Commit d013a27c authored by Randy Dunlap's avatar Randy Dunlap Committed by Sam Ravnborg
Browse files

x86: unification of i386 and x86_64 Kconfig.debug 



Adding proper dependencies so the two Kconfig.debug files
are now identical and move the result file to x86.

Signed-off-by: default avatarRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
parent 2266cfd5

arch/i386/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -1272,7 +1272,7 @@ source "fs/Kconfig" 


source "kernel/Kconfig.instrumentation"



source "arch/i386/Kconfig.debug"

source "arch/x86/Kconfig.debug"



source "security/Kconfig"

arch/i386/Kconfig.debug→arch/x86/Kconfig.debug

+41 −10
Original line number Diff line number Diff line 
menu "Kernel hacking"



config TRACE_IRQFLAGS_SUPPORT

	bool

	default y

	def_bool y



source "lib/Kconfig.debug"



config EARLY_PRINTK

	bool "Early printk" if EMBEDDED && DEBUG_KERNEL

	default y

	depends on X86_32

	help

	  Write kernel log output directly into the VGA buffer or to a serial

	  port.
@@ -37,10 +37,12 @@ config DEBUG_STACK_USAGE 


comment "Page alloc debug is incompatible with Software Suspend on i386"

	depends on DEBUG_KERNEL && HIBERNATION

	depends on X86_32



config DEBUG_PAGEALLOC

	bool "Debug page memory allocations"

	depends on DEBUG_KERNEL && !HIBERNATION && !HUGETLBFS

	depends on X86_32

	help

	  Unmap pages from the kernel linear mapping after free_pages().

	  This results in a large slowdown, but helps to find certain types
@@ -59,6 +61,7 @@ config DEBUG_RODATA 
config 4KSTACKS

	bool "Use 4Kb for kernel stacks instead of 8Kb"

	depends on DEBUG_KERNEL

	depends on X86_32

	help

	  If you say Y here the kernel will use a 4Kb stacksize for the

	  kernel stack attached to each process/thread. This facilitates
@@ -67,22 +70,50 @@ config 4KSTACKS 
	  will also use IRQ stacks to compensate for the reduced stackspace.



config X86_FIND_SMP_CONFIG

	bool

	def_bool y

	depends on X86_LOCAL_APIC || X86_VOYAGER

	default y

	depends on X86_32



config X86_MPPARSE

	bool

	def_bool y

	depends on X86_LOCAL_APIC && !X86_VISWS

	default y

	depends on X86_32



config DOUBLEFAULT

	default y

	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

	  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 X86_REMOTE_DEBUG

#	bool "kgdb debugging stub"



endmenu

arch/x86_64/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -835,7 +835,7 @@ source fs/Kconfig 


source "kernel/Kconfig.instrumentation"



source "arch/x86_64/Kconfig.debug"

source "arch/x86/Kconfig.debug"



source "security/Kconfig"

arch/x86_64/Kconfig.debug

deleted100644 → 0
+0 −61
Original line number Diff line number Diff line 
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

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