| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | menu "Kernel hacking" |
| 2 | |
| 3 | source "lib/Kconfig.debug" |
| 4 | |
| 5 | config DEBUG_STACKOVERFLOW |
| 6 | bool "Check for stack overflows" |
| 7 | depends on DEBUG_KERNEL |
| Jesper Juhl | e685752 | 2005-05-05 16:15:12 -0700 | [diff] [blame] | 8 | help |
| 9 | This option will cause messages to be printed if free stack space |
| 10 | drops below a certain limit. |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | |
| 12 | config KPROBES |
| 13 | bool "Kprobes" |
| 14 | depends on DEBUG_KERNEL |
| 15 | help |
| 16 | Kprobes allows you to trap at almost any kernel address and |
| 17 | execute a callback function. register_kprobe() establishes |
| 18 | a probepoint and specifies the callback. Kprobes is useful |
| 19 | for kernel debugging, non-intrusive instrumentation and testing. |
| 20 | If in doubt, say "N". |
| 21 | |
| 22 | config DEBUG_STACK_USAGE |
| 23 | bool "Stack utilization instrumentation" |
| 24 | depends on DEBUG_KERNEL |
| 25 | help |
| 26 | Enables the display of the minimum amount of free stack which each |
| 27 | task has ever had available in the sysrq-T and sysrq-P debug output. |
| 28 | |
| 29 | This option will slow down process creation somewhat. |
| 30 | |
| 31 | config DEBUGGER |
| 32 | bool "Enable debugger hooks" |
| 33 | depends on DEBUG_KERNEL |
| 34 | help |
| 35 | Include in-kernel hooks for kernel debuggers. Unless you are |
| 36 | intending to debug the kernel, say N here. |
| 37 | |
| 38 | config XMON |
| 39 | bool "Include xmon kernel debugger" |
| 40 | depends on DEBUGGER && !PPC_ISERIES |
| 41 | help |
| 42 | Include in-kernel hooks for the xmon kernel monitor/debugger. |
| 43 | Unless you are intending to debug the kernel, say N here. |
| Olaf Hering | b749bfc | 2005-09-03 15:55:58 -0700 | [diff] [blame] | 44 | Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise |
| 45 | nothing will appear on the screen (xmon writes directly to the |
| 46 | framebuffer memory). |
| 47 | The cmdline option 'xmon' or 'xmon=early' will drop into xmon very |
| 48 | early during boot. 'xmon=on' will just enable the xmon debugger hooks. |
| 49 | 'xmon=off' will disable the debugger hooks if CONFIG_XMON_DEFAULT is set. |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
| 51 | config XMON_DEFAULT |
| 52 | bool "Enable xmon by default" |
| 53 | depends on XMON |
| Olaf Hering | b749bfc | 2005-09-03 15:55:58 -0700 | [diff] [blame] | 54 | help |
| 55 | xmon is normally disabled unless booted with 'xmon=on'. |
| 56 | Use 'xmon=off' to disable xmon init during runtime. |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
| 58 | config PPCDBG |
| 59 | bool "Include PPCDBG realtime debugging" |
| 60 | depends on DEBUG_KERNEL |
| 61 | |
| 62 | config IRQSTACKS |
| 63 | bool "Use separate kernel stacks when processing interrupts" |
| 64 | help |
| 65 | If you say Y here the kernel will use separate kernel stacks |
| 66 | for handling hard and soft interrupts. This can help avoid |
| 67 | overflowing the process kernel stacks. |
| 68 | |
| 69 | endmenu |