| menu "Kernel hacking" | 
 |  | 
 | config TRACE_IRQFLAGS_SUPPORT | 
 | 	bool | 
 | 	default y | 
 |  | 
 | source "lib/Kconfig.debug" | 
 |  | 
 | config 4KSTACKS | 
 | 	bool "Use 4Kb for kernel stacks instead of 8Kb" | 
 | 	depends on DEBUG_KERNEL | 
 | 	help | 
 | 	  If you say Y here the kernel will use a 4Kb stacksize for the | 
 | 	  kernel stack attached to each process/thread. This facilitates | 
 | 	  running more threads on a system and also reduces the pressure | 
 | 	  on the VM subsystem for higher order allocations. This option | 
 | 	  will also use IRQ stacks to compensate for the reduced stackspace. | 
 |  | 
 | config METAG_FUNCTION_TRACE | 
 | 	bool "Output Meta real-time trace data for function entry/exit" | 
 | 	help | 
 | 	  If you say Y here the kernel will use the Meta hardware trace | 
 | 	  unit to output information about function entry and exit that | 
 | 	  can be used by a debugger for profiling and call-graphs. | 
 |  | 
 | config METAG_POISON_CATCH_BUFFERS | 
 | 	bool "Poison catch buffer contents on kernel entry" | 
 | 	help | 
 | 	  If you say Y here the kernel will write poison data to the | 
 | 	  catch buffer registers on kernel entry. This will make any | 
 | 	  problem with catch buffer handling much more apparent. | 
 |  | 
 | endmenu |