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b749bfcd1b
xmon will do nothing but noise on a G5 if BOOTX_TEXT is not enabled. mention the recognized kernel cmdline options for xmon. Signed-off-by: Olaf Hering <olh@suse.de> Cc: Paul Mackeras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
70 lines
2.2 KiB
Plaintext
70 lines
2.2 KiB
Plaintext
menu "Kernel hacking"
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source "lib/Kconfig.debug"
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config DEBUG_STACKOVERFLOW
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bool "Check for stack overflows"
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depends on DEBUG_KERNEL
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help
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This option will cause messages to be printed if free stack space
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drops below a certain limit.
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config KPROBES
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bool "Kprobes"
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depends on DEBUG_KERNEL
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help
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Kprobes allows you to trap at almost any kernel address and
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execute a callback function. register_kprobe() establishes
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a probepoint and specifies the callback. Kprobes is useful
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for kernel debugging, non-intrusive instrumentation and testing.
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If in doubt, say "N".
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config DEBUG_STACK_USAGE
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bool "Stack utilization instrumentation"
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depends on DEBUG_KERNEL
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help
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Enables the display of the minimum amount of free stack which each
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task has ever had available in the sysrq-T and sysrq-P debug output.
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This option will slow down process creation somewhat.
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config DEBUGGER
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bool "Enable debugger hooks"
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depends on DEBUG_KERNEL
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help
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Include in-kernel hooks for kernel debuggers. Unless you are
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intending to debug the kernel, say N here.
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config XMON
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bool "Include xmon kernel debugger"
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depends on DEBUGGER && !PPC_ISERIES
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help
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Include in-kernel hooks for the xmon kernel monitor/debugger.
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Unless you are intending to debug the kernel, say N here.
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Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise
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nothing will appear on the screen (xmon writes directly to the
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framebuffer memory).
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The cmdline option 'xmon' or 'xmon=early' will drop into xmon very
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early during boot. 'xmon=on' will just enable the xmon debugger hooks.
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'xmon=off' will disable the debugger hooks if CONFIG_XMON_DEFAULT is set.
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config XMON_DEFAULT
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bool "Enable xmon by default"
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depends on XMON
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help
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xmon is normally disabled unless booted with 'xmon=on'.
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Use 'xmon=off' to disable xmon init during runtime.
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config PPCDBG
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bool "Include PPCDBG realtime debugging"
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depends on DEBUG_KERNEL
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config IRQSTACKS
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bool "Use separate kernel stacks when processing interrupts"
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help
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If you say Y here the kernel will use separate kernel stacks
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for handling hard and soft interrupts. This can help avoid
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overflowing the process kernel stacks.
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endmenu
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