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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-01 18:45:09 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-01 18:45:09 (GMT) |
commit | 31582b094d640fdab3fd29237b348a4c7c8646fb (patch) | |
tree | 52ee679e7dab9d6627d69d87470d62fef7a651d6 /Documentation/DocBook/kgdb.tmpl | |
parent | df1efe6f871e2d3f83e6ad7b7a1d2b728b478fc2 (diff) | |
parent | 25fc999913839a45cbb48ac7872e67f7521e7ed9 (diff) | |
download | linux-fsl-qoriq-31582b094d640fdab3fd29237b348a4c7c8646fb.tar.xz |
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb:
kgdb: fix gdb serial thread queries
kgdb: fix kgdb_validate_break_address to perform a mem write
kgdb: remove the requirement for CONFIG_FRAME_POINTER
Diffstat (limited to 'Documentation/DocBook/kgdb.tmpl')
-rw-r--r-- | Documentation/DocBook/kgdb.tmpl | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/DocBook/kgdb.tmpl b/Documentation/DocBook/kgdb.tmpl index e8acd1f..372dec2 100644 --- a/Documentation/DocBook/kgdb.tmpl +++ b/Documentation/DocBook/kgdb.tmpl @@ -98,6 +98,24 @@ "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> + If the architecture that you are using supports the kernel option + CONFIG_DEBUG_RODATA, you should consider turning it off. This + option will prevent the use of software breakpoints because it + marks certain regions of the kernel's memory space as read-only. + If kgdb supports it for the architecture you are using, you can + use hardware breakpoints if you desire to run with the + CONFIG_DEBUG_RODATA option turned on, else you need to turn off + this option. + </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 |