--- arch/powerpc/include/asm/system.h

+++ arch/powerpc/include/asm/system.h

@@ -540,10 +540,6 @@ extern void reloc_got2(unsigned long);

#define PTRRELOC(x) ((typeof(x)) add_reloc_offset((unsigned long)(x)))

-#ifdef CONFIG_VIRT_CPU_ACCOUNTING

-extern void account_system_vtime(struct task_struct *);

-#endif

-

extern struct dentry *powerpc_debugfs_root;

#endif /* __KERNEL__ */