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- config ALPHA
- bool
- default y
- select ARCH_MIGHT_HAVE_PC_PARPORT
- select ARCH_MIGHT_HAVE_PC_SERIO
- select ARCH_USE_CMPXCHG_LOCKREF
- select HAVE_AOUT
- select HAVE_IDE
- select HAVE_OPROFILE
- select HAVE_PCSPKR_PLATFORM
- select HAVE_PERF_EVENTS
- select HAVE_DMA_ATTRS
- select VIRT_TO_BUS
- select GENERIC_IRQ_PROBE
- select AUTO_IRQ_AFFINITY if SMP
- select GENERIC_IRQ_SHOW
- select ARCH_WANT_OPTIONAL_GPIOLIB
- select ARCH_WANT_IPC_PARSE_VERSION
- select ARCH_HAVE_NMI_SAFE_CMPXCHG
- select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
- select AUDIT_ARCH
- select GENERIC_CLOCKEVENTS
- select GENERIC_SMP_IDLE_THREAD
- select GENERIC_STRNCPY_FROM_USER
- select GENERIC_STRNLEN_USER
- select HAVE_ARCH_AUDITSYSCALL
- select HAVE_MOD_ARCH_SPECIFIC
- select MODULES_USE_ELF_RELA
- select ODD_RT_SIGACTION
- select OLD_SIGSUSPEND
- help
- The Alpha is a 64-bit general-purpose processor designed and
- marketed by the Digital Equipment Corporation of blessed memory,
- now Hewlett-Packard. The Alpha Linux project has a home page at
- <http://www.alphalinux.org/>.
- config 64BIT
- def_bool y
- config MMU
- bool
- default y
- config RWSEM_GENERIC_SPINLOCK
- bool
- config RWSEM_XCHGADD_ALGORITHM
- bool
- default y
- config ARCH_HAS_ILOG2_U32
- bool
- default n
- config ARCH_HAS_ILOG2_U64
- bool
- default n
- config GENERIC_CALIBRATE_DELAY
- bool
- default y
- config ZONE_DMA
- bool
- default y
- config ARCH_DMA_ADDR_T_64BIT
- def_bool y
- config NEED_DMA_MAP_STATE
- def_bool y
- config NEED_SG_DMA_LENGTH
- def_bool y
- config GENERIC_ISA_DMA
- bool
- default y
- config PGTABLE_LEVELS
- int
- default 3
- source "init/Kconfig"
- source "kernel/Kconfig.freezer"
- config AUDIT_ARCH
- bool
- menu "System setup"
- choice
- prompt "Alpha system type"
- default ALPHA_GENERIC
- ---help---
- This is the system type of your hardware. A "generic" kernel will
- run on any supported Alpha system. However, if you configure a
- kernel for your specific system, it will be faster and smaller.
- To find out what type of Alpha system you have, you may want to
- check out the Linux/Alpha FAQ, accessible on the WWW from
- <http://www.alphalinux.org/>. In summary:
- Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
- Alpha-XL XL-233, XL-266
- AlphaBook1 Alpha laptop
- Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
- Cabriolet AlphaPC64, AlphaPCI64
- DP264 DP264 / DS20 / ES40 / DS10 / DS10L
- EB164 EB164 21164 evaluation board
- EB64+ EB64+ 21064 evaluation board
- EB66 EB66 21066 evaluation board
- EB66+ EB66+ 21066 evaluation board
- Jensen DECpc 150, DEC 2000 models 300, 500
- LX164 AlphaPC164-LX
- Lynx AS 2100A
- Miata Personal Workstation 433/500/600 a/au
- Marvel AlphaServer ES47 / ES80 / GS1280
- Mikasa AS 1000
- Noname AXPpci33, UDB (Multia)
- Noritake AS 1000A, AS 600A, AS 800
- PC164 AlphaPC164
- Rawhide AS 1200, AS 4000, AS 4100
- Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
- SX164 AlphaPC164-SX
- Sable AS 2000, AS 2100
- Shark DS 20L
- Takara Takara (OEM)
- Titan AlphaServer ES45 / DS25 / DS15
- Wildfire AlphaServer GS 40/80/160/320
- If you don't know what to do, choose "generic".
- config ALPHA_GENERIC
- bool "Generic"
- depends on TTY
- help
- A generic kernel will run on all supported Alpha hardware.
- config ALPHA_ALCOR
- bool "Alcor/Alpha-XLT"
- help
- For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
- slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
- Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
- controller (256-bit memory bus) and a PCI interface. It also does
- all the work required to support an external Bcache and to maintain
- memory coherence when a PCI device DMAs into (or out of) memory.
- config ALPHA_XL
- bool "Alpha-XL"
- help
- XL-233 and XL-266-based Alpha systems.
- config ALPHA_BOOK1
- bool "AlphaBook1"
- help
- Dec AlphaBook1/Burns Alpha-based laptops.
- config ALPHA_AVANTI_CH
- bool "Avanti"
- config ALPHA_CABRIOLET
- bool "Cabriolet"
- help
- Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
- baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
- slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
- Bcache SIMMs. Requires power supply with 3.3V output.
- config ALPHA_DP264
- bool "DP264"
- help
- Various 21264 systems with the tsunami core logic chipset.
- API Networks: 264DP, UP2000(+), CS20;
- Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
- config ALPHA_EB164
- bool "EB164"
- help
- EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
- ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
- shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
- Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
- MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
- motherboard. Requires power supply with 3.3V output.
- config ALPHA_EB64P_CH
- bool "EB64+"
- config ALPHA_EB66
- bool "EB66"
- help
- A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
- identical to EB64+. Baby PC-AT size. Runs from standard PC power
- supply. The EB66 schematic was published as a marketing poster
- advertising the 21066 as "the first microprocessor in the world with
- embedded PCI".
- config ALPHA_EB66P
- bool "EB66+"
- help
- Later variant of the EB66 board.
- config ALPHA_EIGER
- bool "Eiger"
- help
- Apparently an obscure OEM single-board computer based on the
- Typhoon/Tsunami chipset family. Information on it is scanty.
- config ALPHA_JENSEN
- bool "Jensen"
- help
- DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
- of the first-generation Alpha systems. A number of these systems
- seem to be available on the second- hand market. The Jensen is a
- floor-standing tower system which originally used a 150MHz 21064 It
- used programmable logic to interface a 486 EISA I/O bridge to the
- CPU.
- config ALPHA_LX164
- bool "LX164"
- help
- A technical overview of this board is available at
- <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
- config ALPHA_LYNX
- bool "Lynx"
- help
- AlphaServer 2100A-based systems.
- config ALPHA_MARVEL
- bool "Marvel"
- help
- AlphaServer ES47 / ES80 / GS1280 based on EV7.
- config ALPHA_MIATA
- bool "Miata"
- help
- The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
- or 600au).
- config ALPHA_MIKASA
- bool "Mikasa"
- help
- AlphaServer 1000-based Alpha systems.
- config ALPHA_NAUTILUS
- bool "Nautilus"
- help
- Alpha systems based on the AMD 751 & ALI 1543C chipsets.
- config ALPHA_NONAME_CH
- bool "Noname"
- config ALPHA_NORITAKE
- bool "Noritake"
- help
- AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
- systems.
- config ALPHA_PC164
- bool "PC164"
- config ALPHA_P2K
- bool "Platform2000"
- config ALPHA_RAWHIDE
- bool "Rawhide"
- help
- AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
- See HOWTO at
- <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
- config ALPHA_RUFFIAN
- bool "Ruffian"
- help
- Samsung APC164UX. There is a page on known problems and workarounds
- at <http://www.alphalinux.org/faq/FAQ-11.html>.
- config ALPHA_RX164
- bool "RX164"
- config ALPHA_SX164
- bool "SX164"
- config ALPHA_SABLE
- bool "Sable"
- help
- Digital AlphaServer 2000 and 2100-based systems.
- config ALPHA_SHARK
- bool "Shark"
- config ALPHA_TAKARA
- bool "Takara"
- help
- Alpha 11164-based OEM single-board computer.
- config ALPHA_TITAN
- bool "Titan"
- help
- AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
- config ALPHA_WILDFIRE
- bool "Wildfire"
- help
- AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
- endchoice
- # clear all implied options (don't want default values for those):
- # Most of these machines have ISA slots; not exactly sure which don't,
- # and this doesn't activate hordes of code, so do it always.
- config ISA
- bool
- default y
- help
- Find out whether you have ISA slots on your motherboard. ISA is the
- name of a bus system, i.e. the way the CPU talks to the other stuff
- inside your box. Other bus systems are PCI, EISA, MicroChannel
- (MCA) or VESA. ISA is an older system, now being displaced by PCI;
- newer boards don't support it. If you have ISA, say Y, otherwise N.
- config ISA_DMA_API
- bool
- default y
- config PCI
- bool
- depends on !ALPHA_JENSEN
- select GENERIC_PCI_IOMAP
- default y
- help
- Find out whether you have a PCI motherboard. PCI is the name of a
- bus system, i.e. the way the CPU talks to the other stuff inside
- your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
- VESA. If you have PCI, say Y, otherwise N.
- config PCI_DOMAINS
- bool
- default y
- config PCI_SYSCALL
- def_bool PCI
- config IOMMU_HELPER
- def_bool PCI
- config ALPHA_NONAME
- bool
- depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
- default y
- help
- The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
- UDB). This design was produced by Digital's Technical OEM (TOEM)
- group. It uses the 21066 processor running at 166MHz or 233MHz. It
- is a baby-AT size, and runs from a standard PC power supply. It has
- 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
- 2 versions, with either PS/2 or large DIN connectors for the
- keyboard.
- config ALPHA_EV4
- bool
- depends on ALPHA_JENSEN || (ALPHA_SABLE && !ALPHA_GAMMA) || ALPHA_LYNX || ALPHA_NORITAKE && !ALPHA_PRIMO || ALPHA_MIKASA && !ALPHA_PRIMO || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL || ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
- default y if !ALPHA_LYNX
- config ALPHA_LCA
- bool
- depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
- default y
- config ALPHA_APECS
- bool
- depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
- default y
- config ALPHA_EB64P
- bool
- depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
- default y
- help
- Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
- 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
- ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
- (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
- SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
- Runs from standard PC power supply.
- config ALPHA_EV5
- bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
- default y if ALPHA_RX164 || ALPHA_RAWHIDE || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_SABLE && ALPHA_GAMMA || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
- config ALPHA_EV4
- bool
- default y if ALPHA_LYNX && !ALPHA_EV5
- config ALPHA_CIA
- bool
- depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
- default y
- config ALPHA_EV56
- bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
- default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
- config ALPHA_EV56
- prompt "EV56 CPU (speed >= 333MHz)?"
- depends on ALPHA_NORITAKE || ALPHA_PRIMO
- config ALPHA_EV56
- prompt "EV56 CPU (speed >= 400MHz)?"
- depends on ALPHA_RAWHIDE
- config ALPHA_PRIMO
- bool "EV5 CPU daughtercard (model 5/xxx)?"
- depends on ALPHA_NORITAKE || ALPHA_MIKASA
- help
- Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
- config ALPHA_GAMMA
- bool "EV5 CPU(s) (model 5/xxx)?"
- depends on ALPHA_SABLE
- help
- Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
- config ALPHA_GAMMA
- bool
- depends on ALPHA_LYNX
- default y
- config ALPHA_T2
- bool
- depends on ALPHA_SABLE || ALPHA_LYNX
- default y
- config ALPHA_PYXIS
- bool
- depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
- default y
- config ALPHA_EV6
- bool
- depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
- default y
- config ALPHA_TSUNAMI
- bool
- depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
- default y
- config ALPHA_EV67
- bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
- default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
- help
- Is this a machine based on the EV67 core? If in doubt, select N here
- and the machine will be treated as an EV6.
- config ALPHA_MCPCIA
- bool
- depends on ALPHA_RAWHIDE
- default y
- config ALPHA_POLARIS
- bool
- depends on ALPHA_RX164
- default y
- config ALPHA_IRONGATE
- bool
- depends on ALPHA_NAUTILUS
- default y
- config GENERIC_HWEIGHT
- bool
- default y if !ALPHA_EV67
- config ALPHA_AVANTI
- bool
- depends on ALPHA_XL || ALPHA_AVANTI_CH
- default y
- help
- Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
- Alphas. Info at
- <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
- config ALPHA_BROKEN_IRQ_MASK
- bool
- depends on ALPHA_GENERIC || ALPHA_PC164
- default y
- config VGA_HOSE
- bool
- depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
- default y
- help
- Support VGA on an arbitrary hose; needed for several platforms
- which always have multiple hoses, and whose consoles support it.
- config ALPHA_QEMU
- bool "Run under QEMU emulation"
- depends on !ALPHA_GENERIC
- ---help---
- Assume the presence of special features supported by QEMU PALcode
- that reduce the overhead of system emulation.
- Generic kernels will auto-detect QEMU. But when building a
- system-specific kernel, the assumption is that we want to
- elimiate as many runtime tests as possible.
- If unsure, say N.
- config ALPHA_SRM
- bool "Use SRM as bootloader" if ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS || ALPHA_NONAME
- depends on TTY
- default y if ALPHA_JENSEN || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
- ---help---
- There are two different types of booting firmware on Alphas: SRM,
- which is command line driven, and ARC, which uses menus and arrow
- keys. Details about the Linux/Alpha booting process are contained in
- the Linux/Alpha FAQ, accessible on the WWW from
- <http://www.alphalinux.org/>.
- The usual way to load Linux on an Alpha machine is to use MILO
- (a bootloader that lets you pass command line parameters to the
- kernel just like lilo does for the x86 architecture) which can be
- loaded either from ARC or can be installed directly as a permanent
- firmware replacement from floppy (which requires changing a certain
- jumper on the motherboard). If you want to do either of these, say N
- here. If MILO doesn't work on your system (true for Jensen
- motherboards), you can bypass it altogether and boot Linux directly
- from an SRM console; say Y here in order to do that. Note that you
- won't be able to boot from an IDE disk using SRM.
- If unsure, say N.
- config EISA
- bool
- depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
- default y
- config ARCH_MAY_HAVE_PC_FDC
- def_bool y
- config SMP
- bool "Symmetric multi-processing support"
- depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
- ---help---
- This enables support for systems with more than one CPU. If you have
- a system with only one CPU, say N. If you have a system with more
- than one CPU, say Y.
- If you say N here, the kernel will run on uni- 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,
- uniprocessor machines. On a uniprocessor 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>.
- If you don't know what to do here, say N.
- config HAVE_DEC_LOCK
- bool
- depends on SMP
- default y
- config NR_CPUS
- int "Maximum number of CPUs (2-32)"
- range 2 32
- depends on SMP
- default "32" if ALPHA_GENERIC || ALPHA_MARVEL
- default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
- help
- MARVEL support can handle a maximum of 32 CPUs, all the others
- with working support have a maximum of 4 CPUs.
- config ARCH_DISCONTIGMEM_ENABLE
- bool "Discontiguous Memory Support"
- help
- Say Y to support efficient handling of discontiguous physical memory,
- for architectures which are either NUMA (Non-Uniform Memory Access)
- or have huge holes in the physical address space for other reasons.
- See <file:Documentation/vm/numa> for more.
- source "mm/Kconfig"
- config NUMA
- bool "NUMA Support (EXPERIMENTAL)"
- depends on DISCONTIGMEM && BROKEN
- help
- Say Y to compile the kernel to support NUMA (Non-Uniform Memory
- Access). This option is for configuring high-end multiprocessor
- server machines. If in doubt, say N.
- config ALPHA_WTINT
- bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
- default y if ALPHA_QEMU
- default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
- default n if !ALPHA_SRM && !ALPHA_GENERIC
- default y if SMP
- ---help---
- The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
- to sleep until the next interrupt. This may reduce the power
- consumed, and the heat produced by the computer. However, it has
- the side effect of making the cycle counter unreliable as a timing
- device across the sleep.
- For emulation under QEMU, definitely say Y here, as we have other
- mechanisms for measuring time than the cycle counter.
- For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
- MILO, sleep mode is not supported so you might as well say N here.
- For SMP systems we cannot use the cycle counter for timing anyway,
- so you might as well say Y here.
- If unsure, say N.
- config NODES_SHIFT
- int
- default "7"
- depends on NEED_MULTIPLE_NODES
- # LARGE_VMALLOC is racy, if you *really* need it then fix it first
- config ALPHA_LARGE_VMALLOC
- bool
- ---help---
- Process creation and other aspects of virtual memory management can
- be streamlined if we restrict the kernel to one PGD for all vmalloc
- allocations. This equates to about 8GB.
- Under normal circumstances, this is so far and above what is needed
- as to be laughable. However, there are certain applications (such
- as benchmark-grade in-kernel web serving) that can make use of as
- much vmalloc space as is available.
- Say N unless you know you need gobs and gobs of vmalloc space.
- config VERBOSE_MCHECK
- bool "Verbose Machine Checks"
- config VERBOSE_MCHECK_ON
- int "Verbose Printing Mode (0=off, 1=on, 2=all)"
- depends on VERBOSE_MCHECK
- default 1
- ---help---
- This option allows the default printing mode to be set, and then
- possibly overridden by a boot command argument.
- For example, if one wanted the option of printing verbose
- machine checks, but wanted the default to be as if verbose
- machine check printing was turned off, then one would choose
- the printing mode to be 0. Then, upon reboot, one could add
- the boot command line "verbose_mcheck=1" to get the normal
- verbose machine check printing, or "verbose_mcheck=2" to get
- the maximum information available.
- Take the default (1) unless you want more control or more info.
- choice
- prompt "Timer interrupt frequency (HZ)?"
- default HZ_128 if ALPHA_QEMU
- default HZ_1200 if ALPHA_RAWHIDE
- default HZ_1024
- ---help---
- The frequency at which timer interrupts occur. A high frequency
- minimizes latency, whereas a low frequency minimizes overhead of
- process accounting. The later effect is especially significant
- when being run under QEMU.
- Note that some Alpha hardware cannot change the interrupt frequency
- of the timer. If unsure, say 1024 (or 1200 for Rawhide).
- config HZ_32
- bool "32 Hz"
- config HZ_64
- bool "64 Hz"
- config HZ_128
- bool "128 Hz"
- config HZ_256
- bool "256 Hz"
- config HZ_1024
- bool "1024 Hz"
- config HZ_1200
- bool "1200 Hz"
- endchoice
- config HZ
- int
- default 32 if HZ_32
- default 64 if HZ_64
- default 128 if HZ_128
- default 256 if HZ_256
- default 1200 if HZ_1200
- default 1024
- source "drivers/pci/Kconfig"
- source "drivers/eisa/Kconfig"
- source "drivers/pcmcia/Kconfig"
- config SRM_ENV
- tristate "SRM environment through procfs"
- depends on PROC_FS
- ---help---
- If you enable this option, a subdirectory inside /proc called
- /proc/srm_environment will give you access to the all important
- SRM environment variables (those which have a name) and also
- to all others (by their internal number).
- SRM is something like a BIOS for Alpha machines. There are some
- other such BIOSes, like AlphaBIOS, which this driver cannot
- support (hey, that's not SRM!).
- Despite the fact that this driver doesn't work on all Alphas (but
- only on those which have SRM as their firmware), it's save to
- build it even if your particular machine doesn't know about SRM
- (or if you intend to compile a generic kernel). It will simply
- not create those subdirectory in /proc (and give you some warning,
- of course).
- This driver is also available as a module and will be called
- srm_env then.
- source "fs/Kconfig.binfmt"
- endmenu
- source "net/Kconfig"
- source "drivers/Kconfig"
- source "fs/Kconfig"
- source "arch/alpha/Kconfig.debug"
- # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
- # but we also need it if VGA_HOSE is set
- config DUMMY_CONSOLE
- bool
- depends on VGA_HOSE
- default y
- source "security/Kconfig"
- source "crypto/Kconfig"
- source "lib/Kconfig"
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