menu "Kernel hacking"
+config TRACE_IRQFLAGS_SUPPORT
+ bool
+ default y
+
source "lib/Kconfig.debug"
-# !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 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".
config IOMMU_DEBUG
- depends on GART_IOMMU && DEBUG_KERNEL
+ depends on IOMMU && DEBUG_KERNEL
bool "Enable IOMMU debugging"
help
Force the IOMMU to on even when you have less than 4GB of
options. See Documentation/x86_64/boot-options.txt for more
details.
-config KPROBES
- bool "Kprobes"
- depends on DEBUG_KERNEL
- help
- Kprobes allows you to trap at almost any kernel address and
- execute a callback function. register_kprobe() establishes
- a probepoint and specifies the callback. Kprobes is useful
- for kernel debugging, non-intrusive instrumentation and testing.
- If in doubt, say "N".
-
config IOMMU_LEAK
bool "IOMMU leak tracing"
depends on DEBUG_KERNEL
Add a simple leak tracer to the IOMMU code. This is useful when you
are debugging a buggy device driver that leaks IOMMU mappings.
+config DEBUG_STACKOVERFLOW
+ bool "Check for stack overflows"
+ depends on DEBUG_KERNEL
+ help
+ This option will cause messages to be printed if free stack space
+ drops below a certain limit.
+
+config DEBUG_STACK_USAGE
+ bool "Stack utilization instrumentation"
+ depends on DEBUG_KERNEL
+ help
+ Enables the display of the minimum amount of free stack which each
+ task has ever had available in the sysrq-T and sysrq-P debug output.
+
+ This option will slow down process creation somewhat.
+
#config X86_REMOTE_DEBUG
# bool "kgdb debugging stub"