From: Cedric Le Goater <clg@fr.ibm.com>

fix compile issue when stacktrace is not configured

Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 arch/s390/kernel/Makefile |    3 ++-
 1 files changed, 2 insertions(+), 1 deletion(-)

diff -puN arch/s390/kernel/Makefile~lockdep-stacktrace-subsystem-s390-support-fix arch/s390/kernel/Makefile
--- a/arch/s390/kernel/Makefile~lockdep-stacktrace-subsystem-s390-support-fix
+++ a/arch/s390/kernel/Makefile
@@ -4,7 +4,7 @@
 
 EXTRA_AFLAGS	:= -traditional
 
-obj-y	:=  bitmap.o traps.o time.o process.o stacktrace.o \
+obj-y	:=  bitmap.o traps.o time.o process.o \
             setup.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o \
             semaphore.o s390_ext.o debug.o profile.o irq.o reipl_diag.o
 
@@ -21,6 +21,7 @@ obj-$(CONFIG_COMPAT)		+= compat_linux.o 
 obj-$(CONFIG_BINFMT_ELF32)	+= binfmt_elf32.o
 
 obj-$(CONFIG_VIRT_TIMER)	+= vtime.o
+obj-$(CONFIG_STACKTRACE)	+= stacktrace.o
 
 # Kexec part
 S390_KEXEC_OBJS := machine_kexec.o crash.o
_