	depends on MODULES
	help
	Without this option you will not be able to unload any
	modules (note that some modules may not be unloadable
	anyway), which makes your kernel slightly smaller and
	simpler. If unsure, say Y.

	config MODULE_FORCE_UNLOAD
	bool "Forced module unloading"
	depends on MODULE_UNLOAD && EXPERIMENTAL
	help
	This option allows you to force a module to unload, even if the
	kernel believes it is unsafe: the kernel will remove the module
	without waiting for anyone to stop using it (using the -f option to
	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"
	depends on MODULES
	help
	Usually, you have to use modules compiled with your kernel.
	Saying Y here makes it sometimes possible to use modules
	compiled for different kernels, by adding enough information
	to the modules to (hopefully) spot any changes which would
	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
	help
	Normally when you have selected some parts of the kernel to
	be created as kernel modules, you must load them (using the
	"modprobe" command) before you can use them. If you say Y
	here, some parts of the kernel will be able to load modules
	automatically: when a part of the kernel needs a module, it
	runs modprobe with the appropriate arguments, thereby
	loading the module if it is available. If unsure, say Y.

	config STOP_MACHINE
	bool
	default y
	depends on (SMP && MODULE_UNLOAD) \|\| HOTPLUG_CPU
	help
	Need stop_machine() primitive.
	endmenu

	menu "Block layer"
	source "block/Kconfig"
	endmenu