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: hexagon-randconfig-r013-20221120
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project af8c49dc1ec44339d915d988ffe0f38da68ca0e7)
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/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
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon 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:281:2: error: call to undeclared function 'kallsyms_on_each_match_symbol'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           kallsyms_on_each_match_symbol(match_symbol, stat.name, &stat);
           ^
   kernel/kallsyms_selftest.c:281:2: note: did you mean 'kallsyms_on_each_symbol'?
   include/linux/kallsyms.h:70:5: note: 'kallsyms_on_each_symbol' declared here
   int kallsyms_on_each_symbol(int (*fn)(void *, const char *, struct module *,
       ^
   kernel/kallsyms_selftest.c:331:3: error: call to undeclared function 'kallsyms_on_each_match_symbol'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
                   kallsyms_on_each_match_symbol(match_symbol, test_items[i].name, stat);
                   ^
   kernel/kallsyms_selftest.c:381:3: error: call to undeclared function 'kallsyms_on_each_match_symbol'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
                   kallsyms_on_each_match_symbol(match_symbol, namebuf, stat);
                   ^
   3 errors generated.


vim +/kallsyms_on_each_match_symbol +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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https://01.org/lkp