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mm: debug-pagealloc: fix kconfig dependency warning

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Fix kconfig dependency warning to satisfy dependencies:

warning: (PAGE_POISONING) selects DEBUG_PAGEALLOC which has unmet
direct dependencies (DEBUG_KERNEL && ARCH_SUPPORTS_DEBUG_PAGEALLOC &&
(!HIBERNATION || !PPC && !SPARC) && !KMEMCHECK)

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Akinobu Mita 2011-03-22 16:32:46 -07:00 • committed by Linus Torvalds
parent 1d16871d8c
commit 7bc32f6f90
1 changed files with 11 additions and 14 deletions
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25
mm/Kconfig.debug
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@ -1,27 +1,24 @@
config DEBUG_PAGEALLOC config DEBUG_PAGEALLOC
bool "Debug page memory allocations" bool "Debug page memory allocations"
depends on DEBUG_KERNEL && ARCH_SUPPORTS_DEBUG_PAGEALLOC depends on DEBUG_KERNEL
depends on !HIBERNATION || !PPC && !SPARC depends on !HIBERNATION || ARCH_SUPPORTS_DEBUG_PAGEALLOC && !PPC && !SPARC
depends on !KMEMCHECK depends on !KMEMCHECK
select PAGE_POISONING if !ARCH_SUPPORTS_DEBUG_PAGEALLOC
---help--- ---help---
Unmap pages from the kernel linear mapping after free_pages(). Unmap pages from the kernel linear mapping after free_pages().
This results in a large slowdown, but helps to find certain types This results in a large slowdown, but helps to find certain types
of memory corruption. of memory corruption.
For architectures which don't enable ARCH_SUPPORTS_DEBUG_PAGEALLOC,
fill the pages with poison patterns after free_pages() and verify
the patterns before alloc_pages(). Additionally,
this option cannot be enabled in combination with hibernation as
that would result in incorrect warnings of memory corruption after
a resume because free pages are not saved to the suspend image.
config WANT_PAGE_DEBUG_FLAGS config WANT_PAGE_DEBUG_FLAGS
bool bool
config PAGE_POISONING config PAGE_POISONING
bool "Debug page memory allocations" bool
depends on DEBUG_KERNEL && !ARCH_SUPPORTS_DEBUG_PAGEALLOC
depends on !HIBERNATION
select DEBUG_PAGEALLOC
select WANT_PAGE_DEBUG_FLAGS select WANT_PAGE_DEBUG_FLAGS
---help---
Fill the pages with poison patterns after free_pages() and verify
the patterns before alloc_pages(). This results in a large slowdown,
but helps to find certain types of memory corruption.
This option cannot be enabled in combination with hibernation as
that would result in incorrect warnings of memory corruption after
a resume because free pages are not saved to the suspend image.