[PATCH] sched: add cacheflush() asm

[firefly-linux-kernel-4.4.55.git] / include / asm-powerpc / system.h

diff --git a/include/asm-powerpc/system.h b/include/asm-powerpc/system.h
index 0c58e32a9570525ec4a2f036413d4cabfa69c10d..1be629b4fb97bfaa23fa95867bb483366109ee7e 100644 (file)
--- a/include/asm-powerpc/system.h
+++ b/include/asm-powerpc/system.h
@@ -175,6 +175,16 @@ struct thread_struct;
 extern struct task_struct *_switch(struct thread_struct *prev,
                                   struct thread_struct *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)
+{
+}
+
 extern unsigned int rtas_data;
 extern int mem_init_done;      /* set on boot once kmalloc can be called */
 extern unsigned long memory_limit;