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Commit | Line | Data |
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1da177e4 LT |
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 |