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3b0eb71ec9
Added missing Kconfig option KDB_CONTINUE_CATASTROPHIC which lead to a dead
ifdef block in kernel/debug/kdb/kdb_main.c:73-75.
The code using KDB_CONTINUE_CATASTROPHIC was originally introduced in
commit '5d5314d6795f3c1c0f415348ff8c51f7de042b77' by Jason Wessel.
This patchset ("kdb: core for kgdb back end (1 of 2)")
added platform independent part of kdb to the linux kernel.
The Kernel option however, even though it had the same options and
behaviour on all supported architectures, was part of the x86 and
ia64 patchset of KDB and therefore not pulled into the mainline kernel tree.
I actually took the originally written Kconfig by
Keith Owens <kaos@sgi.com> (2003-06-20 according to KDB changelog)
and changed it to reflect the correct behaviour,
as the KDUMP patchset is not part of the kernel and the expected
functionality is missing from it.
Signed-off-by: Robert Obermeier <obbi89@googlemail.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
101 lines
3.1 KiB
Plaintext
101 lines
3.1 KiB
Plaintext
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config HAVE_ARCH_KGDB
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bool
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menuconfig KGDB
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bool "KGDB: kernel debugger"
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depends on HAVE_ARCH_KGDB
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depends on DEBUG_KERNEL && EXPERIMENTAL
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help
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If you say Y here, it will be possible to remotely debug the
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kernel using gdb. It is recommended but not required, that
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you also turn on the kernel config option
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CONFIG_FRAME_POINTER to aid in producing more reliable stack
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backtraces in the external debugger. Documentation of
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kernel debugger is available at http://kgdb.sourceforge.net
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as well as in DocBook form in Documentation/DocBook/. If
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unsure, say N.
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if KGDB
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config KGDB_SERIAL_CONSOLE
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tristate "KGDB: use kgdb over the serial console"
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select CONSOLE_POLL
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select MAGIC_SYSRQ
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default y
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help
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Share a serial console with kgdb. Sysrq-g must be used
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to break in initially.
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config KGDB_TESTS
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bool "KGDB: internal test suite"
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default n
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help
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This is a kgdb I/O module specifically designed to test
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kgdb's internal functions. This kgdb I/O module is
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intended to for the development of new kgdb stubs
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as well as regression testing the kgdb internals.
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See the drivers/misc/kgdbts.c for the details about
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the tests. The most basic of this I/O module is to boot
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a kernel boot arguments "kgdbwait kgdbts=V1F100"
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config KGDB_TESTS_ON_BOOT
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bool "KGDB: Run tests on boot"
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depends on KGDB_TESTS
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default n
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help
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Run the kgdb tests on boot up automatically without the need
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to pass in a kernel parameter
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config KGDB_TESTS_BOOT_STRING
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string "KGDB: which internal kgdb tests to run"
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depends on KGDB_TESTS_ON_BOOT
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default "V1F100"
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help
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This is the command string to send the kgdb test suite on
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boot. See the drivers/misc/kgdbts.c for detailed
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information about other strings you could use beyond the
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default of V1F100.
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config KGDB_LOW_LEVEL_TRAP
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bool "KGDB: Allow debugging with traps in notifiers"
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depends on X86 || MIPS
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default n
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help
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This will add an extra call back to kgdb for the breakpoint
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exception handler on which will will allow kgdb to step
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through a notify handler.
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config KGDB_KDB
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bool "KGDB_KDB: include kdb frontend for kgdb"
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default n
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help
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KDB frontend for kernel
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config KDB_KEYBOARD
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bool "KGDB_KDB: keyboard as input device"
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depends on VT && KGDB_KDB
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default n
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help
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KDB can use a PS/2 type keyboard for an input device
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config KDB_CONTINUE_CATASTROPHIC
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int "KDB: continue after catastrophic errors"
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depends on KGDB_KDB
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default "0"
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help
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This integer controls the behaviour of kdb when the kernel gets a
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catastrophic error, i.e. for a panic or oops.
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When KDB is active and a catastrophic error occurs, nothing extra
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will happen until you type 'go'.
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CONFIG_KDB_CONTINUE_CATASTROPHIC == 0 (default). The first time
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you type 'go', you will be warned by kdb. The secend time you type
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'go', KDB tries to continue. No guarantees that the
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kernel is still usable in this situation.
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CONFIG_KDB_CONTINUE_CATASTROPHIC == 1. KDB tries to continue.
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No guarantees that the kernel is still usable in this situation.
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CONFIG_KDB_CONTINUE_CATASTROPHIC == 2. KDB forces a reboot.
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If you are not sure, say 0.
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endif # KGDB
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