Commit 0e4bd10c authored by Linus Torvalds's avatar Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/x86

* git://git.kernel.org/pub/scm/linux/kernel/git/sam/x86:
  x86: kill the old i386 and x86_64 directories
  x86: move i386 and x86_64 Kconfig files to x86 directory
  kconfig: small code refactoring in kconfig Makefile
  x86: unification of i386 and x86_64 Kconfig.debug
  x86: move defconfig files for i386 and x86_64 to x86
  x86: move i386 and x86_64 Makefiles to arch/x86
parents ec3b67c1 208652d6
...@@ -196,6 +196,9 @@ CROSS_COMPILE ?= ...@@ -196,6 +196,9 @@ CROSS_COMPILE ?=
UTS_MACHINE := $(ARCH) UTS_MACHINE := $(ARCH)
SRCARCH := $(ARCH) SRCARCH := $(ARCH)
# for i386 and x86_64 we use SRCARCH equal to x86
SRCARCH := $(if $(filter x86_64 i386,$(SRCARCH)),x86,$(SRCARCH))
KCONFIG_CONFIG ?= .config KCONFIG_CONFIG ?= .config
# SHELL used by kbuild # SHELL used by kbuild
...@@ -418,7 +421,7 @@ ifeq ($(config-targets),1) ...@@ -418,7 +421,7 @@ ifeq ($(config-targets),1)
# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
# KBUILD_DEFCONFIG may point out an alternative default configuration # KBUILD_DEFCONFIG may point out an alternative default configuration
# used for 'make defconfig' # used for 'make defconfig'
include $(srctree)/arch/$(ARCH)/Makefile include $(srctree)/arch/$(SRCARCH)/Makefile
export KBUILD_DEFCONFIG export KBUILD_DEFCONFIG
config %config: scripts_basic outputmakefile FORCE config %config: scripts_basic outputmakefile FORCE
...@@ -497,7 +500,7 @@ else ...@@ -497,7 +500,7 @@ else
KBUILD_CFLAGS += -O2 KBUILD_CFLAGS += -O2
endif endif
include $(srctree)/arch/$(ARCH)/Makefile include $(srctree)/arch/$(SRCARCH)/Makefile
ifdef CONFIG_FRAME_POINTER ifdef CONFIG_FRAME_POINTER
KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
......
menu "Kernel hacking" menu "Kernel hacking"
config TRACE_IRQFLAGS_SUPPORT config TRACE_IRQFLAGS_SUPPORT
bool def_bool y
default y
source "lib/Kconfig.debug" source "lib/Kconfig.debug"
config EARLY_PRINTK config EARLY_PRINTK
bool "Early printk" if EMBEDDED && DEBUG_KERNEL bool "Early printk" if EMBEDDED && DEBUG_KERNEL
default y default y
depends on X86_32
help help
Write kernel log output directly into the VGA buffer or to a serial Write kernel log output directly into the VGA buffer or to a serial
port. port.
...@@ -37,10 +37,12 @@ config DEBUG_STACK_USAGE ...@@ -37,10 +37,12 @@ config DEBUG_STACK_USAGE
comment "Page alloc debug is incompatible with Software Suspend on i386" comment "Page alloc debug is incompatible with Software Suspend on i386"
depends on DEBUG_KERNEL && HIBERNATION depends on DEBUG_KERNEL && HIBERNATION
depends on X86_32
config DEBUG_PAGEALLOC config DEBUG_PAGEALLOC
bool "Debug page memory allocations" bool "Debug page memory allocations"
depends on DEBUG_KERNEL && !HIBERNATION && !HUGETLBFS depends on DEBUG_KERNEL && !HIBERNATION && !HUGETLBFS
depends on X86_32
help help
Unmap pages from the kernel linear mapping after free_pages(). Unmap pages from the kernel linear mapping after free_pages().
This results in a large slowdown, but helps to find certain types This results in a large slowdown, but helps to find certain types
...@@ -59,6 +61,7 @@ config DEBUG_RODATA ...@@ -59,6 +61,7 @@ config DEBUG_RODATA
config 4KSTACKS config 4KSTACKS
bool "Use 4Kb for kernel stacks instead of 8Kb" bool "Use 4Kb for kernel stacks instead of 8Kb"
depends on DEBUG_KERNEL depends on DEBUG_KERNEL
depends on X86_32
help help
If you say Y here the kernel will use a 4Kb stacksize for the If you say Y here the kernel will use a 4Kb stacksize for the
kernel stack attached to each process/thread. This facilitates kernel stack attached to each process/thread. This facilitates
...@@ -67,22 +70,50 @@ config 4KSTACKS ...@@ -67,22 +70,50 @@ config 4KSTACKS
will also use IRQ stacks to compensate for the reduced stackspace. will also use IRQ stacks to compensate for the reduced stackspace.
config X86_FIND_SMP_CONFIG config X86_FIND_SMP_CONFIG
bool def_bool y
depends on X86_LOCAL_APIC || X86_VOYAGER depends on X86_LOCAL_APIC || X86_VOYAGER
default y depends on X86_32
config X86_MPPARSE config X86_MPPARSE
bool def_bool y
depends on X86_LOCAL_APIC && !X86_VISWS depends on X86_LOCAL_APIC && !X86_VISWS
default y depends on X86_32
config DOUBLEFAULT config DOUBLEFAULT
default y default y
bool "Enable doublefault exception handler" if EMBEDDED bool "Enable doublefault exception handler" if EMBEDDED
depends on X86_32
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
hair.
config IOMMU_DEBUG
bool "Enable IOMMU debugging"
depends on IOMMU && DEBUG_KERNEL
depends on X86_64
help help
This option allows trapping of rare doublefault exceptions that Force the IOMMU to on even when you have less than 4GB of
would otherwise cause a system to silently reboot. Disabling this memory and add debugging code. On overflow always panic. And
option saves about 4k and might cause you much additional grey allow to enable IOMMU leak tracing. Can be disabled at boot
hair. time with iommu=noforce. This will also enable scatter gather
list merging. Currently not recommended for production
code. When you use it make sure you have a big enough
IOMMU/AGP aperture. Most of the options enabled by this can
be set more finegrained using the iommu= command line
options. See Documentation/x86_64/boot-options.txt for more
details.
config IOMMU_LEAK
bool "IOMMU leak tracing"
depends on DEBUG_KERNEL
depends on IOMMU_DEBUG
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.
#config X86_REMOTE_DEBUG
# bool "kgdb debugging stub"
endmenu endmenu
...@@ -287,7 +287,7 @@ config ES7000_CLUSTERED_APIC ...@@ -287,7 +287,7 @@ config ES7000_CLUSTERED_APIC
default y default y
depends on SMP && X86_ES7000 && MPENTIUMIII depends on SMP && X86_ES7000 && MPENTIUMIII
source "arch/i386/Kconfig.cpu" source "arch/x86/Kconfig.cpu"
config HPET_TIMER config HPET_TIMER
bool "HPET Timer Support" bool "HPET Timer Support"
...@@ -1272,7 +1272,7 @@ source "fs/Kconfig" ...@@ -1272,7 +1272,7 @@ source "fs/Kconfig"
source "kernel/Kconfig.instrumentation" source "kernel/Kconfig.instrumentation"
source "arch/i386/Kconfig.debug" source "arch/x86/Kconfig.debug"
source "security/Kconfig" source "security/Kconfig"
......
...@@ -835,7 +835,7 @@ source fs/Kconfig ...@@ -835,7 +835,7 @@ source fs/Kconfig
source "kernel/Kconfig.instrumentation" source "kernel/Kconfig.instrumentation"
source "arch/x86_64/Kconfig.debug" source "arch/x86/Kconfig.debug"
source "security/Kconfig" source "security/Kconfig"
......
# Unified Makefile for i386 and x86_64
# select defconfig based on actual architecture
KBUILD_DEFCONFIG := $(ARCH)_defconfig
# # No need to remake these files
$(srctree)/arch/x86/Makefile%: ;
ifeq ($(ARCH),i386)
include $(srctree)/arch/x86/Makefile_32
else
include $(srctree)/arch/x86/Makefile_64
endif
# #
# i386/Makefile # i386 Makefile
# #
# This file is included by the global makefile so that you can add your own # This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions # architecture-specific flags and dependencies. Remember to do have actions
...@@ -17,9 +17,6 @@ ...@@ -17,9 +17,6 @@
# 20050320 Kianusch Sayah Karadji <kianusch@sk-tech.net> # 20050320 Kianusch Sayah Karadji <kianusch@sk-tech.net>
# Added support for GEODE CPU # Added support for GEODE CPU
# Fill in SRCARCH
SRCARCH := x86
# BITS is used as extension for files which are available in a 32 bit # BITS is used as extension for files which are available in a 32 bit
# and a 64 bit version to simplify shared Makefiles. # and a 64 bit version to simplify shared Makefiles.
# e.g.: obj-y += foo_$(BITS).o # e.g.: obj-y += foo_$(BITS).o
...@@ -46,7 +43,7 @@ KBUILD_CFLAGS += -pipe -msoft-float -mregparm=3 -freg-struct-return ...@@ -46,7 +43,7 @@ KBUILD_CFLAGS += -pipe -msoft-float -mregparm=3 -freg-struct-return
KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2) KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)
# CPU-specific tuning. Anything which can be shared with UML should go here. # CPU-specific tuning. Anything which can be shared with UML should go here.
include $(srctree)/arch/i386/Makefile.cpu include $(srctree)/arch/x86/Makefile_32.cpu
# temporary until string.h is fixed # temporary until string.h is fixed
cflags-y += -ffreestanding cflags-y += -ffreestanding
......
# #
# x86_64/Makefile # x86_64 Makefile
# #
# This file is included by the global makefile so that you can add your own # This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions # architecture-specific flags and dependencies. Remember to do have actions
...@@ -21,9 +21,6 @@ ...@@ -21,9 +21,6 @@
# #
# $Id: Makefile,v 1.31 2002/03/22 15:56:07 ak Exp $ # $Id: Makefile,v 1.31 2002/03/22 15:56:07 ak Exp $
# Fill in SRCARCH
SRCARCH := x86
# BITS is used as extension for files which are available in a 32 bit # BITS is used as extension for files which are available in a 32 bit
# and a 64 bit version to simplify shared Makefiles. # and a 64 bit version to simplify shared Makefiles.
# e.g.: obj-y += foo_$(BITS).o # e.g.: obj-y += foo_$(BITS).o
......
menu "Kernel hacking"
config TRACE_IRQFLAGS_SUPPORT
bool
default y
source "lib/Kconfig.debug"
config DEBUG_RODATA
bool "Write protect kernel read-only data structures"
depends on DEBUG_KERNEL
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 option may have a slight performance impact because a portion
of the kernel code won't be covered by a 2MB TLB anymore.
If in doubt, say "N".
config IOMMU_DEBUG
depends on IOMMU && DEBUG_KERNEL
bool "Enable IOMMU debugging"
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
time with iommu=noforce. This will also enable scatter gather
list merging. Currently not recommended for production
code. When you use it make sure you have a big enough
IOMMU/AGP aperture. Most of the options enabled by this can
be set more finegrained using the iommu= command line
options. See Documentation/x86_64/boot-options.txt for more
details.
config IOMMU_LEAK
bool "IOMMU leak tracing"
depends on DEBUG_KERNEL
depends on IOMMU_DEBUG
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.
config DEBUG_STACKOVERFLOW
bool "Check for stack overflows"
depends on DEBUG_KERNEL
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
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.
This option will slow down process creation somewhat.
#config X86_REMOTE_DEBUG
# bool "kgdb debugging stub"
endmenu
...@@ -4,23 +4,30 @@ ...@@ -4,23 +4,30 @@
PHONY += oldconfig xconfig gconfig menuconfig config silentoldconfig update-po-config PHONY += oldconfig xconfig gconfig menuconfig config silentoldconfig update-po-config
# If a arch/$(SRCARCH)/Kconfig.$(ARCH) file exist use it
ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/Kconfig.$(ARCH)),)
Kconfig := arch/$(SRCARCH)/Kconfig.$(ARCH)
else
Kconfig := arch/$(SRCARCH)/Kconfig
endif
xconfig: $(obj)/qconf xconfig: $(obj)/qconf
$< arch/$(ARCH)/Kconfig $< $(Kconfig)
gconfig: $(obj)/gconf gconfig: $(obj)/gconf
$< arch/$(ARCH)/Kconfig $< $(Kconfig)
menuconfig: $(obj)/mconf menuconfig: $(obj)/mconf
$< arch/$(ARCH)/Kconfig $< $(Kconfig)
config: $(obj)/conf config: $(obj)/conf
$< arch/$(ARCH)/Kconfig $< $(Kconfig)
oldconfig: $(obj)/conf oldconfig: $(obj)/conf
$< -o arch/$(ARCH)/Kconfig $< -o $(Kconfig)
silentoldconfig: $(obj)/conf silentoldconfig: $(obj)/conf
$< -s arch/$(ARCH)/Kconfig $< -s $(Kconfig)
# Create new linux.po file # Create new linux.po file
# Adjust charset to UTF-8 in .po file to accept UTF-8 in Kconfig files # Adjust charset to UTF-8 in .po file to accept UTF-8 in Kconfig files
...@@ -45,27 +52,27 @@ update-po-config: $(obj)/kxgettext ...@@ -45,27 +52,27 @@ update-po-config: $(obj)/kxgettext
PHONY += randconfig allyesconfig allnoconfig allmodconfig defconfig PHONY += randconfig allyesconfig allnoconfig allmodconfig defconfig
randconfig: $(obj)/conf randconfig: $(obj)/conf
$< -r arch/$(ARCH)/Kconfig $< -r $(Kconfig)
allyesconfig: $(obj)/conf allyesconfig: $(obj)/conf
$< -y arch/$(ARCH)/Kconfig $< -y $(Kconfig)
allnoconfig: $(obj)/conf allnoconfig: $(obj)/conf
$< -n arch/$(ARCH)/Kconfig $< -n $(Kconfig)
allmodconfig: $(obj)/conf allmodconfig: $(obj)/conf
$< -m arch/$(ARCH)/Kconfig $< -m $(Kconfig)
defconfig: $(obj)/conf defconfig: $(obj)/conf
ifeq ($(KBUILD_DEFCONFIG),) ifeq ($(KBUILD_DEFCONFIG),)
$< -d arch/$(ARCH)/Kconfig $< -d $(Kconfig)
else else
@echo *** Default configuration is based on '$(KBUILD_DEFCONFIG)' @echo "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'"
$(Q)$< -D arch/$(ARCH)/configs/$(KBUILD_DEFCONFIG) arch/$(ARCH)/Kconfig $(Q)$< -D arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig)
endif endif
%_defconfig: $(obj)/conf %_defconfig: $(obj)/conf
$(Q)$< -D arch/$(ARCH)/configs/$@ arch/$(ARCH)/Kconfig $(Q)$< -D arch/$(SRCARCH)/configs/$@ $(Kconfig)
# Help text used by make help # Help text used by make help
help: help:
......
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