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authorLinus Torvalds <torvalds@linux-foundation.org>2010-09-10 10:26:27 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-09-10 10:26:27 -0400
commitff3cb3fec3c5bbb5110e652bbdd410bc99a47e9f (patch)
tree5b6834a3a4ecd479d544f8cc8cd10811c1ae13e1 /include/linux/taskstats_kern.h
parent6ccaa3172941c0a97c7f1c5155b1d32ecd27ec2f (diff)
parentbe14eb619108fa8b7120eb2c42d66d5f623ae10e (diff)
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: Range check cpu in blk_cpu_to_group scatterlist: prevent invalid free when alloc fails writeback: Fix lost wake-up shutting down writeback thread writeback: do not lose wakeup events when forking bdi threads cciss: fix reporting of max queue depth since init block: switch s390 tape_block and mg_disk to elevator_change() block: add function call to switch the IO scheduler from a driver fs/bio-integrity.c: return -ENOMEM on kmalloc failure bio-integrity.c: remove dependency on __GFP_NOFAIL BLOCK: fix bio.bi_rw handling block: put dev->kobj in blk_register_queue fail path cciss: handle allocation failure cfq-iosched: Documentation help for new tunables cfq-iosched: blktrace print per slice sector stats cfq-iosched: Implement tunable group_idle cfq-iosched: Do group share accounting in IOPS when slice_idle=0 cfq-iosched: Do not idle if slice_idle=0 cciss: disable doorbell reset on reset_devices blkio: Fix return code for mkdir calls
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config MMU
	def_bool y

config ZONE_DMA
	def_bool y

config LOCKDEP_SUPPORT
	def_bool y

config STACKTRACE_SUPPORT
	def_bool y

config HAVE_LATENCYTOP_SUPPORT
	def_bool y

config RWSEM_GENERIC_SPINLOCK
	bool

config RWSEM_XCHGADD_ALGORITHM
	def_bool y

config ARCH_HAS_ILOG2_U32
	def_bool n

config ARCH_HAS_ILOG2_U64
	def_bool n

config GENERIC_HWEIGHT
	def_bool y

config GENERIC_BUG
	def_bool y if BUG

config GENERIC_BUG_RELATIVE_POINTERS
	def_bool y

config NO_IOMEM
	def_bool y

config NO_DMA
	def_bool y

config ARCH_DMA_ADDR_T_64BIT
	def_bool 64BIT

config GENERIC_LOCKBREAK
	def_bool y if SMP && PREEMPT

config PGSTE
	def_bool y if KVM

config ARCH_SUPPORTS_DEBUG_PAGEALLOC
	def_bool y

config KEXEC
	def_bool y

config AUDIT_ARCH
	def_bool y

config S390
	def_bool y
	select USE_GENERIC_SMP_HELPERS if SMP
	select GENERIC_CPU_DEVICES if !SMP
	select HAVE_SYSCALL_WRAPPERS
	select HAVE_FUNCTION_TRACER
	select HAVE_FUNCTION_TRACE_MCOUNT_TEST
	select HAVE_FTRACE_MCOUNT_RECORD
	select HAVE_C_RECORDMCOUNT
	select HAVE_SYSCALL_TRACEPOINTS
	select SYSCTL_EXCEPTION_TRACE
	select HAVE_DYNAMIC_FTRACE
	select HAVE_FUNCTION_GRAPH_TRACER
	select HAVE_REGS_AND_STACK_ACCESS_API
	select HAVE_OPROFILE
	select HAVE_KPROBES
	select HAVE_KRETPROBES
	select HAVE_KVM if 64BIT
	select HAVE_ARCH_TRACEHOOK
	select INIT_ALL_POSSIBLE
	select HAVE_IRQ_WORK
	select HAVE_PERF_EVENTS
	select ARCH_HAVE_NMI_SAFE_CMPXCHG
	select HAVE_DEBUG_KMEMLEAK
	select HAVE_KERNEL_GZIP
	select HAVE_KERNEL_BZIP2
	select HAVE_KERNEL_LZMA
	select HAVE_KERNEL_LZO
	select HAVE_KERNEL_XZ
	select HAVE_ARCH_MUTEX_CPU_RELAX
	select HAVE_ARCH_JUMP_LABEL if !MARCH_G5
	select HAVE_BPF_JIT if 64BIT && PACK_STACK
	select ARCH_SAVE_PAGE_KEYS if HIBERNATION
	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
	select HAVE_MEMBLOCK
	select HAVE_MEMBLOCK_NODE_MAP
	select HAVE_CMPXCHG_LOCAL
	select HAVE_CMPXCHG_DOUBLE
	select HAVE_ALIGNED_STRUCT_PAGE if SLUB
	select HAVE_VIRT_CPU_ACCOUNTING
	select VIRT_CPU_ACCOUNTING
	select ARCH_DISCARD_MEMBLOCK
	select BUILDTIME_EXTABLE_SORT
	select ARCH_INLINE_SPIN_TRYLOCK
	select ARCH_INLINE_SPIN_TRYLOCK_BH
	select ARCH_INLINE_SPIN_LOCK
	select ARCH_INLINE_SPIN_LOCK_BH
	select ARCH_INLINE_SPIN_LOCK_IRQ
	select ARCH_INLINE_SPIN_LOCK_IRQSAVE
	select ARCH_INLINE_SPIN_UNLOCK
	select ARCH_INLINE_SPIN_UNLOCK_BH
	select ARCH_INLINE_SPIN_UNLOCK_IRQ
	select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
	select ARCH_INLINE_READ_TRYLOCK
	select ARCH_INLINE_READ_LOCK
	select ARCH_INLINE_READ_LOCK_BH
	select ARCH_INLINE_READ_LOCK_IRQ
	select ARCH_INLINE_READ_LOCK_IRQSAVE
	select ARCH_INLINE_READ_UNLOCK
	select ARCH_INLINE_READ_UNLOCK_BH
	select ARCH_INLINE_READ_UNLOCK_IRQ
	select ARCH_INLINE_READ_UNLOCK_IRQRESTORE
	select ARCH_INLINE_WRITE_TRYLOCK
	select ARCH_INLINE_WRITE_LOCK
	select ARCH_INLINE_WRITE_LOCK_BH
	select ARCH_INLINE_WRITE_LOCK_IRQ
	select ARCH_INLINE_WRITE_LOCK_IRQSAVE
	select ARCH_INLINE_WRITE_UNLOCK
	select ARCH_INLINE_WRITE_UNLOCK_BH
	select ARCH_INLINE_WRITE_UNLOCK_IRQ
	select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
	select HAVE_UID16 if 32BIT
	select ARCH_WANT_IPC_PARSE_VERSION
	select HAVE_ARCH_TRANSPARENT_HUGEPAGE if 64BIT
	select GENERIC_SMP_IDLE_THREAD
	select GENERIC_TIME_VSYSCALL_OLD
	select GENERIC_CLOCKEVENTS
	select KTIME_SCALAR if 32BIT
	select HAVE_ARCH_SECCOMP_FILTER
	select GENERIC_KERNEL_THREAD
	select HAVE_MOD_ARCH_SPECIFIC
	select MODULES_USE_ELF_RELA

config SCHED_OMIT_FRAME_POINTER
	def_bool y

source "init/Kconfig"

source "kernel/Kconfig.freezer"

menu "Processor type and features"

config HAVE_MARCH_Z900_FEATURES
	def_bool n

config HAVE_MARCH_Z990_FEATURES
	def_bool n
	select HAVE_MARCH_Z900_FEATURES

config HAVE_MARCH_Z9_109_FEATURES
	def_bool n
	select HAVE_MARCH_Z990_FEATURES

config HAVE_MARCH_Z10_FEATURES
	def_bool n
	select HAVE_MARCH_Z9_109_FEATURES

config HAVE_MARCH_Z196_FEATURES
	def_bool n
	select HAVE_MARCH_Z10_FEATURES

choice
	prompt "Processor type"
	default MARCH_G5

config MARCH_G5
	bool "System/390 model G5 and G6"
	depends on !64BIT
	help
	  Select this to build a 31 bit kernel that works
	  on all ESA/390 and z/Architecture machines.

config MARCH_Z900
	bool "IBM zSeries model z800 and z900"
	select HAVE_MARCH_Z900_FEATURES if 64BIT
	help
	  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 zSeries model z890 and z990"
	select HAVE_MARCH_Z990_FEATURES if 64BIT
	help
	  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"
	select HAVE_MARCH_Z9_109_FEATURES if 64BIT
	help
	  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"
	select HAVE_MARCH_Z10_FEATURES if 64BIT
	help
	  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 114 and 196"
	select HAVE_MARCH_Z196_FEATURES if 64BIT
	help
	  Select this to enable optimizations for IBM zEnterprise 114 and 196
	  (2818 and 2817 series). The kernel will be slightly faster but will
	  not work on older machines.

endchoice

config 64BIT
	def_bool y
	prompt "64 bit kernel"
	help
	  Select this option if you have an IBM z/Architecture machine
	  and want to use the 64 bit addressing mode.

config 32BIT
	def_bool y if !64BIT

config COMPAT
	def_bool y
	prompt "Kernel support for 31 bit emulation"
	depends on 64BIT
	select COMPAT_BINFMT_ELF if BINFMT_ELF
	select ARCH_WANT_OLD_COMPAT_IPC
	help
	  Select this option if you want to enable your system kernel to
	  handle system-calls from ELF binaries for 31 bit ESA.  This option
	  (and some other stuff like libraries and such) is needed for
	  executing 31 bit applications.  It is safe to say "Y".

config SYSVIPC_COMPAT
	def_bool y if COMPAT && SYSVIPC

config KEYS_COMPAT
	def_bool y if COMPAT && KEYS

config SMP
	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
	  you have a system with more than one CPU, say Y.

	  If you say N here, the kernel will run on single and multiprocessor
	  machines, but will use only one CPU of a multiprocessor machine. If
	  you say Y here, the kernel will run on many, but not all,
	  singleprocessor machines. On a singleprocessor machine, the kernel
	  will run faster if you say N here.

	  See also the SMP-HOWTO available at
	  <http://www.tldp.org/docs.html#howto>.

	  Even if you don't know what to do here, say Y.

config NR_CPUS
	int "Maximum number of CPUs (2-64)"
	range 2 64
	depends on SMP
	default "32" if !64BIT
	default "64" if 64BIT
	help
	  This allows you to specify the maximum number of CPUs which this
	  kernel will support.  The maximum supported value is 64 and the
	  minimum value which makes sense is 2.

	  This is purely to save memory - each supported CPU adds
	  approximately sixteen kilobytes to the kernel image.

config HOTPLUG_CPU
	def_bool y
	prompt "Support for hot-pluggable CPUs"
	depends on SMP
	select HOTPLUG
	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_MC
	def_bool n

config SCHED_BOOK
	def_bool y
	prompt "Book scheduler support"
	depends on SMP
	select SCHED_MC
	help
	  Book scheduler support improves the CPU scheduler's decision making
	  when dealing with machines that have several books.

source kernel/Kconfig.preempt

config MATHEMU
	def_bool y
	prompt "IEEE FPU emulation"
	depends on MARCH_G5
	help
	  This option is required for IEEE compliant floating point arithmetic
	  on older ESA/390 machines. Say Y unless you know your machine doesn't
	  need this.

source kernel/Kconfig.hz

endmenu

menu "Memory setup"

config ARCH_SPARSEMEM_ENABLE
	def_bool y
	select SPARSEMEM_VMEMMAP_ENABLE
	select SPARSEMEM_VMEMMAP
	select SPARSEMEM_STATIC if !64BIT

config ARCH_SPARSEMEM_DEFAULT
	def_bool y

config ARCH_SELECT_MEMORY_MODEL
	def_bool y

config ARCH_ENABLE_MEMORY_HOTPLUG
	def_bool y if SPARSEMEM

config ARCH_ENABLE_MEMORY_HOTREMOVE
	def_bool y

config FORCE_MAX_ZONEORDER
	int
	default "9"

source "mm/Kconfig"

config PACK_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
	  the new stack layout which dramatically reduces the minimum stack
	  frame size. With an old compiler a non-leaf function needs a
	  minimum of 96 bytes on 31 bit and 160 bytes on 64 bit. With
	  -mkernel-backchain the minimum size drops to 16 byte on 31 bit
	  and 24 byte on 64 bit.

	  Say Y if you are unsure.

config SMALL_STACK
	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
	  option the kernel will use a smaller kernel stack size. The reduced
	  size is 8kb instead of 16kb. This allows to run more threads on a
	  system and reduces the pressure on the memory management for higher
	  order page allocations.

	  Say N if you are unsure.

config CHECK_STACK
	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
	  it will emit additional code to each function prolog to trigger
	  an illegal operation if the kernel stack is about to overflow.

	  Say N if you are unsure.

config STACK_GUARD
	int "Size of the guard area (128-1024)"
	range 128 1024