tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 5930fa3740c518a9f6ba688fd0c1873d6f3adbce commit: 1ab6383ee94e788fe424d7eac10dc8ec3bfa6828 [3508/3508] ACPI / PPTT: Provide a helper to walk processor containers config: arm64-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20251211/202512111416.5evNsB79-lkp@i...) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 4125e73cdc6188cca4c1c72b72e2b2d85c157483) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251211/202512111416.5evNsB79-lkp@i...) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512111416.5evNsB79-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from <built-in>:3: In file included from ././include/linux/compiler_types.h:150: ./include/linux/compiler-clang.h:33:9: warning: '__SANITIZE_ADDRESS__' macro redefined [-Wmacro-redefined] 33 | #define __SANITIZE_ADDRESS__ | ^ <built-in>:367:9: note: previous definition is here 367 | #define __SANITIZE_ADDRESS__ 1 | ^ In file included from drivers/acpi/pptt.c:20: In file included from ./include/linux/acpi.h:37: In file included from ./include/acpi/acpi_io.h:7: In file included from ./arch/arm64/include/asm/acpi.h:14: In file included from ./include/linux/memblock.h:12: In file included from ./include/linux/mm.h:2181: ./include/linux/vmstat.h:508:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 508 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 509 | item]; | ~~~~ ./include/linux/vmstat.h:515:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 515 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 516 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ ./include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ ./include/linux/vmstat.h:527:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 527 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 528 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ ./include/linux/vmstat.h:536:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 536 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 537 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~

...

drivers/acpi/pptt.c:309:5: warning: no previous prototype for function 'acpi_pptt_for_each_container' [-Wmissing-prototypes] 309 | int acpi_pptt_for_each_container(acpi_pptt_cpu_callback_t callback, void *arg) | ^ drivers/acpi/pptt.c:309:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 309 | int acpi_pptt_for_each_container(acpi_pptt_cpu_callback_t callback, void *arg) | ^ | static 7 warnings generated. -- drivers/acpi/pptt.c:310: warning: Function parameter or member 'callback' not described in 'acpi_pptt_for_each_container' drivers/acpi/pptt.c:310: warning: Function parameter or member 'arg' not described in 'acpi_pptt_for_each_container'

vim +/acpi_pptt_for_each_container +309 drivers/acpi/pptt.c 297 298 /** 299 * acpi_pptt_for_each_container() - Iterate over all processor containers 300 * 301 * Not all 'Processor' entries in the PPTT are either a CPU or a Processor 302 * Container, they may exist purely to describe a Private resource. CPUs 303 * have to be leaves, so a Processor Container is a non-leaf that has the 304 * 'ACPI Processor ID valid' flag set. 305 * 306 * Return: 0 for a complete walk, or the first non-zero value from the callback 307 * that stopped the walk. 308 */

309 int acpi_pptt_for_each_container(acpi_pptt_cpu_callback_t callback, void *arg) 310 { 311 struct acpi_pptt_processor *cpu_node; 312 struct acpi_table_header *table_hdr; 313 struct acpi_subtable_header *entry; 314 bool leaf_flag, has_leaf_flag = false; 315 unsigned long table_end; 316 acpi_status status; 317 u32 proc_sz; 318 int ret = 0; 319 320 status = acpi_get_table(ACPI_SIG_PPTT, 0, &table_hdr); 321 if (ACPI_FAILURE(status)) 322 return 0; 323 324 if (table_hdr->revision > 1) 325 has_leaf_flag = true; 326 327 table_end = (unsigned long)table_hdr + table_hdr->length; 328 entry = ACPI_ADD_PTR(struct acpi_subtable_header, table_hdr, 329 sizeof(struct acpi_table_pptt)); 330 proc_sz = sizeof(struct acpi_pptt_processor); 331 while ((unsigned long)entry + proc_sz < table_end) { 332 cpu_node = (struct acpi_pptt_processor *)entry; 333 if (entry->type == ACPI_PPTT_TYPE_PROCESSOR && 334 cpu_node->flags & ACPI_PPTT_ACPI_PROCESSOR_ID_VALID) 335 { 336 leaf_flag = cpu_node->flags & ACPI_PPTT_ACPI_LEAF_NODE; 337 if ((has_leaf_flag && !leaf_flag) || 338 (!has_leaf_flag && !acpi_pptt_leaf_node(table_hdr, cpu_node))) 339 { 340 ret = callback(cpu_node, arg); 341 if (ret) 342 break; 343 } 344 } 345 entry = ACPI_ADD_PTR(struct acpi_subtable_header, entry, 346 entry->length); 347 } 348 349 acpi_put_table(table_hdr); 350 351 return ret; 352 } 353

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