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| author | Catalin Marinas <catalin.marinas@arm.com> | 2009-02-12 13:56:34 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-02-19 11:30:18 +0000 |
| commit | adf8b37bafc1495393201a2ae4235846371870d0 (patch) | |
| tree | b1f8a3df5ec6c94b1a90fecc28894a1d6241163d /arch/arm/Kconfig.debug | |
| parent | c4c5716e16c4ee971dec446a7e4801fbb8a1066b (diff) | |
| download | linux-adf8b37bafc1495393201a2ae4235846371870d0.tar.gz linux-adf8b37bafc1495393201a2ae4235846371870d0.tar.bz2 linux-adf8b37bafc1495393201a2ae4235846371870d0.zip | |
[ARM] 5386/2: unwind: Add Makefile and Kconfig entries for ARM stack unwinding
This patch also makes the frame pointer default to y only if
!ARM_UNWIND. LOCKDEP no longer selects FRAME_POINTER if ARM_UNWIND is
enabled.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/Kconfig.debug')
| -rw-r--r-- | arch/arm/Kconfig.debug | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 192ee01a9ba2..35f8db35f442 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" |