-# !SMP for now because the context switch early causes GPF in segment reloading
-# and the GS base checking does the wrong thing then, causing a hang.
-config CHECKING
- bool "Additional run-time checks"
- depends on DEBUG_KERNEL && !SMP
- help
- Enables some internal consistency checks for kernel debugging.
- You should normally say N.
-
-config INIT_DEBUG
- bool "Debug __init statements"
- depends on DEBUG_KERNEL
- help
- Fill __init and __initdata at the end of boot. This helps debugging
- illegal uses of __init and __initdata after initialization.
-
-config SCHEDSTATS
- bool "Collect scheduler statistics"
- depends on DEBUG_KERNEL && PROC_FS
- help
- If you say Y here, additional code will be inserted into the
- scheduler and related routines to collect statistics about
- scheduler behavior and provide them in /proc/schedstat. These
- stats may be useful for both tuning and debugging the scheduler
- If you aren't debugging the scheduler or trying to tune a specific
- application, you can say N to avoid the very slight overhead
- this adds.
+config DEBUG_RODATA
+ bool "Write protect kernel read-only data structures"
+ depends on DEBUG_KERNEL
+ help
+ Mark the kernel read-only data as write-protected in the pagetables,
+ in order to catch accidental (and incorrect) writes to such const data.
+ This option may have a slight performance impact because a portion
+ of the kernel code won't be covered by a 2MB TLB anymore.
+ If in doubt, say "N".