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Linux/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 which will allow kgdb to step through a
 68          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

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