leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

kgdb: remove the requirement for CONFIG_FRAME_POINTER

Browse Source 
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>
This commit is contained in:
Jason Wessel 2008-08-01 08:39:34 -05:00
parent 94ad374a07
commit 5f5ddfb360
2 changed files with 15 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
Documentation/DocBook/kgdb.tmpl
View File

@ -98,6 +98,14 @@
"Kernel debugging" select "KGDB: kernel debugging with remote gdb". "Kernel debugging" select "KGDB: kernel debugging with remote gdb".
</para> </para>
<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 Next you should choose one of more I/O drivers to interconnect debugging
host and debugged target. Early boot debugging requires a KGDB host and debugged target. Early boot debugging requires a KGDB
I/O driver that supports early debugging and the driver must be I/O driver that supports early debugging and the driver must be

11
lib/Kconfig.kgdb
View File

@ -4,14 +4,17 @@ config HAVE_ARCH_KGDB
menuconfig KGDB menuconfig KGDB
bool "KGDB: kernel debugging with remote gdb" bool "KGDB: kernel debugging with remote gdb"
select FRAME_POINTER
depends on HAVE_ARCH_KGDB depends on HAVE_ARCH_KGDB
depends on DEBUG_KERNEL && EXPERIMENTAL depends on DEBUG_KERNEL && EXPERIMENTAL
help help
If you say Y here, it will be possible to remotely debug the If you say Y here, it will be possible to remotely debug the
kernel using gdb. Documentation of kernel debugger is available kernel using gdb. It is recommended but not required, that
at http://kgdb.sourceforge.net as well as in DocBook form you also turn on the kernel config option
in Documentation/DocBook/. If unsure, say N. 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 if KGDB