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-rw-r--r--include/linux/hardirq.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/hardirq.h b/include/linux/hardirq.h
index e37a77cbd58..41367c5c3c6 100644
--- a/include/linux/hardirq.h
+++ b/include/linux/hardirq.h
@@ -141,6 +141,8 @@ struct task_struct;
static inline void account_system_vtime(struct task_struct *tsk)
{
}
+#else
+extern void account_system_vtime(struct task_struct *tsk);
#endif
#if defined(CONFIG_NO_HZ)