[PATCH] unify pfn_to_page: parisc pfn_to_page

[powerpc.git] / include / asm-ppc / system.h

diff --git a/include/asm-ppc/system.h b/include/asm-ppc/system.h
index b970373..fb49c0c 100644 (file)
--- 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);