[patch 2/2] s390: fix compile with VIRT_CPU_ACCOUNTING=n.

[Martin Schwidefsky]

From: Jan Blunck <jblunck@xxxxxxx>

[patch 2/2] s390: fix compile with VIRT_CPU_ACCOUNTING=n.

When CONFIG_VIRT_CPU_ACCOUNTING is not defined compiling fails with an
undefined reference to account_vtime().

Signed-off-by: Jan Blunck <jblunck@xxxxxxx>
Signed-off-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
---

 include/asm-s390/system.h |    2 ++
 1 files changed, 2 insertions(+)

diff -urpN linux-2.6/include/asm-s390/system.h linux-2.6-patched/include/asm-s390/system.h
--- linux-2.6/include/asm-s390/system.h	2006-03-03 18:52:32.000000000 +0100
+++ linux-2.6-patched/include/asm-s390/system.h	2006-03-03 18:53:21.000000000 +0100
@@ -118,6 +118,8 @@ static inline void sched_cacheflush(void
 extern void account_vtime(struct task_struct *);
 extern void account_tick_vtime(struct task_struct *);
 extern void account_system_vtime(struct task_struct *);
+#else
+#define account_vtime(x) do { /* empty */ } while (0)
 #endif
 
 #define finish_arch_switch(prev) do {					     \
-
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