cputime: Generalize CONFIG_VIRT_CPU_ACCOUNTING

S390, ia64 and powerpc all define their own version
of CONFIG_VIRT_CPU_ACCOUNTING. Generalize the config
and its description to a single place to avoid
duplication.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>

1 files changed, 2 insertions, 3 deletions

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 76de6b68487c..49ebfb62c86a 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -49,9 +49,6 @@ config GENERIC_LOCKBREAK
 config PGSTE
         def_bool y if KVM
 
-config VIRT_CPU_ACCOUNTING
-        def_bool y
-
 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
         def_bool y
 
@@ -89,6 +86,8 @@ config S390
         select HAVE_MEMBLOCK
         select HAVE_MEMBLOCK_NODE_MAP
         select HAVE_CMPXCHG_LOCAL
+        select HAVE_VIRT_CPU_ACCOUNTING
+        select VIRT_CPU_ACCOUNTING
         select ARCH_DISCARD_MEMBLOCK
         select BUILDTIME_EXTABLE_SORT
         select ARCH_INLINE_SPIN_TRYLOCK