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[PATCH] x86_64: Make ACPI NUMA and NUMA emulation peers of K8_NUMA in Kconfig

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On x86_64 arches, there is no way to choose ACPI_NUMA without having to choose
K8_NUMA.  CONFIG_K8_NUMA is not needed for Intel EM64T NUMA boxes.  It also
looks odd if you have to select ACPI_NUMA from the power management menu.
This patch fixes those oddities.  Patch does the following:

1. Makes NUMA a config option like other arches
2. Makes topology detection options like K8_NUMA dependent on NUMA
3. Choosing ACPI NUMA detection can be done from the standard
   "Processor type and features" menu

AK: I fixed up the dependencies and changed the help texts a bit
on top of Kiran's patch.

Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: Shai Fultheim <shai@scalex86.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ravikiran G Thirumalai 2005-11-05 17:25:54 +01:00 committed by Linus Torvalds
parent efbbdce94f
commit b0bd35e622
1 changed files with 32 additions and 15 deletions
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47
arch/x86_64/Kconfig
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@ -226,22 +226,42 @@ config SCHED_SMT
source "kernel/Kconfig.preempt" source "kernel/Kconfig.preempt"
config K8_NUMA config NUMA
bool "K8 NUMA support" bool "Non Uniform Memory Access (NUMA) Support"
select NUMA
depends on SMP depends on SMP
help help
Enable NUMA (Non Unified Memory Architecture) support for Enable NUMA (Non Uniform Memory Access) support. The kernel
AMD Opteron Multiprocessor systems. The kernel will try to allocate will try to allocate memory used by a CPU on the local memory
memory used by a CPU on the local memory controller of the CPU controller of the CPU and add some more NUMA awareness to the kernel.
and add some more NUMA awareness to the kernel. This code is recommended on all multiprocessor Opteron systems.
This code is recommended on all multiprocessor Opteron systems If the system is EM64T, you should say N unless your system is EM64T
and normally doesn't hurt on others. NUMA.
config K8_NUMA
bool "Old style AMD Opteron NUMA detection"
depends on NUMA
default y
help
Enable K8 NUMA node topology detection. You should say Y here if
you have a multi processor AMD K8 system. This uses an old
method to read the NUMA configurtion directly from the builtin
Northbridge of Opteron. It is recommended to use X86_64_ACPI_NUMA
instead, which also takes priority if both are compiled in.
# Dummy CONFIG option to select ACPI_NUMA from drivers/acpi/Kconfig.
config X86_64_ACPI_NUMA
bool "ACPI NUMA detection"
depends on NUMA
select ACPI
select ACPI_NUMA
default y
help
Enable ACPI SRAT based node topology detection.
config NUMA_EMU config NUMA_EMU
bool "NUMA emulation support" bool "NUMA emulation"
select NUMA depends on NUMA
depends on SMP
help help
Enable NUMA emulation. A flat machine will be split Enable NUMA emulation. A flat machine will be split
into virtual nodes when booted with "numa=fake=N", where N is the into virtual nodes when booted with "numa=fake=N", where N is the
@ -252,9 +272,6 @@ config ARCH_DISCONTIGMEM_ENABLE
depends on NUMA depends on NUMA
default y default y
config NUMA
bool
default n
config ARCH_DISCONTIGMEM_ENABLE config ARCH_DISCONTIGMEM_ENABLE
def_bool y def_bool y