697ae16ac0
DEBUG_PAGEALLOC is broken on m32r - the option had been blindly copied from i386; kernel_map_pages() had not and that's what is needed for DEBUG_PAGEALLOC to work (or link, while we are at it). Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
38 lines
1.1 KiB
Plaintext
38 lines
1.1 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 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 DEBUG_PAGEALLOC
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bool "Page alloc debugging"
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depends on DEBUG_KERNEL && BROKEN
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help
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Unmap pages from the kernel linear mapping after free_pages().
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This results in a large slowdown, but helps to find certain types
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of memory corruptions.
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config FRAME_POINTER
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bool "Compile the kernel with frame pointers"
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help
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If you say Y here the resulting kernel image will be slightly larger
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and slower, but it will give very useful debugging information.
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If you don't debug the kernel, you can say N, but we may not be able
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to solve problems without frame pointers.
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endmenu
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