Hi Zeng, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: cd9eb9b4365b71652b2c2ac58293bea47c9f9302 commit: 12f136b2134d4ded731c3ef23ac08c85b9c0b1fa [3541/3541] cpufreq: CPPC: Keep the target core awake when reading its cpufreq rate config: arm64-randconfig-002-20251212 (https://download.01.org/0day-ci/archive/20251212/202512122204.MoIXLFAZ-lkp@i...) compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251212/202512122204.MoIXLFAZ-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/202512122204.MoIXLFAZ-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from drivers/cpufreq/cppc_cpufreq.c:28: In file included from include/acpi/cppc_acpi.h:13: 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: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_" | ~~~~~~~~~~~ ^ ~~~
drivers/cpufreq/cppc_cpufreq.c:852:19: error: incomplete definition of type 'struct fb_ctr_pair' 852 | int cpu = fb_ctrs->cpu; | ~~~~~~~^ drivers/cpufreq/cppc_cpufreq.c:851:9: note: forward declaration of 'struct fb_ctr_pair' 851 | struct fb_ctr_pair *fb_ctrs = val; | ^ drivers/cpufreq/cppc_cpufreq.c:855:40: error: incomplete definition of type 'struct fb_ctr_pair' 855 | ret = cppc_get_perf_ctrs(cpu, &fb_ctrs->fb_ctrs_t0); | ~~~~~~~^ drivers/cpufreq/cppc_cpufreq.c:851:9: note: forward declaration of 'struct fb_ctr_pair' 851 | struct fb_ctr_pair *fb_ctrs = val; | ^ drivers/cpufreq/cppc_cpufreq.c:861:41: error: incomplete definition of type 'struct fb_ctr_pair' 861 | return cppc_get_perf_ctrs(cpu, &fb_ctrs->fb_ctrs_t1); | ~~~~~~~^ drivers/cpufreq/cppc_cpufreq.c:851:9: note: forward declaration of 'struct fb_ctr_pair' 851 | struct fb_ctr_pair *fb_ctrs = val; | ^ drivers/cpufreq/cppc_cpufreq.c:866:21: error: variable has incomplete type 'struct fb_ctr_pair' 866 | struct fb_ctr_pair fb_ctrs = { .cpu = cpu, }; | ^ drivers/cpufreq/cppc_cpufreq.c:866:9: note: forward declaration of 'struct fb_ctr_pair' 866 | struct fb_ctr_pair fb_ctrs = { .cpu = cpu, }; | ^ 1 warning and 4 errors generated.
vim +852 drivers/cpufreq/cppc_cpufreq.c 848 849 static int cppc_get_perf_ctrs_pair(void *val) 850 { 851 struct fb_ctr_pair *fb_ctrs = val;
852 int cpu = fb_ctrs->cpu; 853 int ret; 854 855 ret = cppc_get_perf_ctrs(cpu, &fb_ctrs->fb_ctrs_t0); 856 if (ret) 857 return ret; 858 859 udelay(2); /* 2usec delay between sampling */ 860 861 return cppc_get_perf_ctrs(cpu, &fb_ctrs->fb_ctrs_t1); 862 } 863
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