| menu "Kernel hacking" |
| |
| source "lib/Kconfig.debug" |
| |
| config DEBUG_STACKOVERFLOW |
| bool "Check for stack overflows" |
| depends on DEBUG_KERNEL && PPC64 |
| help |
| This option will cause messages to be printed if free stack space |
| drops below a certain limit. |
| |
| config KPROBES |
| bool "Kprobes" |
| depends on DEBUG_KERNEL && PPC64 |
| 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 DEBUG_STACK_USAGE |
| bool "Stack utilization instrumentation" |
| depends on DEBUG_KERNEL && PPC64 |
| 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 DEBUGGER |
| bool "Enable debugger hooks" |
| depends on DEBUG_KERNEL |
| help |
| Include in-kernel hooks for kernel debuggers. Unless you are |
| intending to debug the kernel, say N here. |
| |
| config KGDB |
| bool "Include kgdb kernel debugger" |
| depends on DEBUGGER && (BROKEN || PPC_GEN550 || 4xx) |
| select DEBUG_INFO |
| help |
| Include in-kernel hooks for kgdb, the Linux kernel source level |
| debugger. See <http://kgdb.sourceforge.net/> for more information. |
| Unless you are intending to debug the kernel, say N here. |
| |
| choice |
| prompt "Serial Port" |
| depends on KGDB |
| default KGDB_TTYS1 |
| |
| config KGDB_TTYS0 |
| bool "ttyS0" |
| |
| config KGDB_TTYS1 |
| bool "ttyS1" |
| |
| config KGDB_TTYS2 |
| bool "ttyS2" |
| |
| config KGDB_TTYS3 |
| bool "ttyS3" |
| |
| endchoice |
| |
| config KGDB_CONSOLE |
| bool "Enable serial console thru kgdb port" |
| depends on KGDB && 8xx || CPM2 |
| help |
| If you enable this, all serial console messages will be sent |
| over the gdb stub. |
| If unsure, say N. |
| |
| config XMON |
| bool "Include xmon kernel debugger" |
| depends on DEBUGGER && !PPC_ISERIES |
| help |
| Include in-kernel hooks for the xmon kernel monitor/debugger. |
| Unless you are intending to debug the kernel, say N here. |
| Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise |
| nothing will appear on the screen (xmon writes directly to the |
| framebuffer memory). |
| The cmdline option 'xmon' or 'xmon=early' will drop into xmon |
| very early during boot. 'xmon=on' will just enable the xmon |
| debugger hooks. 'xmon=off' will disable the debugger hooks |
| if CONFIG_XMON_DEFAULT is set. |
| |
| config XMON_DEFAULT |
| bool "Enable xmon by default" |
| depends on XMON |
| help |
| xmon is normally disabled unless booted with 'xmon=on'. |
| Use 'xmon=off' to disable xmon init during runtime. |
| |
| config IRQSTACKS |
| bool "Use separate kernel stacks when processing interrupts" |
| depends on PPC64 |
| help |
| If you say Y here the kernel will use separate kernel stacks |
| for handling hard and soft interrupts. This can help avoid |
| overflowing the process kernel stacks. |
| |
| config BDI_SWITCH |
| bool "Include BDI-2000 user context switcher" |
| depends on DEBUG_KERNEL && PPC32 |
| help |
| Include in-kernel support for the Abatron BDI2000 debugger. |
| Unless you are intending to debug the kernel with one of these |
| machines, say N here. |
| |
| config BOOTX_TEXT |
| bool "Support for early boot text console (BootX or OpenFirmware only)" |
| depends PPC_OF && !PPC_ISERIES |
| help |
| Say Y here to see progress messages from the boot firmware in text |
| mode. Requires either BootX or Open Firmware. |
| |
| config SERIAL_TEXT_DEBUG |
| bool "Support for early boot texts over serial port" |
| depends on 4xx || LOPEC || MV64X60 || PPLUS || PRPMC800 || \ |
| PPC_GEN550 || PPC_MPC52xx |
| |
| config PPC_OCP |
| bool |
| depends on IBM_OCP || XILINX_OCP |
| default y |
| |
| endmenu |