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Commit cbbd1fa7 authored by Heiko Carstens's avatar Heiko Carstens Committed by Linus Torvalds
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[PATCH] lockdep: s390 CONFIG_FRAME_POINTER support 



CONFIG_FRAME_POINTER support for s390.

Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: default avatarIngo Molnar <mingo@elte.hu>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 8637c099

arch/s390/Makefile

+5 −0
Original line number Diff line number Diff line
@@ -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

lib/Kconfig.debug

+1 −1
Original line number Diff line number Diff line
@@ -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