7d46d9e6db
let it rip! Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Ingo Molnar <mingo@elte.hu> [rebased for mainline inclusion] Signed-off-by: Vegard Nossum <vegardno@ifi.uio.no>
27 lines
977 B
Text
27 lines
977 B
Text
config DEBUG_PAGEALLOC
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bool "Debug page memory allocations"
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depends on DEBUG_KERNEL && ARCH_SUPPORTS_DEBUG_PAGEALLOC
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depends on !HIBERNATION || !PPC && !SPARC
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depends on !KMEMCHECK
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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 WANT_PAGE_DEBUG_FLAGS
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bool
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config PAGE_POISONING
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bool "Debug page memory allocations"
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depends on DEBUG_KERNEL && !ARCH_SUPPORTS_DEBUG_PAGEALLOC
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depends on !HIBERNATION
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select DEBUG_PAGEALLOC
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select WANT_PAGE_DEBUG_FLAGS
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help
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Fill the pages with poison patterns after free_pages() and verify
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the patterns before alloc_pages(). This results in a large slowdown,
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but helps to find certain types of memory corruptions.
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This option cannot enalbe with hibernation. Otherwise, it will get
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wrong messages for memory corruption because the free pages are not
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saved to the suspend image.
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