config X86
def_bool y
select HAVE_AOUT if X86_32
+ select HAVE_READQ
+ select HAVE_WRITEQ
select HAVE_UNSTABLE_SCHED_CLOCK
select HAVE_IDE
select HAVE_OPROFILE
select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_DYNAMIC_FTRACE
select HAVE_FUNCTION_TRACER
+ select HAVE_FUNCTION_GRAPH_TRACER
+ select HAVE_FUNCTION_TRACE_MCOUNT_TEST
select HAVE_KVM if ((X86_32 && !X86_VOYAGER && !X86_VISWS && !X86_NUMAQ) || X86_64)
select HAVE_ARCH_KGDB if !X86_VOYAGER
select HAVE_ARCH_TRACEHOOK
select HAVE_GENERIC_DMA_COHERENT if X86_32
select HAVE_EFFICIENT_UNALIGNED_ACCESS
+ select USER_STACKTRACE_SUPPORT
config ARCH_DEFCONFIG
string
config GENERIC_BUG
def_bool y
depends on BUG
+ select GENERIC_BUG_RELATIVE_POINTERS if X86_64
+
+config GENERIC_BUG_RELATIVE_POINTERS
+ bool
config GENERIC_HWEIGHT
def_bool y
def_bool y
depends on X86_MPPARSE || X86_VOYAGER
-if ACPI
config X86_MPPARSE
- def_bool y
- bool "Enable MPS table"
+ bool "Enable MPS table" if ACPI
+ default y
depends on X86_LOCAL_APIC
help
For old smp systems that do not have proper acpi support. Newer systems
(esp with 64bit cpus) with acpi support, MADT and DSDT will override it
-endif
-
-if !ACPI
-config X86_MPPARSE
- def_bool y
- depends on X86_LOCAL_APIC
-endif
choice
prompt "Subarchitecture Type"
as R-8610-(G).
If you don't have one of these chips, you should say N here.
-config SCHED_NO_NO_OMIT_FRAME_POINTER
+config SCHED_OMIT_FRAME_POINTER
def_bool y
prompt "Single-depth WCHAN output"
- depends on X86_32
+ depends on X86
help
Calculate simpler /proc/<PID>/wchan values. If this option
is disabled then wchan values will recurse back to the
def_bool y
depends on X86_GENERICARCH
-config ES7000_CLUSTERED_APIC
- def_bool y
- depends on SMP && X86_ES7000 && MPENTIUMIII
-
source "arch/x86/Kconfig.cpu"
config HPET_TIMER
# need this always selected by IOMMU for the VIA workaround
config SWIOTLB
- bool
+ def_bool y if X86_64
help
Support for software bounce buffers used on x86-64 systems
which don't have a hardware IOMMU (e.g. the current generation
def_bool y
depends on X86_32 && X86_VISWS
+config X86_REROUTE_FOR_BROKEN_BOOT_IRQS
+ bool "Reroute for broken boot IRQs"
+ default n
+ depends on X86_IO_APIC
+ help
+ This option enables a workaround that fixes a source of
+ spurious interrupts. This is recommended when threaded
+ interrupt handling is used on systems where the generation of
+ superfluous "boot interrupts" cannot be disabled.
+
+ Some chipsets generate a legacy INTx "boot IRQ" when the IRQ
+ entry in the chipset's IO-APIC is masked (as, e.g. the RT
+ kernel does during interrupt handling). On chipsets where this
+ boot IRQ generation cannot be disabled, this workaround keeps
+ the original IRQ line masked so that only the equivalent "boot
+ IRQ" is delivered to the CPUs. The workaround also tells the
+ kernel to set up the IRQ handler on the boot IRQ line. In this
+ way only one interrupt is delivered to the kernel. Otherwise
+ the spurious second interrupt may cause the kernel to bring
+ down (vital) interrupt lines.
+
+ Only affects "broken" chipsets. Interrupt sharing may be
+ increased on these systems.
+
config X86_MCE
bool "Machine Check Exception"
depends on !X86_VOYAGER
config ARCH_PHYS_ADDR_T_64BIT
def_bool X86_64 || X86_PAE
+config DIRECT_GBPAGES
+ bool "Enable 1GB pages for kernel pagetables" if EMBEDDED
+ default y
+ depends on X86_64
+ help
+ Allow the kernel linear mapping to use 1GB pages on CPUs that
+ support it. This can improve the kernel's performance a tiny bit by
+ reducing TLB pressure. If in doubt, say "Y".
+
# Common NUMA Features
config NUMA
- bool "Numa Memory Allocation and Scheduler Support (EXPERIMENTAL)"
+ bool "Numa Memory Allocation and Scheduler Support"
depends on SMP
depends on X86_64 || (X86_32 && HIGHMEM64G && (X86_NUMAQ || X86_BIGSMP || X86_SUMMIT && ACPI) && EXPERIMENTAL)
default n if X86_PC
default y if (X86_NUMAQ || X86_SUMMIT || X86_BIGSMP)
help
Enable NUMA (Non Uniform Memory Access) support.
+
The kernel will try to allocate memory used by a CPU on the
local memory controller of the CPU and add some more
NUMA awareness to the kernel.
- For 32-bit this is currently highly experimental and should be only
- used for kernel development. It might also cause boot failures.
- For 64-bit this is recommended on all multiprocessor Opteron systems.
- If the system is EM64T, you should say N unless your system is
- EM64T NUMA.
+ For 64-bit this is recommended if the system is Intel Core i7
+ (or later), AMD Opteron, or EM64T NUMA.
+
+ For 32-bit this is only needed on (rare) 32-bit-only platforms
+ that support NUMA topologies, such as NUMAQ / Summit, or if you
+ boot a 32-bit kernel on a 64-bit NUMA platform.
+
+ Otherwise, you should say N.
comment "NUMA (Summit) requires SMP, 64GB highmem support, ACPI"
depends on X86_32 && X86_SUMMIT && (!HIGHMEM64G || !ACPI)
def_bool y
depends on X86_64 || (X86_32 && HIGHMEM)
+config ARCH_ENABLE_MEMORY_HOTREMOVE
+ def_bool y
+ depends on MEMORY_HOTPLUG
+
config HAVE_ARCH_EARLY_PFN_TO_NID
def_bool X86_64
depends on NUMA
many of the newer IBM Thinkpads. If you experience hangs when you
suspend, try setting this to Y. Otherwise, say N.
-config APM_REAL_MODE_POWER_OFF
- bool "Use real mode APM BIOS call to power off"
- help
- Use real mode APM BIOS calls to switch off the computer. This is
- a work-around for a number of buggy BIOSes. Switch this option on if
- your computer crashes instead of powering off properly.
-
endif # APM
source "arch/x86/kernel/cpu/cpufreq/Kconfig"
git.samba.org / sfrench / cifs-2.6.git / blobdiff