| menu "Kernel hacking" |
| |
| source "lib/Kconfig.debug" |
| |
| # !SMP for now because the context switch early causes GPF in segment reloading |
| # and the GS base checking does the wrong thing then, causing a hang. |
| config CHECKING |
| bool "Additional run-time checks" |
| depends on DEBUG_KERNEL && !SMP |
| help |
| Enables some internal consistency checks for kernel debugging. |
| You should normally say N. |
| |
| config INIT_DEBUG |
| bool "Debug __init statements" |
| depends on DEBUG_KERNEL |
| help |
| Fill __init and __initdata at the end of boot. This helps debugging |
| illegal uses of __init and __initdata after initialization. |
| |
| config IOMMU_DEBUG |
| depends on GART_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 X86_REMOTE_DEBUG |
| # bool "kgdb debugging stub" |
| |
| endmenu |