This option will slow down process creation somewhat.
-comment "Page alloc debug is incompatible with Software Suspend on i386"
- depends on DEBUG_KERNEL && HIBERNATION
- depends on X86_32
-
config DEBUG_PAGEALLOC
bool "Debug page memory allocations"
- depends on DEBUG_KERNEL && X86_32
+ depends on DEBUG_KERNEL
help
Unmap pages from the kernel linear mapping after free_pages().
This results in a large slowdown, but helps to find certain types
Say N if unsure.
+config X86_PTDUMP
+ bool "Export kernel pagetable layout to userspace via debugfs"
+ depends on DEBUG_KERNEL
+ select DEBUG_FS
+ help
+ Say Y here if you want to show the kernel pagetable layout in a
+ debugfs file. This information is only useful for kernel developers
+ who are working in architecture specific areas of the kernel.
+ It is probably not a good idea to enable this feature in a production
+ kernel.
+ If in doubt, say "N"
+
config DEBUG_RODATA
bool "Write protect kernel read-only data structures"
default y
choice
prompt "IO delay type"
- default IO_DELAY_0XED
+ default IO_DELAY_0X80
config IO_DELAY_0X80
bool "port 0x80 based port-IO delay [recommended]"
This option will cause struct boot_params to be exported via debugfs.
config CPA_DEBUG
- bool "CPA self test code"
+ bool "CPA self-test code"
depends on DEBUG_KERNEL
help
- Do change_page_attr self tests at boot.
+ Do change_page_attr() self-tests every 30 seconds.
endmenu