lib/Kconfig.kgdb

   1
   2 config HAVE_ARCH_KGDB
   3         bool
   4
   5 menuconfig KGDB
   6         bool "KGDB: kernel debugger"
   7         depends on HAVE_ARCH_KGDB
   8         depends on DEBUG_KERNEL && EXPERIMENTAL
   9         help
  10           If you say Y here, it will be possible to remotely debug the
  11           kernel using gdb.  It is recommended but not required, that
  12           you also turn on the kernel config option
  13           CONFIG_FRAME_POINTER to aid in producing more reliable stack
  14           backtraces in the external debugger.  Documentation of
  15           kernel debugger is available at http://kgdb.sourceforge.net
  16           as well as in DocBook form in Documentation/DocBook/.  If
  17           unsure, say N.
  18
  19 if KGDB
  20
  21 config KGDB_SERIAL_CONSOLE
  22         tristate "KGDB: use kgdb over the serial console"
  23         select CONSOLE_POLL
  24         select MAGIC_SYSRQ
  25         default y
  26         help
  27           Share a serial console with kgdb. Sysrq-g must be used
  28           to break in initially.
  29
  30 config KGDB_TESTS
  31         bool "KGDB: internal test suite"
  32         default n
  33         help
  34           This is a kgdb I/O module specifically designed to test
  35           kgdb's internal functions.  This kgdb I/O module is
  36           intended to for the development of new kgdb stubs
  37           as well as regression testing the kgdb internals.
  38           See the drivers/misc/kgdbts.c for the details about
  39           the tests.  The most basic of this I/O module is to boot
  40           a kernel boot arguments "kgdbwait kgdbts=V1F100"
  41
  42 config KGDB_TESTS_ON_BOOT
  43         bool "KGDB: Run tests on boot"
  44         depends on KGDB_TESTS
  45         default n
  46         help
  47           Run the kgdb tests on boot up automatically without the need
  48           to pass in a kernel parameter
  49
  50 config KGDB_TESTS_BOOT_STRING
  51         string "KGDB: which internal kgdb tests to run"
  52         depends on KGDB_TESTS_ON_BOOT
  53         default "V1F100"
  54         help
  55           This is the command string to send the kgdb test suite on
  56           boot.  See the drivers/misc/kgdbts.c for detailed
  57           information about other strings you could use beyond the
  58           default of V1F100.
  59
  60 config KGDB_LOW_LEVEL_TRAP
  61        bool "KGDB: Allow debugging with traps in notifiers"
  62        depends on X86 || MIPS
  63        default n
  64        help
  65          This will add an extra call back to kgdb for the breakpoint
  66          exception handler on which will will allow kgdb to step
  67          through a notify handler.
  68
  69 config KGDB_KDB
  70         bool "KGDB_KDB: include kdb frontend for kgdb"
  71         default n
  72         help
  73           KDB frontend for kernel
  74
  75 config KDB_KEYBOARD
  76         bool "KGDB_KDB: keyboard as input device"
  77         depends on VT && KGDB_KDB
  78         default n
  79         help
  80           KDB can use a PS/2 type keyboard for an input device
  81
  82 config KDB_CONTINUE_CATASTROPHIC
  83         int "KDB: continue after catastrophic errors"
  84         depends on KGDB_KDB
  85         default "0"
  86         help
  87           This integer controls the behaviour of kdb when the kernel gets a
  88           catastrophic error, i.e. for a panic or oops.
  89           When KDB is active and a catastrophic error occurs, nothing extra
  90           will happen until you type 'go'.
  91           CONFIG_KDB_CONTINUE_CATASTROPHIC == 0 (default). The first time
  92           you type 'go', you will be warned by kdb. The secend time you type
  93           'go', KDB tries to continue. No guarantees that the
  94           kernel is still usable in this situation.
  95           CONFIG_KDB_CONTINUE_CATASTROPHIC == 1. KDB tries to continue.
  96           No guarantees that the kernel is still usable in this situation.
  97           CONFIG_KDB_CONTINUE_CATASTROPHIC == 2. KDB forces a reboot.
  98           If you are not sure, say 0.
  99
 100 endif # KGDB