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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2006-07-03 11:24:38 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-04 02:27:02 +0400 |
| commit | cbbd1fa72d22896332301ca7e6b7164284be105c (patch) | |
| tree | a041ce22738c56b189aa1251ccc7e232385bb4a1 | |
| parent | 8637c09901049f061b94f684915d4f18ecf91d79 (diff) | |
| download | linux-cbbd1fa72d22896332301ca7e6b7164284be105c.tar.xz | |
[PATCH] lockdep: s390 CONFIG_FRAME_POINTER support
CONFIG_FRAME_POINTER support for s390.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | arch/s390/Makefile | 5 | ||||
| -rw-r--r-- | lib/Kconfig.debug | 2 |
2 files changed, 6 insertions, 1 deletions
diff --git a/arch/s390/Makefile b/arch/s390/Makefile index b3791fb094a8..74ef57dcfa60 100644 --- a/arch/s390/Makefile +++ b/arch/s390/Makefile @@ -34,6 +34,11 @@ cflags-$(CONFIG_MARCH_G5) += $(call cc-option,-march=g5) cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900) cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990) +# +# Prevent tail-call optimizations, to get clearer backtraces: +# +cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls + # old style option for packed stacks ifeq ($(call cc-option-yn,-mkernel-backchain),y) cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 04e374c6fd46..91e338a3d069 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -208,7 +208,7 @@ config DEBUG_VM config FRAME_POINTER bool "Compile the kernel with frame pointers" - depends on DEBUG_KERNEL && (X86 || CRIS || M68K || M68KNOMMU || FRV || UML) + depends on DEBUG_KERNEL && (X86 || CRIS || M68K || M68KNOMMU || FRV || UML || S390) default y if DEBUG_INFO && UML help If you say Y here the resulting kernel image will be slightly larger |