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-rw-r--r--include/asm-s390/system.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/asm-s390/system.h b/include/asm-s390/system.h
index 864cae7e1fd..c7c3a9ad593 100644
--- a/include/asm-s390/system.h
+++ b/include/asm-s390/system.h
@@ -104,6 +104,16 @@ static inline void restore_access_regs(unsigned int *acrs)
prev = __switch_to(prev,next); \
} while (0)
+/*
+ * On SMP systems, when the scheduler does migration-cost autodetection,
+ * it needs a way to flush as much of the CPU's caches as possible.
+ *
+ * TODO: fill this in!
+ */
+static inline void sched_cacheflush(void)
+{
+}
+
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
extern void account_user_vtime(struct task_struct *);
extern void account_system_vtime(struct task_struct *);