diff options
| author | Jan Beulich <jbeulich@novell.com> | 2006-03-24 03:16:19 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-24 07:33:25 -0800 |
| commit | 604bf5a216e7f2d97cdf62614ca1281921531040 (patch) | |
| tree | 3510302f5ff0ae04940eb79b67cffe6dee561908 | |
| parent | ab7efcc97ebc92e03c0474dfd38f9c7b84b84115 (diff) | |
[PATCH] CONFIG_UNWIND_INFO
As a foundation for reliable stack unwinding, this adds a config option
(available to all architectures except IA64 and those where the module
loader might have problems with the resulting relocations) to enable the
generation of frame unwind information.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Paul Mundt <lethal@linux-sh.org>,
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | Makefile | 4 | ||||
| -rw-r--r-- | lib/Kconfig.debug | 11 |
2 files changed, 15 insertions, 0 deletions
@@ -517,6 +517,10 @@ else CFLAGS += -fomit-frame-pointer endif +ifdef CONFIG_UNWIND_INFO +CFLAGS += -fasynchronous-unwind-tables +endif + ifdef CONFIG_DEBUG_INFO CFLAGS += -g endif diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index a314e663d51..f2618e1c2b9 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -195,6 +195,17 @@ config FRAME_POINTER some architectures or if you use external debuggers. If you don't debug the kernel, you can say N. +config UNWIND_INFO + bool "Compile the kernel with frame unwind information" + depends on !IA64 + depends on !MODULES || !(MIPS || PARISC || PPC || SUPERH || SPARC64 || V850) + default DEBUG_KERNEL + help + If you say Y here the resulting kernel image will be slightly larger + but not slower, and it will give very useful debugging information. + If you don't debug the kernel, you can say N, but we may not be able + to solve problems without frame unwind information or frame pointers. + config FORCED_INLINING bool "Force gcc to inline functions marked 'inline'" depends on DEBUG_KERNEL |