#ifdef CONFIG_SMP
#define smp_mb() mb()
#define smp_rmb() rmb()
-#define smp_wmb() __asm__ __volatile__ ("eieio" : : : "memory")
+#define smp_wmb() eieio()
#define smp_read_barrier_depends() read_barrier_depends()
#else
#define smp_mb() barrier()
extern void account_system_vtime(struct task_struct *);
#endif
+extern struct dentry *powerpc_debugfs_root;
+
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_SYSTEM_H */