-#
-# For a description of the syntax of this configuration file,
-# see Documentation/kbuild/kconfig-language.txt.
-#
-
-config SCHED_MC
- def_bool y
- depends on SMP
-
config MMU
def_bool y
config ZONE_DMA
def_bool y
- depends on 64BIT
config LOCKDEP_SUPPORT
def_bool y
def_bool y
config ARCH_HAS_ILOG2_U32
- bool
- default n
+ def_bool n
config ARCH_HAS_ILOG2_U64
- bool
- default n
+ def_bool n
config GENERIC_HWEIGHT
def_bool y
def_bool y
config GENERIC_BUG
- bool
- depends on BUG
- default y
+ def_bool y if BUG
config GENERIC_BUG_RELATIVE_POINTERS
def_bool y
config NO_DMA
def_bool y
+config ARCH_DMA_ADDR_T_64BIT
+ def_bool 64BIT
+
config GENERIC_LOCKBREAK
- bool
- default y
- depends on SMP && PREEMPT
+ def_bool y if SMP && PREEMPT
config PGSTE
- bool
- default y if KVM
+ def_bool y if KVM
config VIRT_CPU_ACCOUNTING
def_bool y
config ARCH_SUPPORTS_DEBUG_PAGEALLOC
def_bool y
-mainmenu "Linux Kernel Configuration"
-
config S390
def_bool y
select USE_GENERIC_SMP_HELPERS if SMP
select HAVE_FUNCTION_TRACER
select HAVE_FUNCTION_TRACE_MCOUNT_TEST
select HAVE_FTRACE_MCOUNT_RECORD
+ select HAVE_C_RECORDMCOUNT
select HAVE_SYSCALL_TRACEPOINTS
select HAVE_DYNAMIC_FTRACE
select HAVE_FUNCTION_GRAPH_TRACER
select HAVE_REGS_AND_STACK_ACCESS_API
- select HAVE_DEFAULT_NO_SPIN_MUTEXES
select HAVE_OPROFILE
select HAVE_KPROBES
select HAVE_KRETPROBES
select HAVE_KERNEL_BZIP2
select HAVE_KERNEL_LZMA
select HAVE_KERNEL_LZO
+ select HAVE_KERNEL_XZ
select HAVE_GET_USER_PAGES_FAST
+ select HAVE_ARCH_MUTEX_CPU_RELAX
+ select HAVE_ARCH_JUMP_LABEL if !MARCH_G5
+ select HAVE_RCU_TABLE_FREE if SMP
select ARCH_INLINE_SPIN_TRYLOCK
select ARCH_INLINE_SPIN_TRYLOCK_BH
select ARCH_INLINE_SPIN_LOCK
select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
config SCHED_OMIT_FRAME_POINTER
- bool
- default y
+ def_bool y
source "init/Kconfig"
source "kernel/time/Kconfig"
config 64BIT
- bool "64 bit kernel"
+ def_bool y
+ prompt "64 bit kernel"
help
- Select this option if you have a 64 bit IBM zSeries machine
+ Select this option if you have an IBM z/Architecture machine
and want to use the 64 bit addressing mode.
config 32BIT
- bool
- default y if !64BIT
+ def_bool y if !64BIT
config KTIME_SCALAR
def_bool 32BIT
config SMP
- bool "Symmetric multi-processing support"
+ def_bool y
+ prompt "Symmetric multi-processing support"
---help---
This enables support for systems with more than one CPU. If you have
a system with only one CPU, like most personal computers, say N. If
approximately sixteen kilobytes to the kernel image.
config HOTPLUG_CPU
- bool "Support for hot-pluggable CPUs"
+ def_bool y
+ prompt "Support for hot-pluggable CPUs"
depends on SMP
select HOTPLUG
- default n
help
Say Y here to be able to turn CPUs off and on. CPUs
can be controlled through /sys/devices/system/cpu/cpu#.
Say N if you want to disable CPU hotplug.
-config SCHED_BOOK
- bool "Book scheduler support"
+config SCHED_MC
+ def_bool y
+ prompt "Multi-core scheduler support"
depends on SMP
+ help
+ Multi-core scheduler support improves the CPU scheduler's decision
+ making when dealing with multi-core CPU chips at a cost of slightly
+ increased overhead in some places.
+
+config SCHED_BOOK
+ def_bool y
+ prompt "Book scheduler support"
+ depends on SMP && SCHED_MC
help
Book scheduler support improves the CPU scheduler's decision making
when dealing with machines that have several books.
config MATHEMU
- bool "IEEE FPU emulation"
+ def_bool y
+ prompt "IEEE FPU emulation"
depends on MARCH_G5
help
This option is required for IEEE compliant floating point arithmetic
- on older S/390 machines. Say Y unless you know your machine doesn't
+ on older ESA/390 machines. Say Y unless you know your machine doesn't
need this.
config COMPAT
- bool "Kernel support for 31 bit emulation"
+ def_bool y
+ prompt "Kernel support for 31 bit emulation"
depends on 64BIT
select COMPAT_BINFMT_ELF
help
executing 31 bit applications. It is safe to say "Y".
config SYSVIPC_COMPAT
- bool
- depends on COMPAT && SYSVIPC
- default y
+ def_bool y if COMPAT && SYSVIPC
config AUDIT_ARCH
- bool
- default y
-
-config S390_EXEC_PROTECT
- bool "Data execute protection"
- help
- This option allows to enable a buffer overflow protection for user
- space programs and it also selects the addressing mode option above.
- The kernel parameter noexec=on will enable this feature and also
- switch the addressing modes, default is disabled. Enabling this (via
- kernel parameter) on machines earlier than IBM System z9-109 EC/BC
- will reduce system performance.
+ def_bool y
comment "Code generation options"
default MARCH_G5
config MARCH_G5
- bool "S/390 model G5 and G6"
+ bool "System/390 model G5 and G6"
depends on !64BIT
help
Select this to build a 31 bit kernel that works
- on all S/390 and zSeries machines.
+ on all ESA/390 and z/Architecture machines.
config MARCH_Z900
- bool "IBM eServer zSeries model z800 and z900"
+ bool "IBM zSeries model z800 and z900"
help
- Select this to optimize for zSeries machines. This
- will enable some optimizations that are not available
- on older 31 bit only CPUs.
+ Select this to enable optimizations for model z800/z900 (2064 and
+ 2066 series). This will enable some optimizations that are not
+ available on older ESA/390 (31 Bit) only CPUs.
config MARCH_Z990
- bool "IBM eServer zSeries model z890 and z990"
+ bool "IBM zSeries model z890 and z990"
help
- Select this enable optimizations for model z890/z990.
- This will be slightly faster but does not work on
- older machines such as the z900.
+ Select this to enable optimizations for model z890/z990 (2084 and
+ 2086 series). The kernel will be slightly faster but will not work
+ on older machines.
config MARCH_Z9_109
bool "IBM System z9"
help
- Select this to enable optimizations for IBM System z9-109, IBM
- System z9 Enterprise Class (z9 EC), and IBM System z9 Business
- Class (z9 BC). The kernel will be slightly faster but will not
- work on older machines such as the z990, z890, z900, and z800.
+ Select this to enable optimizations for IBM System z9 (2094 and
+ 2096 series). The kernel will be slightly faster but will not work
+ on older machines.
config MARCH_Z10
bool "IBM System z10"
help
- Select this to enable optimizations for IBM System z10. The
- kernel will be slightly faster but will not work on older
- machines such as the z990, z890, z900, z800, z9-109, z9-ec
- and z9-bc.
+ Select this to enable optimizations for IBM System z10 (2097 and
+ 2098 series). The kernel will be slightly faster but will not work
+ on older machines.
config MARCH_Z196
bool "IBM zEnterprise 196"
help
- Select this to enable optimizations for IBM zEnterprise 196.
- The kernel will be slightly faster but will not work on older
- machines such as the z990, z890, z900, z800, z9-109, z9-ec,
- z9-bc, z10-ec and z10-bc.
+ Select this to enable optimizations for IBM zEnterprise 196
+ (2817 series). The kernel will be slightly faster but will not work
+ on older machines.
endchoice
config PACK_STACK
- bool "Pack kernel stack"
+ def_bool y
+ prompt "Pack kernel stack"
help
This option enables the compiler option -mkernel-backchain if it
is available. If the option is available the compiler supports
Say Y if you are unsure.
config SMALL_STACK
- bool "Use 8kb for kernel stack instead of 16kb"
+ def_bool n
+ prompt "Use 8kb for kernel stack instead of 16kb"
depends on PACK_STACK && 64BIT && !LOCKDEP
help
If you say Y here and the compiler supports the -mkernel-backchain
Say N if you are unsure.
config CHECK_STACK
- bool "Detect kernel stack overflow"
+ def_bool y
+ prompt "Detect kernel stack overflow"
help
This option enables the compiler option -mstack-guard and
-mstack-size if they are available. If the compiler supports them
The minimum size for the stack guard should be 256 for 31 bit and
512 for 64 bit.
-config WARN_STACK
- bool "Emit compiler warnings for function with broken stack usage"
+config WARN_DYNAMIC_STACK
+ def_bool n
+ prompt "Emit compiler warnings for function with dynamic stack usage"
help
- This option enables the compiler options -mwarn-framesize and
- -mwarn-dynamicstack. If the compiler supports these options it
- will generate warnings for function which either use alloca or
- create a stack frame bigger than CONFIG_WARN_STACK_SIZE.
+ This option enables the compiler option -mwarn-dynamicstack. If the
+ compiler supports this options generates warnings for functions
+ that dynamically allocate stack space using alloca.
Say N if you are unsure.
-config WARN_STACK_SIZE
- int "Maximum frame size considered safe (128-2048)"
- range 128 2048
- depends on WARN_STACK
- default "2048"
- help
- This allows you to specify the maximum frame size a function may
- have without the compiler complaining about it.
-
config ARCH_POPULATES_NODE_MAP
def_bool y
def_bool y
config ARCH_SELECT_MEMORY_MODEL
- def_bool y
+ def_bool y
config ARCH_ENABLE_MEMORY_HOTPLUG
- def_bool y
- depends on SPARSEMEM
+ def_bool y if SPARSEMEM
config ARCH_ENABLE_MEMORY_HOTREMOVE
def_bool y
config ARCH_HIBERNATION_POSSIBLE
- def_bool y if 64BIT
+ def_bool y if 64BIT
source "mm/Kconfig"
comment "I/O subsystem configuration"
config QDIO
- tristate "QDIO support"
+ def_tristate y
+ prompt "QDIO support"
---help---
This driver provides the Queued Direct I/O base support for
IBM System z.
If unsure, say Y.
config CHSC_SCH
- tristate "Support for CHSC subchannels"
+ def_tristate m
+ prompt "Support for CHSC subchannels"
help
This driver allows usage of CHSC subchannels. A CHSC subchannel
is usually present on LPAR only.
comment "Misc"
config IPL
- bool "Builtin IPL record support"
+ def_bool y
+ prompt "Builtin IPL record support"
help
If you want to use the produced kernel to IPL directly from a
device, you have to merge a bootsector specific to the device
default "9"
config PFAULT
- bool "Pseudo page fault support"
+ def_bool y
+ prompt "Pseudo page fault support"
help
Select this option, if you want to use PFAULT pseudo page fault
handling under VM. If running native or in LPAR, this option
this option.
config SHARED_KERNEL
- bool "VM shared kernel support"
+ def_bool y
+ prompt "VM shared kernel support"
help
Select this option, if you want to share the text segment of the
Linux kernel between different VM guests. This reduces memory
doing and want to exploit this feature.
config CMM
- tristate "Cooperative memory management"
+ def_tristate n
+ prompt "Cooperative memory management"
help
Select this option, if you want to enable the kernel interface
to reduce the memory size of the system. This is accomplished
option.
config CMM_IUCV
- bool "IUCV special message interface to cooperative memory management"
+ def_bool y
+ prompt "IUCV special message interface to cooperative memory management"
depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV)
help
Select this option to enable the special message interface to
the cooperative memory management.
config APPLDATA_BASE
- bool "Linux - VM Monitor Stream, base infrastructure"
+ def_bool n
+ prompt "Linux - VM Monitor Stream, base infrastructure"
depends on PROC_FS
help
This provides a kernel interface for creating and updating z/VM APPLDATA
The /proc entries can also be read from, showing the current settings.
config APPLDATA_MEM
- tristate "Monitor memory management statistics"
+ def_tristate m
+ prompt "Monitor memory management statistics"
depends on APPLDATA_BASE && VM_EVENT_COUNTERS
help
This provides memory management related data to the Linux - VM Monitor
appldata_mem.o.
config APPLDATA_OS
- tristate "Monitor OS statistics"
+ def_tristate m
+ prompt "Monitor OS statistics"
depends on APPLDATA_BASE
help
This provides OS related data to the Linux - VM Monitor Stream, like
appldata_os.o.
config APPLDATA_NET_SUM
- tristate "Monitor overall network statistics"
+ def_tristate m
+ prompt "Monitor overall network statistics"
depends on APPLDATA_BASE && NET
help
This provides network related data to the Linux - VM Monitor Stream,
source kernel/Kconfig.hz
config S390_HYPFS_FS
- bool "s390 hypervisor file system support"
+ def_bool y
+ prompt "s390 hypervisor file system support"
select SYS_HYPERVISOR
- default y
help
This is a virtual file system intended to provide accounting
information in an s390 hypervisor environment.
config KEXEC
- bool "kexec system call"
+ def_bool n
+ prompt "kexec system call"
help
kexec is a system call that implements the ability to shutdown your
current kernel, and to start another kernel. It is like a reboot
but is independent of hardware/microcode support.
config ZFCPDUMP
- bool "zfcpdump support"
+ def_bool n
+ prompt "zfcpdump support"
select SMP
- default n
help
Select this option if you want to build an zfcpdump enabled kernel.
Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this.
config S390_GUEST
-bool "s390 guest support for KVM (EXPERIMENTAL)"
+ def_bool y
+ prompt "s390 guest support for KVM (EXPERIMENTAL)"
depends on 64BIT && EXPERIMENTAL
+ select VIRTUALIZATION
select VIRTIO
select VIRTIO_RING
select VIRTIO_CONSOLE
the default console.
config SECCOMP
- bool "Enable seccomp to safely compute untrusted bytecode"
+ def_bool y
+ prompt "Enable seccomp to safely compute untrusted bytecode"
depends on PROC_FS
- default y
help
This kernel feature is useful for number crunching applications
that may need to compute untrusted bytecode during their
Code Review / linux-2.6.git / blobdiff