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 v5.6-rc6 next-20200316] [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-defer... base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git d441dceb5dce71150f28add80d36d91bbfccba99 config: nds32-defconfig (attached as .config) compiler: nds32le-linux-gcc (GCC) 9.2.0 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 GCC_VERSION=9.2.0 make.cross ARCH=nds32 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): kernel/time/timer.c: In function 'run_timer_softirq': 1804 | __run_timers(&timer_base_deferrable); | ^~~~~~~~~~~~~~~~~~~~~ kernel/time/timer.c:1804:18: note: each undeclared identifier is reported only once for each function it appears in kernel/time/timer.c: In function 'init_timer_deferrable_global': kernel/time/timer.c:2046:2: error: 'timer_base_deferrable' undeclared (first use in this function) 2046 | timer_base_deferrable.cpu = nr_cpu_ids; | ^~~~~~~~~~~~~~~~~~~~~ vim +/timer_base_deferrable +1804 kernel/time/timer.c 1791 1792 /* 1793 * This function runs timers and the timer-tq in bottom half context. 1794 */ 1795 static __latent_entropy void run_timer_softirq(struct softirq_action *h) 1796 { 1797 struct timer_base *base = this_cpu_ptr(&timer_bases[BASE_STD]); 1798 1799 __run_timers(base); 1800 if (IS_ENABLED(CONFIG_NO_HZ_COMMON)) { 1801 __run_timers(this_cpu_ptr(&timer_bases[BASE_DEF])); 1802 if (tick_do_timer_cpu == TICK_DO_TIMER_NONE || 1803 tick_do_timer_cpu == smp_processor_id()) 1805 } 1806 } 1807 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org