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-rw-r--r--arch/arm/Kconfig.debug23
1 files changed, 17 insertions, 6 deletions
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 192ee01a9ba2..a71fd941ade7 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -2,18 +2,29 @@ menu "Kernel hacking"
source "lib/Kconfig.debug"
-# RMK wants arm kernels compiled with frame pointers so hardwire this to y.
+# RMK wants arm kernels compiled with frame pointers or stack unwinding.
# If you know what you are doing and are willing to live without stack
# traces, you can get a slightly smaller kernel by setting this option to
# n, but then RMK will have to kill you ;).
config FRAME_POINTER
bool
- default y
+ default y if !ARM_UNWIND
help
If you say N here, the resulting kernel will be slightly smaller and
- faster. However, when a problem occurs with the kernel, the
- information that is reported is severely limited. Most people
- should say Y here.
+ faster. However, if neither FRAME_POINTER nor ARM_UNWIND are enabled,
+ when a problem occurs with the kernel, the information that is
+ reported is severely limited.
+
+config ARM_UNWIND
+ bool "Enable stack unwinding support"
+ depends on AEABI && EXPERIMENTAL
+ default y
+ help
+ This option enables stack unwinding support in the kernel
+ using the information automatically generated by the
+ compiler. The resulting kernel image is slightly bigger but
+ the performance is not affected. Currently, this feature
+ only works with EABI compilers. If unsure say Y.
config DEBUG_USER
bool "Verbose user fault messages"
@@ -66,7 +77,7 @@ config DEBUG_ICEDCC
Say Y here if you want the debug print routines to direct their
output to the EmbeddedICE macrocell's DCC channel using
co-processor 14. This is known to work on the ARM9 style ICE
- channel.
+ channel and on the XScale with the PEEDI.
It does include a timeout to ensure that the system does not
totally freeze when there is nothing connected to read.