The patch titled
lockdep: s390 CONFIG_FRAME_POINTER support
has been removed from the -mm tree. Its filename is
lockdep-s390-config_frame_pointer-support.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: lockdep: 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~lockdep-s390-config_frame_pointer-support arch/s390/Makefile
--- a/arch/s390/Makefile~lockdep-s390-config_frame_pointer-support
+++ a/arch/s390/Makefile
@@ -34,6 +34,11 @@ 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~lockdep-s390-config_frame_pointer-support lib/Kconfig.debug
--- a/lib/Kconfig.debug~lockdep-s390-config_frame_pointer-support
+++ a/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
_
Patches currently in -mm which might be from heiko.carstens@xxxxxxxxxx are
origin.patch
zfcp-fix-incorrect-usage-of-erp_lock.patch
zfcp-fix-incorrect-usage-of-fsf_req_list_lock.patch
git-klibc.patch
s390-move-var-declarations-behind-ifdef.patch
fix-oddball-boolean-logic-in-s390-netiucv.patch
s390-broken-null-test-in-claw-driver.patch
-
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