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
   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         depends on TTY
  26         default y
  27         help
  28           Share a serial console with kgdb. Sysrq-g must be used
  29           to break in initially.
  30
  31 config KGDB_TESTS
  32         bool "KGDB: internal test suite"
  33         default n
  34         help
  35           This is a kgdb I/O module specifically designed to test
  36           kgdb's internal functions.  This kgdb I/O module is
  37           intended to for the development of new kgdb stubs
  38           as well as regression testing the kgdb internals.
  39           See the drivers/misc/kgdbts.c for the details about
  40           the tests.  The most basic of this I/O module is to boot
  41           a kernel boot arguments "kgdbwait kgdbts=V1F100"
  42
  43 config KGDB_TESTS_ON_BOOT
  44         bool "KGDB: Run tests on boot"
  45         depends on KGDB_TESTS
  46         default n
  47         help
  48           Run the kgdb tests on boot up automatically without the need
  49           to pass in a kernel parameter
  50
  51 config KGDB_TESTS_BOOT_STRING
  52         string "KGDB: which internal kgdb tests to run"
  53         depends on KGDB_TESTS_ON_BOOT
  54         default "V1F100"
  55         help
  56           This is the command string to send the kgdb test suite on
  57           boot.  See the drivers/misc/kgdbts.c for detailed
  58           information about other strings you could use beyond the
  59           default of V1F100.
  60
  61 config KGDB_LOW_LEVEL_TRAP
  62        bool "KGDB: Allow debugging with traps in notifiers"
  63        depends on X86 || MIPS
  64        default n
  65        help
  66          This will add an extra call back to kgdb for the breakpoint
  67          exception handler on which will will allow kgdb to step
  68          through a notify handler.
  69
  70 config KGDB_KDB
  71         bool "KGDB_KDB: include kdb frontend for kgdb"
  72         default n
  73         help
  74           KDB frontend for kernel
  75
  76 config KDB_KEYBOARD
  77         bool "KGDB_KDB: keyboard as input device"
  78         depends on VT && KGDB_KDB
  79         default n
  80         help
  81           KDB can use a PS/2 type keyboard for an input device
  82
  83 config KDB_CONTINUE_CATASTROPHIC
  84         int "KDB: continue after catastrophic errors"
  85         depends on KGDB_KDB
  86         default "0"
  87         help
  88           This integer controls the behaviour of kdb when the kernel gets a
  89           catastrophic error, i.e. for a panic or oops.
  90           When KDB is active and a catastrophic error occurs, nothing extra
  91           will happen until you type 'go'.
  92           CONFIG_KDB_CONTINUE_CATASTROPHIC == 0 (default). The first time
  93           you type 'go', you will be warned by kdb. The secend time you type
  94           'go', KDB tries to continue. No guarantees that the
  95           kernel is still usable in this situation.
  96           CONFIG_KDB_CONTINUE_CATASTROPHIC == 1. KDB tries to continue.
  97           No guarantees that the kernel is still usable in this situation.
  98           CONFIG_KDB_CONTINUE_CATASTROPHIC == 2. KDB forces a reboot.
  99           If you are not sure, say 0.
 100
 101 endif # KGDB