[jimc:dd-drm-next 8/8] lib/dynamic_debug.c:1224:5: warning: no previous prototype for 'dyndbg_register_aux_print'

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

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tree:   https://github.com/jimc/linux.git dd-drm-next
head:   a2a11ed64801a9198e5009b5c9339f4221105a36
commit: a2a11ed64801a9198e5009b5c9339f4221105a36 [8/8] dyndbg: add special aux_print framework
config: nds32-randconfig-s032-20210804 (attached as .config)
compiler: nds32le-linux-gcc (GCC) 10.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.3-348-gf0e6938b-dirty
        # https://github.com/jimc/linux/commit/a2a11ed64801a9198e5009b5c9339f4221105a36
        git remote add jimc https://github.com/jimc/linux.git
        git fetch --no-tags jimc dd-drm-next
        git checkout a2a11ed64801a9198e5009b5c9339f4221105a36
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=nds32 

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

All warnings (new ones prefixed by >>):

   lib/dynamic_debug.c: In function 'param_set_dyndbg':
   lib/dynamic_debug.c:1201:52: error: invalid use of undefined type 'struct module'
    1201 |   chgct = dynamic_debug_exec_queries(query, kp->mod->name);
         |                                                    ^~
   lib/dynamic_debug.c: At top level:
>> lib/dynamic_debug.c:1224:5: warning: no previous prototype for 'dyndbg_register_aux_print' [-Wmissing-prototypes]
    1224 | int dyndbg_register_aux_print(char *query,
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~
>> lib/dynamic_debug.c:1230:5: warning: no previous prototype for 'dyndbg_unregister_aux_print' [-Wmissing-prototypes]
    1230 | int dyndbg_unregister_aux_print(char *query)
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/dyndbg_register_aux_print +1224 lib/dynamic_debug.c

  1181	
  1182	int param_set_dyndbg(const char *instr, const struct kernel_param *kp)
  1183	{
  1184		unsigned long inbits;
  1185		int rc, i, chgct = 0, totct = 0;
  1186		char query[OUR_QUERY_SIZE];
  1187		struct dyndbg_bitdesc *bitmap = (struct dyndbg_bitdesc *) kp->data;
  1188	
  1189		rc = kstrtoul(instr, 0, &inbits);
  1190		if (rc) {
  1191			pr_err("set_dyndbg: failed\n");
  1192			return -EINVAL;
  1193		}
  1194		vpr_info("set_dyndbg: input 0x%lx\n", inbits);
  1195	
  1196		for (i = 0; !!bitmap[i].prefix; i++) {
  1197	
  1198			sprintf(query, "format '^%s' %cp", bitmap[i].prefix,
  1199				test_bit(i, &inbits) ? '+' : '-');
  1200	
> 1201			chgct = dynamic_debug_exec_queries(query, kp->mod->name);
  1202	
  1203			v2pr_info("bit-%d: %d changes by '%s'\n", i, chgct, query);
  1204			totct += chgct;
  1205		}
  1206		vpr_info("total changes: %d\n", totct);
  1207		return 0;
  1208	}
  1209	EXPORT_SYMBOL(param_set_dyndbg);
  1210	
  1211	int param_get_dyndbg(char *buffer, const struct kernel_param *kp)
  1212	{
  1213		return scnprintf(buffer, PAGE_SIZE, "%u\n",
  1214				 *((unsigned int *)kp->arg));
  1215	}
  1216	EXPORT_SYMBOL(param_get_dyndbg);
  1217	
  1218	const struct kernel_param_ops param_ops_dyndbg = {
  1219		.set = param_set_dyndbg,
  1220		.get = param_get_dyndbg,
  1221	};
  1222	EXPORT_SYMBOL(param_ops_dyndbg);
  1223	
> 1224	int dyndbg_register_aux_print(char *query,
  1225				      int (*aux_print)(const char *fmt, char *prefix,
  1226						       char *label, void *))
  1227	{
  1228		return 0;
  1229	}
> 1230	int dyndbg_unregister_aux_print(char *query)

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

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