Commit 8f9ca475 authored by Ingo Molnar's avatar Ingo Molnar

x86: clean up arch/x86/Kconfig*

- Consistent alignment of help text
- Use the ---help--- keyword everywhere consistently as a visual separator
- fix whitespace mismatches
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 4f179d12
This diff is collapsed.
......@@ -50,7 +50,7 @@ config M386
config M486
bool "486"
depends on X86_32
help
---help---
Select this for a 486 series processor, either Intel or one of the
compatible processors from AMD, Cyrix, IBM, or Intel. Includes DX,
DX2, and DX4 variants; also SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or
......@@ -59,7 +59,7 @@ config M486
config M586
bool "586/K5/5x86/6x86/6x86MX"
depends on X86_32
help
---help---
Select this for an 586 or 686 series processor such as the AMD K5,
the Cyrix 5x86, 6x86 and 6x86MX. This choice does not
assume the RDTSC (Read Time Stamp Counter) instruction.
......@@ -67,21 +67,21 @@ config M586
config M586TSC
bool "Pentium-Classic"
depends on X86_32
help
---help---
Select this for a Pentium Classic processor with the RDTSC (Read
Time Stamp Counter) instruction for benchmarking.
config M586MMX
bool "Pentium-MMX"
depends on X86_32
help
---help---
Select this for a Pentium with the MMX graphics/multimedia
extended instructions.
config M686
bool "Pentium-Pro"
depends on X86_32
help
---help---
Select this for Intel Pentium Pro chips. This enables the use of
Pentium Pro extended instructions, and disables the init-time guard
against the f00f bug found in earlier Pentiums.
......@@ -89,7 +89,7 @@ config M686
config MPENTIUMII
bool "Pentium-II/Celeron(pre-Coppermine)"
depends on X86_32
help
---help---
Select this for Intel chips based on the Pentium-II and
pre-Coppermine Celeron core. This option enables an unaligned
copy optimization, compiles the kernel with optimization flags
......@@ -99,7 +99,7 @@ config MPENTIUMII
config MPENTIUMIII
bool "Pentium-III/Celeron(Coppermine)/Pentium-III Xeon"
depends on X86_32
help
---help---
Select this for Intel chips based on the Pentium-III and
Celeron-Coppermine core. This option enables use of some
extended prefetch instructions in addition to the Pentium II
......@@ -108,14 +108,14 @@ config MPENTIUMIII
config MPENTIUMM
bool "Pentium M"
depends on X86_32
help
---help---
Select this for Intel Pentium M (not Pentium-4 M)
notebook chips.
config MPENTIUM4
bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/older Xeon"
depends on X86_32
help
---help---
Select this for Intel Pentium 4 chips. This includes the
Pentium 4, Pentium D, P4-based Celeron and Xeon, and
Pentium-4 M (not Pentium M) chips. This option enables compile
......@@ -151,7 +151,7 @@ config MPENTIUM4
config MK6
bool "K6/K6-II/K6-III"
depends on X86_32
help
---help---
Select this for an AMD K6-family processor. Enables use of
some extended instructions, and passes appropriate optimization
flags to GCC.
......@@ -159,14 +159,14 @@ config MK6
config MK7
bool "Athlon/Duron/K7"
depends on X86_32
help
---help---
Select this for an AMD Athlon K7-family processor. Enables use of
some extended instructions, and passes appropriate optimization
flags to GCC.
config MK8
bool "Opteron/Athlon64/Hammer/K8"
help
---help---
Select this for an AMD Opteron or Athlon64 Hammer-family processor.
Enables use of some extended instructions, and passes appropriate
optimization flags to GCC.
......@@ -174,7 +174,7 @@ config MK8
config MCRUSOE
bool "Crusoe"
depends on X86_32
help
---help---
Select this for a Transmeta Crusoe processor. Treats the processor
like a 586 with TSC, and sets some GCC optimization flags (like a
Pentium Pro with no alignment requirements).
......@@ -182,13 +182,13 @@ config MCRUSOE
config MEFFICEON
bool "Efficeon"
depends on X86_32
help
---help---
Select this for a Transmeta Efficeon processor.
config MWINCHIPC6
bool "Winchip-C6"
depends on X86_32
help
---help---
Select this for an IDT Winchip C6 chip. Linux and GCC
treat this chip as a 586TSC with some extended instructions
and alignment requirements.
......@@ -196,7 +196,7 @@ config MWINCHIPC6
config MWINCHIP3D
bool "Winchip-2/Winchip-2A/Winchip-3"
depends on X86_32
help
---help---
Select this for an IDT Winchip-2, 2A or 3. Linux and GCC
treat this chip as a 586TSC with some extended instructions
and alignment requirements. Also enable out of order memory
......@@ -206,19 +206,19 @@ config MWINCHIP3D
config MGEODEGX1
bool "GeodeGX1"
depends on X86_32
help
---help---
Select this for a Geode GX1 (Cyrix MediaGX) chip.
config MGEODE_LX
bool "Geode GX/LX"
depends on X86_32
help
---help---
Select this for AMD Geode GX and LX processors.
config MCYRIXIII
bool "CyrixIII/VIA-C3"
depends on X86_32
help
---help---
Select this for a Cyrix III or C3 chip. Presently Linux and GCC
treat this chip as a generic 586. Whilst the CPU is 686 class,
it lacks the cmov extension which gcc assumes is present when
......@@ -230,7 +230,7 @@ config MCYRIXIII
config MVIAC3_2
bool "VIA C3-2 (Nehemiah)"
depends on X86_32
help
---help---
Select this for a VIA C3 "Nehemiah". Selecting this enables usage
of SSE and tells gcc to treat the CPU as a 686.
Note, this kernel will not boot on older (pre model 9) C3s.
......@@ -238,14 +238,14 @@ config MVIAC3_2
config MVIAC7
bool "VIA C7"
depends on X86_32
help
---help---
Select this for a VIA C7. Selecting this uses the correct cache
shift and tells gcc to treat the CPU as a 686.
config MPSC
bool "Intel P4 / older Netburst based Xeon"
depends on X86_64
help
---help---
Optimize for Intel Pentium 4, Pentium D and older Nocona/Dempsey
Xeon CPUs with Intel 64bit which is compatible with x86-64.
Note that the latest Xeons (Xeon 51xx and 53xx) are not based on the
......@@ -255,7 +255,7 @@ config MPSC
config MCORE2
bool "Core 2/newer Xeon"
help
---help---
Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and
53xx) CPUs. You can distinguish newer from older Xeons by the CPU
......@@ -265,7 +265,7 @@ config MCORE2
config GENERIC_CPU
bool "Generic-x86-64"
depends on X86_64
help
---help---
Generic x86-64 CPU.
Run equally well on all x86-64 CPUs.
......@@ -274,7 +274,7 @@ endchoice
config X86_GENERIC
bool "Generic x86 support"
depends on X86_32
help
---help---
Instead of just including optimizations for the selected
x86 variant (e.g. PII, Crusoe or Athlon), include some more
generic optimizations as well. This will make the kernel
......@@ -319,7 +319,7 @@ config X86_XADD
config X86_PPRO_FENCE
bool "PentiumPro memory ordering errata workaround"
depends on M686 || M586MMX || M586TSC || M586 || M486 || M386 || MGEODEGX1
help
---help---
Old PentiumPro multiprocessor systems had errata that could cause
memory operations to violate the x86 ordering standard in rare cases.
Enabling this option will attempt to work around some (but not all)
......@@ -412,14 +412,14 @@ config X86_DEBUGCTLMSR
menuconfig PROCESSOR_SELECT
bool "Supported processor vendors" if EMBEDDED
help
---help---
This lets you choose what x86 vendor support code your kernel
will include.
config CPU_SUP_INTEL
default y
bool "Support Intel processors" if PROCESSOR_SELECT
help
---help---
This enables detection, tunings and quirks for Intel processors
You need this enabled if you want your kernel to run on an
......@@ -433,7 +433,7 @@ config CPU_SUP_CYRIX_32
default y
bool "Support Cyrix processors" if PROCESSOR_SELECT
depends on !64BIT
help
---help---
This enables detection, tunings and quirks for Cyrix processors
You need this enabled if you want your kernel to run on a
......@@ -446,7 +446,7 @@ config CPU_SUP_CYRIX_32
config CPU_SUP_AMD
default y
bool "Support AMD processors" if PROCESSOR_SELECT
help
---help---
This enables detection, tunings and quirks for AMD processors
You need this enabled if you want your kernel to run on an
......@@ -460,7 +460,7 @@ config CPU_SUP_CENTAUR_32
default y
bool "Support Centaur processors" if PROCESSOR_SELECT
depends on !64BIT
help
---help---
This enables detection, tunings and quirks for Centaur processors
You need this enabled if you want your kernel to run on a
......@@ -474,7 +474,7 @@ config CPU_SUP_CENTAUR_64
default y
bool "Support Centaur processors" if PROCESSOR_SELECT
depends on 64BIT
help
---help---
This enables detection, tunings and quirks for Centaur processors
You need this enabled if you want your kernel to run on a
......@@ -488,7 +488,7 @@ config CPU_SUP_TRANSMETA_32
default y
bool "Support Transmeta processors" if PROCESSOR_SELECT
depends on !64BIT
help
---help---
This enables detection, tunings and quirks for Transmeta processors
You need this enabled if you want your kernel to run on a
......@@ -502,7 +502,7 @@ config CPU_SUP_UMC_32
default y
bool "Support UMC processors" if PROCESSOR_SELECT
depends on !64BIT
help
---help---
This enables detection, tunings and quirks for UMC processors
You need this enabled if you want your kernel to run on a
......@@ -521,7 +521,7 @@ config X86_PTRACE_BTS
bool "Branch Trace Store"
default y
depends on X86_DEBUGCTLMSR
help
---help---
This adds a ptrace interface to the hardware's branch trace store.
Debuggers may use it to collect an execution trace of the debugged
......
......@@ -7,7 +7,7 @@ source "lib/Kconfig.debug"
config STRICT_DEVMEM
bool "Filter access to /dev/mem"
help
---help---
If this option is disabled, you allow userspace (root) access to all
of memory, including kernel and userspace memory. Accidental
access to this is obviously disastrous, but specific access can
......@@ -25,7 +25,7 @@ config STRICT_DEVMEM
config X86_VERBOSE_BOOTUP
bool "Enable verbose x86 bootup info messages"
default y
help
---help---
Enables the informational output from the decompression stage
(e.g. bzImage) of the boot. If you disable this you will still
see errors. Disable this if you want silent bootup.
......@@ -33,7 +33,7 @@ config X86_VERBOSE_BOOTUP
config EARLY_PRINTK
bool "Early printk" if EMBEDDED
default y
help
---help---
Write kernel log output directly into the VGA buffer or to a serial
port.
......@@ -47,7 +47,7 @@ config EARLY_PRINTK_DBGP
bool "Early printk via EHCI debug port"
default n
depends on EARLY_PRINTK && PCI
help
---help---
Write kernel log output directly into the EHCI debug port.
This is useful for kernel debugging when your machine crashes very
......@@ -59,14 +59,14 @@ config EARLY_PRINTK_DBGP
config DEBUG_STACKOVERFLOW
bool "Check for stack overflows"
depends on DEBUG_KERNEL
help
---help---
This option will cause messages to be printed if free stack space
drops below a certain limit.
config DEBUG_STACK_USAGE
bool "Stack utilization instrumentation"
depends on DEBUG_KERNEL
help
---help---
Enables the display of the minimum amount of free stack which each
task has ever had available in the sysrq-T and sysrq-P debug output.
......@@ -75,7 +75,7 @@ config DEBUG_STACK_USAGE
config DEBUG_PAGEALLOC
bool "Debug page memory allocations"
depends on DEBUG_KERNEL
help
---help---
Unmap pages from the kernel linear mapping after free_pages().
This results in a large slowdown, but helps to find certain types
of memory corruptions.
......@@ -85,7 +85,7 @@ config DEBUG_PER_CPU_MAPS
depends on DEBUG_KERNEL
depends on SMP
default n
help
---help---
Say Y to verify that the per_cpu map being accessed has
been setup. Adds a fair amount of code to kernel memory
and decreases performance.
......@@ -96,7 +96,7 @@ config X86_PTDUMP
bool "Export kernel pagetable layout to userspace via debugfs"
depends on DEBUG_KERNEL
select DEBUG_FS
help
---help---
Say Y here if you want to show the kernel pagetable layout in a
debugfs file. This information is only useful for kernel developers
who are working in architecture specific areas of the kernel.
......@@ -108,7 +108,7 @@ config DEBUG_RODATA
bool "Write protect kernel read-only data structures"
default y
depends on DEBUG_KERNEL
help
---help---
Mark the kernel read-only data as write-protected in the pagetables,
in order to catch accidental (and incorrect) writes to such const
data. This is recommended so that we can catch kernel bugs sooner.
......@@ -118,7 +118,7 @@ config DEBUG_RODATA_TEST
bool "Testcase for the DEBUG_RODATA feature"
depends on DEBUG_RODATA
default y
help
---help---
This option enables a testcase for the DEBUG_RODATA
feature as well as for the change_page_attr() infrastructure.
If in doubt, say "N"
......@@ -126,7 +126,7 @@ config DEBUG_RODATA_TEST
config DEBUG_NX_TEST
tristate "Testcase for the NX non-executable stack feature"
depends on DEBUG_KERNEL && m
help
---help---
This option enables a testcase for the CPU NX capability
and the software setup of this feature.
If in doubt, say "N"
......@@ -134,7 +134,7 @@ config DEBUG_NX_TEST
config 4KSTACKS
bool "Use 4Kb for kernel stacks instead of 8Kb"
depends on X86_32
help
---help---
If you say Y here the kernel will use a 4Kb stacksize for the
kernel stack attached to each process/thread. This facilitates
running more threads on a system and also reduces the pressure
......@@ -145,7 +145,7 @@ config DOUBLEFAULT
default y
bool "Enable doublefault exception handler" if EMBEDDED
depends on X86_32
help
---help---
This option allows trapping of rare doublefault exceptions that
would otherwise cause a system to silently reboot. Disabling this
option saves about 4k and might cause you much additional grey
......@@ -155,7 +155,7 @@ config IOMMU_DEBUG
bool "Enable IOMMU debugging"
depends on GART_IOMMU && DEBUG_KERNEL
depends on X86_64
help
---help---
Force the IOMMU to on even when you have less than 4GB of
memory and add debugging code. On overflow always panic. And
allow to enable IOMMU leak tracing. Can be disabled at boot
......@@ -171,7 +171,7 @@ config IOMMU_LEAK
bool "IOMMU leak tracing"
depends on DEBUG_KERNEL
depends on IOMMU_DEBUG
help
---help---
Add a simple leak tracer to the IOMMU code. This is useful when you
are debugging a buggy device driver that leaks IOMMU mappings.
......@@ -224,25 +224,25 @@ choice
config IO_DELAY_0X80
bool "port 0x80 based port-IO delay [recommended]"
help
---help---
This is the traditional Linux IO delay used for in/out_p.
It is the most tested hence safest selection here.
config IO_DELAY_0XED
bool "port 0xed based port-IO delay"
help
---help---
Use port 0xed as the IO delay. This frees up port 0x80 which is
often used as a hardware-debug port.
config IO_DELAY_UDELAY
bool "udelay based port-IO delay"
help
---help---
Use udelay(2) as the IO delay method. This provides the delay
while not having any side-effect on the IO port space.
config IO_DELAY_NONE
bool "no port-IO delay"
help
---help---
No port-IO delay. Will break on old boxes that require port-IO
delay for certain operations. Should work on most new machines.
......@@ -276,18 +276,18 @@ config DEBUG_BOOT_PARAMS
bool "Debug boot parameters"
depends on DEBUG_KERNEL
depends on DEBUG_FS
help
---help---
This option will cause struct boot_params to be exported via debugfs.
config CPA_DEBUG
bool "CPA self-test code"
depends on DEBUG_KERNEL
help
---help---
Do change_page_attr() self-tests every 30 seconds.
config OPTIMIZE_INLINING
bool "Allow gcc to uninline functions marked 'inline'"
help
---help---
This option determines if the kernel forces gcc to inline the functions
developers have marked 'inline'. Doing so takes away freedom from gcc to
do what it thinks is best, which is desirable for the gcc 3.x series of
......@@ -300,4 +300,3 @@ config OPTIMIZE_INLINING
If unsure, say N.
endmenu
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