1 files changed, 10 insertions, 0 deletions

diff --git a/include/asm-ppc/system.h b/include/asm-ppc/system.h
index b97037348277..fb49c0c49ea1 100644
--- a/include/asm-ppc/system.h
+++ b/include/asm-ppc/system.h
@@ -131,6 +131,16 @@ extern struct task_struct *__switch_to(struct task_struct *,
         struct task_struct *);
 #define switch_to(prev, next, last)     ((last) = __switch_to((prev), (next)))
 
+/*
+ * 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)
+{
+}
+
 struct thread_struct;
 extern struct task_struct *_switch(struct thread_struct *prev,
                                    struct thread_struct *next);