54703d3678
This patch increases the maximum number of cpus supported on IA64 to 1024. No changes are made to the default SSI size. The patch simply allows specifying up to 1024p. There are certainly scaling (& other) issues that also need to be addressed!!! Additional patches will follow..... Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
414 lines
10 KiB
Plaintext
414 lines
10 KiB
Plaintext
#
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# For a description of the syntax of this configuration file,
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# see Documentation/kbuild/kconfig-language.txt.
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#
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mainmenu "IA-64 Linux Kernel Configuration"
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source "init/Kconfig"
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menu "Processor type and features"
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config IA64
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bool
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default y
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help
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The Itanium Processor Family is Intel's 64-bit successor to
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the 32-bit X86 line. The IA-64 Linux project has a home
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page at <http://www.linuxia64.org/> and a mailing list at
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<linux-ia64@vger.kernel.org>.
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config 64BIT
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bool
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default y
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config MMU
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bool
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default y
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config RWSEM_XCHGADD_ALGORITHM
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bool
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default y
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config GENERIC_CALIBRATE_DELAY
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bool
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default y
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config TIME_INTERPOLATION
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bool
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default y
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config EFI
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bool
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default y
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config GENERIC_IOMAP
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bool
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default y
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config SCHED_NO_NO_OMIT_FRAME_POINTER
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bool
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default y
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config IA64_UNCACHED_ALLOCATOR
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bool
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select GENERIC_ALLOCATOR
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choice
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prompt "System type"
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default IA64_GENERIC
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config IA64_GENERIC
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bool "generic"
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select ACPI
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select NUMA
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select ACPI_NUMA
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select VIRTUAL_MEM_MAP
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select DISCONTIGMEM
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help
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This selects the system type of your hardware. A "generic" kernel
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will run on any supported IA-64 system. However, if you configure
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a kernel for your specific system, it will be faster and smaller.
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generic For any supported IA-64 system
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DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
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HP-zx1/sx1000 For HP systems
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HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
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SGI-SN2 For SGI Altix systems
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Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
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If you don't know what to do, choose "generic".
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config IA64_DIG
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bool "DIG-compliant"
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config IA64_HP_ZX1
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bool "HP-zx1/sx1000"
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help
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Build a kernel that runs on HP zx1 and sx1000 systems. This adds
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support for the HP I/O MMU.
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config IA64_HP_ZX1_SWIOTLB
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bool "HP-zx1/sx1000 with software I/O TLB"
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help
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Build a kernel that runs on HP zx1 and sx1000 systems even when they
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have broken PCI devices which cannot DMA to full 32 bits. Apart
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from support for the HP I/O MMU, this includes support for the software
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I/O TLB, which allows supporting the broken devices at the expense of
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wasting some kernel memory (about 2MB by default).
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config IA64_SGI_SN2
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bool "SGI-SN2"
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help
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Selecting this option will optimize the kernel for use on sn2 based
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systems, but the resulting kernel binary will not run on other
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types of ia64 systems. If you have an SGI Altix system, it's safe
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to select this option. If in doubt, select ia64 generic support
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instead.
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config IA64_HP_SIM
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bool "Ski-simulator"
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endchoice
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choice
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prompt "Processor type"
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default ITANIUM
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config ITANIUM
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bool "Itanium"
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help
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Select your IA-64 processor type. The default is Itanium.
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This choice is safe for all IA-64 systems, but may not perform
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optimally on systems with, say, Itanium 2 or newer processors.
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config MCKINLEY
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bool "Itanium 2"
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help
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Select this to configure for an Itanium 2 (McKinley) processor.
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endchoice
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choice
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prompt "Kernel page size"
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default IA64_PAGE_SIZE_16KB
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config IA64_PAGE_SIZE_4KB
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bool "4KB"
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help
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This lets you select the page size of the kernel. For best IA-64
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performance, a page size of 8KB or 16KB is recommended. For best
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IA-32 compatibility, a page size of 4KB should be selected (the vast
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majority of IA-32 binaries work perfectly fine with a larger page
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size). For Itanium 2 or newer systems, a page size of 64KB can also
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be selected.
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4KB For best IA-32 compatibility
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8KB For best IA-64 performance
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16KB For best IA-64 performance
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64KB Requires Itanium 2 or newer processor.
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If you don't know what to do, choose 16KB.
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config IA64_PAGE_SIZE_8KB
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bool "8KB"
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config IA64_PAGE_SIZE_16KB
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bool "16KB"
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config IA64_PAGE_SIZE_64KB
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depends on !ITANIUM
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bool "64KB"
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endchoice
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source kernel/Kconfig.hz
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config IA64_BRL_EMU
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bool
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depends on ITANIUM
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default y
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# align cache-sensitive data to 128 bytes
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config IA64_L1_CACHE_SHIFT
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int
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default "7" if MCKINLEY
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default "6" if ITANIUM
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# align cache-sensitive data to 64 bytes
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config NUMA
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bool "NUMA support"
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depends on !IA64_HP_SIM
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default y if IA64_SGI_SN2
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select ACPI_NUMA
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help
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Say Y to compile the kernel to support NUMA (Non-Uniform Memory
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Access). This option is for configuring high-end multiprocessor
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server systems. If in doubt, say N.
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config VIRTUAL_MEM_MAP
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bool "Virtual mem map"
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default y if !IA64_HP_SIM
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help
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Say Y to compile the kernel with support for a virtual mem map.
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This code also only takes effect if a memory hole of greater than
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1 Gb is found during boot. You must turn this option on if you
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require the DISCONTIGMEM option for your machine. If you are
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unsure, say Y.
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config HOLES_IN_ZONE
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bool
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default y if VIRTUAL_MEM_MAP
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config ARCH_DISCONTIGMEM_ENABLE
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bool "Discontiguous memory support"
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depends on (IA64_DIG || IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB) && NUMA && VIRTUAL_MEM_MAP
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default y if (IA64_SGI_SN2 || IA64_GENERIC) && NUMA
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help
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Say Y to support efficient handling of discontiguous physical memory,
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for architectures which are either NUMA (Non-Uniform Memory Access)
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or have huge holes in the physical address space for other reasons.
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See <file:Documentation/vm/numa> for more.
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config IA64_CYCLONE
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bool "Cyclone (EXA) Time Source support"
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help
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Say Y here to enable support for IBM EXA Cyclone time source.
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If you're unsure, answer N.
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config IOSAPIC
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bool
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depends on !IA64_HP_SIM
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default y
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config IA64_SGI_SN_XP
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tristate "Support communication between SGI SSIs"
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select IA64_UNCACHED_ALLOCATOR
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help
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An SGI machine can be divided into multiple Single System
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Images which act independently of each other and have
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hardware based memory protection from the others. Enabling
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this feature will allow for direct communication between SSIs
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based on a network adapter and DMA messaging.
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config FORCE_MAX_ZONEORDER
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int
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default "18"
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config SMP
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bool "Symmetric multi-processing support"
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help
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This enables support for systems with more than one CPU. If you have
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a system with only one CPU, say N. If you have a system with more
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than one CPU, say Y.
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If you say N here, the kernel will run on single and multiprocessor
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systems, but will use only one CPU of a multiprocessor system. If
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you say Y here, the kernel will run on many, but not all,
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single processor systems. On a single processor system, the kernel
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will run faster if you say N here.
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See also the <file:Documentation/smp.txt> and the SMP-HOWTO
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available at <http://www.tldp.org/docs.html#howto>.
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If you don't know what to do here, say N.
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config NR_CPUS
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int "Maximum number of CPUs (2-1024)"
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range 2 1024
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depends on SMP
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default "64"
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help
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You should set this to the number of CPUs in your system, but
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keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
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only use 2 CPUs on a >2 CPU system. Setting this to a value larger
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than 64 will cause the use of a CPU mask array, causing a small
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performance hit.
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config HOTPLUG_CPU
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bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
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depends on SMP && EXPERIMENTAL
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select HOTPLUG
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default n
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---help---
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Say Y here to experiment with turning CPUs off and on. CPUs
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can be controlled through /sys/devices/system/cpu/cpu#.
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Say N if you want to disable CPU hotplug.
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config SCHED_SMT
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bool "SMT scheduler support"
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depends on SMP
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default off
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help
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Improves the CPU scheduler's decision making when dealing with
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Intel IA64 chips with MultiThreading at a cost of slightly increased
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overhead in some places. If unsure say N here.
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config PREEMPT
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bool "Preemptible Kernel"
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help
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This option reduces the latency of the kernel when reacting to
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real-time or interactive events by allowing a low priority process to
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be preempted even if it is in kernel mode executing a system call.
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This allows applications to run more reliably even when the system is
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under load.
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Say Y here if you are building a kernel for a desktop, embedded
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or real-time system. Say N if you are unsure.
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source "mm/Kconfig"
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config IA32_SUPPORT
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bool "Support for Linux/x86 binaries"
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help
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IA-64 processors can execute IA-32 (X86) instructions. By
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saying Y here, the kernel will include IA-32 system call
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emulation support which makes it possible to transparently
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run IA-32 Linux binaries on an IA-64 Linux system.
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If in doubt, say Y.
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config COMPAT
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bool
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depends on IA32_SUPPORT
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default y
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config IA64_MCA_RECOVERY
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tristate "MCA recovery from errors other than TLB."
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config PERFMON
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bool "Performance monitor support"
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help
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Selects whether support for the IA-64 performance monitor hardware
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is included in the kernel. This makes some kernel data-structures a
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little bigger and slows down execution a bit, but it is generally
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a good idea to turn this on. If you're unsure, say Y.
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config IA64_PALINFO
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tristate "/proc/pal support"
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help
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If you say Y here, you are able to get PAL (Processor Abstraction
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Layer) information in /proc/pal. This contains useful information
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about the processors in your systems, such as cache and TLB sizes
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and the PAL firmware version in use.
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To use this option, you have to ensure that the "/proc file system
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support" (CONFIG_PROC_FS) is enabled, too.
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source "drivers/firmware/Kconfig"
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source "fs/Kconfig.binfmt"
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endmenu
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menu "Power management and ACPI"
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source "kernel/power/Kconfig"
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source "drivers/acpi/Kconfig"
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if PM
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source "arch/ia64/kernel/cpufreq/Kconfig"
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endif
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endmenu
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if !IA64_HP_SIM
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menu "Bus options (PCI, PCMCIA)"
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config PCI
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bool "PCI support"
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help
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Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
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here unless you are using a simulator without PCI support.
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config PCI_DOMAINS
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bool
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default PCI
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source "drivers/pci/Kconfig"
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source "drivers/pci/hotplug/Kconfig"
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source "drivers/pcmcia/Kconfig"
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endmenu
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endif
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source "net/Kconfig"
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source "drivers/Kconfig"
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source "fs/Kconfig"
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source "lib/Kconfig"
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#
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# Use the generic interrupt handling code in kernel/irq/:
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#
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config GENERIC_HARDIRQS
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bool
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default y
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config GENERIC_IRQ_PROBE
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bool
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default y
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config GENERIC_PENDING_IRQ
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bool
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depends on GENERIC_HARDIRQS && SMP
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default y
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source "arch/ia64/hp/sim/Kconfig"
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source "arch/ia64/oprofile/Kconfig"
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source "arch/ia64/Kconfig.debug"
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source "security/Kconfig"
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source "crypto/Kconfig"
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