[S390] define KTIME_SCALAR for 32-bit s390

32-bit s390 has efficient support for 64/32-bit conversions, define
KTIME_SCALAR to enable the use of the plain scalar nanosecond based
representation of ktime.

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

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index f46a1b5..2ae5d72 100644 (file)
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -121,6 +121,9 @@ config 32BIT
        bool
        default y if !64BIT
 
+config KTIME_SCALAR
+       def_bool 32BIT
+
 config SMP
        bool "Symmetric multi-processing support"
        ---help---