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kgdb: remove the requirement for CONFIG_FRAME_POINTER
There is no technical reason that the kgdb core requires frame pointers. It is up to the end user of KGDB to decide if they need them or not. [ anemo@mba.ocn.ne.jp: removed frame pointers on mips ] Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
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@ -98,6 +98,14 @@
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"Kernel debugging" select "KGDB: kernel debugging with remote gdb".
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</para>
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<para>
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It is advised, but not required that you turn on the
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CONFIG_FRAME_POINTER kernel option. This option inserts code to
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into the compiled executable which saves the frame information in
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registers or on the stack at different points which will allow a
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debugger such as gdb to more accurately construct stack back traces
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while debugging the kernel.
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</para>
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<para>
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Next you should choose one of more I/O drivers to interconnect debugging
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host and debugged target. Early boot debugging requires a KGDB
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I/O driver that supports early debugging and the driver must be
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@ -4,14 +4,17 @@ config HAVE_ARCH_KGDB
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menuconfig KGDB
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bool "KGDB: kernel debugging with remote gdb"
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select FRAME_POINTER
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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. Documentation of kernel debugger is available
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at http://kgdb.sourceforge.net as well as in DocBook form
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in Documentation/DocBook/. If unsure, say N.
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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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