menu "Kernel hacking"

config TRACE_IRQFLAGS_SUPPORT
	bool
	default y

source "lib/Kconfig.debug"

config DEBUG_STACK_USAGE
	bool "Enable 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 DEBUG_DCFLUSH
	bool "D-cache flush debugging"
	depends on SPARC64 && DEBUG_KERNEL

config STACK_DEBUG
	bool "Stack Overflow Detection Support"

config MCOUNT
	bool
	depends on SPARC64
	depends on STACK_DEBUG || FUNCTION_TRACER
	default y

config FRAME_POINTER
	bool
	depends on MCOUNT
	default y

config DEBUG_STRICT_USER_COPY_CHECKS
	bool "Strict copy size checks"
	depends on DEBUG_KERNEL && !TRACE_BRANCH_PROFILING
	---help---
	  Enabling this option turns a certain set of sanity checks for user
	  copy operations into compile time failures.

	  The copy_from_user() etc checks are there to help test if there
	  are sufficient security checks on the length argument of
	  the copy operation, by having gcc prove that the argument is
	  within bounds.

	  If unsure, or if you run an older (pre 4.4) gcc, say N.

endmenu