[rcu:tglx.2016.06.13a 50/57] kernel/time//timer.c:855:36: error: implicit declaration of function 'get_nohz_timer_target'

[rcu:tglx.2016.06.13a 50/57] kernel/time//timer.c:855:36: error: implicit declaration of function 'get_nohz_timer_target'

[kbuild test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git tglx.2016.06.13a
head:   a87abba5b3a063afbcaf04cded30209c7d27c126
commit: 8b235e333c6dcaa0bac02c5252b05753a9423b88 [50/57] timer: Switch to a non cascading wheel
config: i386-randconfig-x015-201624 (attached as .config)
compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430
reproduce:
        git checkout 8b235e333c6dcaa0bac02c5252b05753a9423b88
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   kernel/time//timer.c: In function 'get_target_base':
>> kernel/time//timer.c:855:36: error: implicit declaration of function 'get_nohz_timer_target' [-Werror=implicit-function-declaration]
     return get_timer_cpu_base(tflags, get_nohz_timer_target());
                                       ^~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/get_nohz_timer_target +855 kernel/time//timer.c

   849	static inline struct timer_base *get_target_base(struct timer_base *base,
   850							 unsigned tflags)
   851	{
   852	#ifdef CONFIG_NO_HZ_COMMON
   853		if ((tflags & TIMER_PINNED) || !base->migration_enabled)
   854			return get_timer_this_cpu_base(tflags);
 > 855		return get_timer_cpu_base(tflags, get_nohz_timer_target());
   856	#else
   857		return get_timer_this_cpu_base(tflags);
   858	#endif

---
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