| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | menu "Kernel hacking" |
| 2 | |
| 3 | source "lib/Kconfig.debug" |
| 4 | |
| 5 | # !SMP for now because the context switch early causes GPF in segment reloading |
| 6 | # and the GS base checking does the wrong thing then, causing a hang. |
| 7 | config CHECKING |
| 8 | bool "Additional run-time checks" |
| 9 | depends on DEBUG_KERNEL && !SMP |
| 10 | help |
| 11 | Enables some internal consistency checks for kernel debugging. |
| 12 | You should normally say N. |
| 13 | |
| 14 | config INIT_DEBUG |
| 15 | bool "Debug __init statements" |
| 16 | depends on DEBUG_KERNEL |
| 17 | help |
| 18 | Fill __init and __initdata at the end of boot. This helps debugging |
| 19 | illegal uses of __init and __initdata after initialization. |
| 20 | |
| 21 | config IOMMU_DEBUG |
| 22 | depends on GART_IOMMU && DEBUG_KERNEL |
| 23 | bool "Enable IOMMU debugging" |
| 24 | help |
| 25 | Force the IOMMU to on even when you have less than 4GB of |
| 26 | memory and add debugging code. On overflow always panic. And |
| 27 | allow to enable IOMMU leak tracing. Can be disabled at boot |
| 28 | time with iommu=noforce. This will also enable scatter gather |
| 29 | list merging. Currently not recommended for production |
| 30 | code. When you use it make sure you have a big enough |
| 31 | IOMMU/AGP aperture. Most of the options enabled by this can |
| 32 | be set more finegrained using the iommu= command line |
| 33 | options. See Documentation/x86_64/boot-options.txt for more |
| 34 | details. |
| 35 | |
| 36 | config KPROBES |
| 37 | bool "Kprobes" |
| 38 | depends on DEBUG_KERNEL |
| 39 | help |
| 40 | Kprobes allows you to trap at almost any kernel address and |
| 41 | execute a callback function. register_kprobe() establishes |
| 42 | a probepoint and specifies the callback. Kprobes is useful |
| 43 | for kernel debugging, non-intrusive instrumentation and testing. |
| 44 | If in doubt, say "N". |
| 45 | |
| 46 | config IOMMU_LEAK |
| 47 | bool "IOMMU leak tracing" |
| 48 | depends on DEBUG_KERNEL |
| 49 | depends on IOMMU_DEBUG |
| 50 | help |
| 51 | Add a simple leak tracer to the IOMMU code. This is useful when you |
| 52 | are debugging a buggy device driver that leaks IOMMU mappings. |
| 53 | |
| 54 | #config X86_REMOTE_DEBUG |
| 55 | # bool "kgdb debugging stub" |
| 56 | |
| 57 | endmenu |