Hi Zhen,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v6.1-rc6]
[cannot apply to next-20221122]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Zhen-Lei/kallsyms-Add-self-test-facility/20221115-163650
patch link:    https://lore.kernel.org/r/20221115083349.1662-1-thunder.leizhen%40huawei.com
patch subject: [PATCH v9] kallsyms: Add self-test facility
config: x86_64-allyesconfig
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/2d938b2c6f7a6a515097ec18124ac23a6017ffaf
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Zhen-Lei/kallsyms-Add-self-test-facility/20221115-163650
        git checkout 2d938b2c6f7a6a515097ec18124ac23a6017ffaf
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   kernel/kallsyms_selftest.c: In function 'test_perf_kallsyms_on_each_match_symbol':
>> kernel/kallsyms_selftest.c:281:9: error: implicit declaration of function 'kallsyms_on_each_match_symbol'; did you mean 'kallsyms_on_each_symbol'? [-Werror=implicit-function-declaration]
     281 |         kallsyms_on_each_match_symbol(match_symbol, stat.name, &stat);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         |         kallsyms_on_each_symbol
   cc1: some warnings being treated as errors


vim +281 kernel/kallsyms_selftest.c

   269	
   270	static void test_perf_kallsyms_on_each_match_symbol(void)
   271	{
   272		u64 t0, t1;
   273		unsigned long flags;
   274		struct test_stat stat;
   275	
   276		memset(&stat, 0, sizeof(stat));
   277		stat.max = INT_MAX;
   278		stat.name = stub_name;
   279		local_irq_save(flags);
   280		t0 = sched_clock();
 > 281		kallsyms_on_each_match_symbol(match_symbol, stat.name, &stat);
   282		t1 = sched_clock();
   283		local_irq_restore(flags);
   284		pr_info("kallsyms_on_each_match_symbol() traverse all: %lld ns\n", t1 - t0);
   285	}
   286	

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