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Yet something to improve: [auto build test ERROR on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/Aneesh-Kumar-K-V/mm-demotion-Memory-tiers-and-demotion/20220720-110356 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything config: x86_64-randconfig-r004-20220718 (https://download.01.org/0day-ci/archive/20220721/202207211403.1K7X9mSi-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project dd5635541cd7bbd62cd59b6694dfb759b6e9a0d8) 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/d94a14b8fe93ff567d64b793ce1939698ca0b834 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Aneesh-Kumar-K-V/mm-demotion-Memory-tiers-and-demotion/20220720-110356 git checkout d94a14b8fe93ff567d64b793ce1939698ca0b834 # 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=x86_64 SHELL=/bin/bash drivers/acpi/nfit/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot All errors (new ones prefixed by >>): drivers/acpi/nfit/core.c:1719:13: warning: no previous prototype for function 'nfit_intel_shutdown_status' [-Wmissing-prototypes] __weak void nfit_intel_shutdown_status(struct nfit_mem *nfit_mem) ^ drivers/acpi/nfit/core.c:1719:8: note: declare 'static' if the function is not intended to be used outside of this translation unit __weak void nfit_intel_shutdown_status(struct nfit_mem *nfit_mem) ^ static >> drivers/acpi/nfit/core.c:3495:37: error: use of undeclared identifier 'MEMTIER_PERF_LEVEL_PMEM' node_devices[nid]->perf_level = MEMTIER_PERF_LEVEL_PMEM; ^ >> drivers/acpi/nfit/core.c:3551:41: error: use of undeclared identifier 'MEMTIER_HOTPLUG_PRIO' hotplug_memory_notifier(nfit_callback, MEMTIER_HOTPLUG_PRIO + 1); ^ 1 warning and 2 errors generated. vim +/MEMTIER_PERF_LEVEL_PMEM +3495 drivers/acpi/nfit/core.c 3474 3475 static int nfit_callback(struct notifier_block *self, 3476 unsigned long action, void *arg) 3477 { 3478 bool found = false; 3479 struct memory_notify *mnb = arg; 3480 int nid = mnb->status_change_nid; 3481 struct nfit_spa *nfit_spa; 3482 struct acpi_nfit_desc *acpi_desc; 3483 3484 if (nid == NUMA_NO_NODE || action != MEM_ONLINE) 3485 return NOTIFY_OK; 3486 3487 mutex_lock(&acpi_desc_lock); 3488 list_for_each_entry(acpi_desc, &acpi_descs, list) { 3489 mutex_lock(&acpi_desc->init_mutex); 3490 list_for_each_entry(nfit_spa, &acpi_desc->spas, list) { 3491 struct acpi_nfit_system_address *spa = nfit_spa->spa; 3492 int target_node = pxm_to_node(spa->proximity_domain); 3493 3494 if (target_node == nid) { > 3495 node_devices[nid]->perf_level = MEMTIER_PERF_LEVEL_PMEM; 3496 found = true; 3497 break; 3498 } 3499 } 3500 mutex_unlock(&acpi_desc->init_mutex); 3501 if (found) 3502 break; 3503 } 3504 mutex_unlock(&acpi_desc_lock); 3505 return NOTIFY_OK; 3506 } 3507 3508 static __init int nfit_init(void) 3509 { 3510 int ret; 3511 3512 BUILD_BUG_ON(sizeof(struct acpi_table_nfit) != 40); 3513 BUILD_BUG_ON(sizeof(struct acpi_nfit_system_address) != 64); 3514 BUILD_BUG_ON(sizeof(struct acpi_nfit_memory_map) != 48); 3515 BUILD_BUG_ON(sizeof(struct acpi_nfit_interleave) != 20); 3516 BUILD_BUG_ON(sizeof(struct acpi_nfit_smbios) != 9); 3517 BUILD_BUG_ON(sizeof(struct acpi_nfit_control_region) != 80); 3518 BUILD_BUG_ON(sizeof(struct acpi_nfit_data_region) != 40); 3519 BUILD_BUG_ON(sizeof(struct acpi_nfit_capabilities) != 16); 3520 3521 guid_parse(UUID_VOLATILE_MEMORY, &nfit_uuid[NFIT_SPA_VOLATILE]); 3522 guid_parse(UUID_PERSISTENT_MEMORY, &nfit_uuid[NFIT_SPA_PM]); 3523 guid_parse(UUID_CONTROL_REGION, &nfit_uuid[NFIT_SPA_DCR]); 3524 guid_parse(UUID_DATA_REGION, &nfit_uuid[NFIT_SPA_BDW]); 3525 guid_parse(UUID_VOLATILE_VIRTUAL_DISK, &nfit_uuid[NFIT_SPA_VDISK]); 3526 guid_parse(UUID_VOLATILE_VIRTUAL_CD, &nfit_uuid[NFIT_SPA_VCD]); 3527 guid_parse(UUID_PERSISTENT_VIRTUAL_DISK, &nfit_uuid[NFIT_SPA_PDISK]); 3528 guid_parse(UUID_PERSISTENT_VIRTUAL_CD, &nfit_uuid[NFIT_SPA_PCD]); 3529 guid_parse(UUID_NFIT_BUS, &nfit_uuid[NFIT_DEV_BUS]); 3530 guid_parse(UUID_NFIT_DIMM, &nfit_uuid[NFIT_DEV_DIMM]); 3531 guid_parse(UUID_NFIT_DIMM_N_HPE1, &nfit_uuid[NFIT_DEV_DIMM_N_HPE1]); 3532 guid_parse(UUID_NFIT_DIMM_N_HPE2, &nfit_uuid[NFIT_DEV_DIMM_N_HPE2]); 3533 guid_parse(UUID_NFIT_DIMM_N_MSFT, &nfit_uuid[NFIT_DEV_DIMM_N_MSFT]); 3534 guid_parse(UUID_NFIT_DIMM_N_HYPERV, &nfit_uuid[NFIT_DEV_DIMM_N_HYPERV]); 3535 guid_parse(UUID_INTEL_BUS, &nfit_uuid[NFIT_BUS_INTEL]); 3536 3537 nfit_wq = create_singlethread_workqueue("nfit"); 3538 if (!nfit_wq) 3539 return -ENOMEM; 3540 3541 nfit_mce_register(); 3542 ret = acpi_bus_register_driver(&acpi_nfit_driver); 3543 if (ret) { 3544 nfit_mce_unregister(); 3545 destroy_workqueue(nfit_wq); 3546 } 3547 /* 3548 * register a memory hotplug notifier at prio 2 so that we 3549 * can update the perf level for the node. 3550 */ > 3551 hotplug_memory_notifier(nfit_callback, MEMTIER_HOTPLUG_PRIO + 1); 3552 return ret; 3553 -- 0-DAY CI Kernel Test Service https://01.org/lkp