The patch titled
lock validator: s390 CONFIG_FRAME_POINTER support
has been added to the -mm tree. Its filename is
lock-validator-s390-config_frame_pointer-support.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: lock validator: s390 CONFIG_FRAME_POINTER support
From: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
CONFIG_FRAME_POINTER support for s390.
Signed-off-by: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Acked-by: Ingo Molnar <mingo@xxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Arjan van de Ven <arjan@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/s390/Makefile | 5 +++++
lib/Kconfig.debug | 2 +-
2 files changed, 6 insertions(+), 1 deletion(-)
diff -puN arch/s390/Makefile~lock-validator-s390-config_frame_pointer-support arch/s390/Makefile
--- 25/arch/s390/Makefile~lock-validator-s390-config_frame_pointer-support Mon Jun 19 15:06:04 2006
+++ 25-akpm/arch/s390/Makefile Mon Jun 19 15:06:04 2006
@@ -38,6 +38,11 @@ cflags-$(CONFIG_MARCH_G5) += $(call cc
cflags-$(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 -puN lib/Kconfig.debug~lock-validator-s390-config_frame_pointer-support lib/Kconfig.debug
--- 25/lib/Kconfig.debug~lock-validator-s390-config_frame_pointer-support Mon Jun 19 15:06:04 2006
+++ 25-akpm/lib/Kconfig.debug Mon Jun 19 15:06:04 2006
@@ -463,7 +463,7 @@ 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
_
Patches currently in -mm which might be from heiko.carstens@xxxxxxxxxx are
git-klibc.patch
s390-move-var-declarations-behind-ifdef.patch
adjust-handle_irr_event-return-type.patch
add-__iowrite64_copy-s390-fix.patch
kthread-convert-s390machc-from-kernel_thread.patch
lock-validator-s390-stacktrace-interface.patch
lock-validator-s390-config_frame_pointer-support.patch
lock-validator-s390-rwsem-semaphore-changes.patch
lock-validator-early_init_irq_lock_type--console_init.patch
lock-validator-s390-irqtrace-support.patch
lock-validator-__local_bh_enable-_local_bh_enable.patch
lock-validator-s390-use-raw_spinlock-in-mcck-handler.patch
lock-validator-add-s390-to-supported-options.patch
-
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