[S390] Define GENERIC_LOCKBREAK.

Fix compile error:

  CC      arch/s390/kernel/asm-offsets.s
In file included from
arch/s390/kernel/asm-offsets.c:7:
include/linux/sched.h: In function 'spin_needbreak':
include/linux/sched.h:1931: error: implicit declaration of function '__raw_spin_is_contended'
make[2]: *** [arch/s390/kernel/asm-offsets.s] Error 1

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 82cbffd03654..f0e7ccf1b206 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -47,6 +47,11 @@ config NO_IOMEM
 config NO_DMA
         def_bool y
 
+config GENERIC_LOCKBREAK
+        bool
+        default y
+        depends on SMP && PREEMPT
+
 mainmenu "Linux Kernel Configuration"
 
 config S390