Re: [PATCH v5] kernel/time: move timer sysctls to its own file

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Hi tangmeng,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tip/timers/core]
[also build test ERROR on linus/master kees/for-next/pstore v5.17-rc2 next-20220131]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/tangmeng/kernel-time-move-timer-sysctls-to-its-own-file/20220131-182433
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 35e13e9da9afbce13c1d36465504ece4e65f24fe
config: arc-randconfig-r043-20220131 (https://download.01.org/0day-ci/archive/20220201/202202012049.OHxc9ybu-lkp@xxxxxxxxx/config)
compiler: arc-elf-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/c54967d83b26ebacf4a1b686c6b659150b73306c
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review tangmeng/kernel-time-move-timer-sysctls-to-its-own-file/20220131-182433
        git checkout c54967d83b26ebacf4a1b686c6b659150b73306c
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash kernel/time/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

   kernel/time/timer.c: In function 'timer_sysctl_init':
>> kernel/time/timer.c:284:9: error: implicit declaration of function 'register_sysctl_init'; did you mean 'timer_sysctl_init'? [-Werror=implicit-function-declaration]
     284 |         register_sysctl_init("kernel", timer_sysctl);
         |         ^~~~~~~~~~~~~~~~~~~~
         |         timer_sysctl_init
   In file included from include/linux/perf_event.h:25,
                    from include/linux/trace_events.h:10,
                    from include/trace/syscall.h:7,
                    from include/linux/syscalls.h:88,
                    from kernel/time/timer.c:35:
   At top level:
   arch/arc/include/asm/perf_event.h:126:27: warning: 'arc_pmu_cache_map' defined but not used [-Wunused-const-variable=]
     126 | static const unsigned int arc_pmu_cache_map[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
         |                           ^~~~~~~~~~~~~~~~~
   arch/arc/include/asm/perf_event.h:91:27: warning: 'arc_pmu_ev_hw_map' defined but not used [-Wunused-const-variable=]
      91 | static const char * const arc_pmu_ev_hw_map[] = {
         |                           ^~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +284 kernel/time/timer.c

   281	
   282	static int __init timer_sysctl_init(void)
   283	{
 > 284		register_sysctl_init("kernel", timer_sysctl);
   285		return 0;
   286	}
   287	__initcall(timer_sysctl_init);
   288	#endif
   289	static inline bool is_timers_nohz_active(void)
   290	{
   291		return static_branch_unlikely(&timers_nohz_active);
   292	}
   293	#else
   294	static inline bool is_timers_nohz_active(void) { return false; }
   295	#endif /* NO_HZ_COMMON */
   296	

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



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