Re: [PATCH v3 1/2] timer: make deferrable cpu unbound timers really not bound to a cpu

[kbuild test robot <lkp@intel.com>]

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Hi Prasad,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tip/timers/core]
[also build test ERROR on tip/auto-latest tip/timers/nohz v5.7-rc4 next-20200501]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Prasad-Sodagudi/timer-make-deferrable-cpu-unbound-timers-really-not-bound-to-a-cpu/20200503-025049
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 4479730e9263befbb9ce9563a09563db2acb8f7c
config: riscv-nommu_virt_defconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=riscv 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   kernel/time/timer.c: In function 'get_timer_cpu_base':
>> kernel/time/timer.c:847:11: error: 'timer_base_deferrable' undeclared (first use in this function)
     847 |   base = &timer_base_deferrable;
         |           ^~~~~~~~~~~~~~~~~~~~~
   kernel/time/timer.c:847:11: note: each undeclared identifier is reported only once for each function it appears in
   kernel/time/timer.c: In function 'get_timer_this_cpu_base':
   kernel/time/timer.c:866:11: error: 'timer_base_deferrable' undeclared (first use in this function)
     866 |   base = &timer_base_deferrable;
         |           ^~~~~~~~~~~~~~~~~~~~~
   kernel/time/timer.c: In function 'run_timer_softirq':
   kernel/time/timer.c:1805:18: error: 'timer_base_deferrable' undeclared (first use in this function)
    1805 |    __run_timers(&timer_base_deferrable);
         |                  ^~~~~~~~~~~~~~~~~~~~~

vim +/timer_base_deferrable +847 kernel/time/timer.c

   836	
   837	static inline struct timer_base *get_timer_cpu_base(u32 tflags, u32 cpu)
   838	{
   839		struct timer_base *base = per_cpu_ptr(&timer_bases[BASE_STD], cpu);
   840	
   841		/*
   842		 * If the timer is deferrable and NO_HZ_COMMON is set then we need
   843		 * to use the deferrable base.
   844		 */
   845		if (IS_ENABLED(CONFIG_NO_HZ_COMMON) && (tflags & TIMER_DEFERRABLE)) {
   846	#ifdef CONFIG_SMP
 > 847			base = &timer_base_deferrable;
   848	#endif
   849			if (tflags & TIMER_PINNED)
   850				base = per_cpu_ptr(&timer_bases[BASE_DEF], cpu);
   851		}
   852	
   853		return base;
   854	}
   855	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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