Commit 5f5ddfb3 authored by Jason Wessel's avatar Jason Wessel
Browse files

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: default avatarJason Wessel <jason.wessel@windriver.com>
parent 94ad374a

Documentation/DocBook/kgdb.tmpl

+8 −0
Original line number Diff line number Diff line
@@ -98,6 +98,14 @@ 
    "Kernel debugging" select "KGDB: kernel debugging with remote gdb".

    </para>

    <para>

    It is advised, but not required that you turn on the

    CONFIG_FRAME_POINTER kernel option.  This option inserts code to

    into the compiled executable which saves the frame information in

    registers or on the stack at different points which will allow a

    debugger such as gdb to more accurately construct stack back traces

    while debugging the kernel.

    </para>

    <para>

    Next you should choose one of more I/O drivers to interconnect debugging

    host and debugged target.  Early boot debugging requires a KGDB

    I/O driver that supports early debugging and the driver must be

lib/Kconfig.kgdb

+7 −4
Original line number Diff line number Diff line
@@ -4,14 +4,17 @@ config HAVE_ARCH_KGDB 


menuconfig KGDB

	bool "KGDB: kernel debugging with remote gdb"

	select FRAME_POINTER

	depends on HAVE_ARCH_KGDB

	depends on DEBUG_KERNEL && EXPERIMENTAL

	help

	  If you say Y here, it will be possible to remotely debug the

	  kernel using gdb.  Documentation of kernel debugger is available

	  at http://kgdb.sourceforge.net as well as in DocBook form

	  in Documentation/DocBook/.  If unsure, say N.

	  kernel using gdb.  It is recommended but not required, that

	  you also turn on the kernel config option

	  CONFIG_FRAME_POINTER to aid in producing more reliable stack

	  backtraces in the external debugger.  Documentation of

	  kernel debugger is available at http://kgdb.sourceforge.net

	  as well as in DocBook form in Documentation/DocBook/.  If

	  unsure, say N.



if KGDB