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McKenney" Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [paulmck-rcu:dev.2024.07.25a 15/43] kernel/rcu/rcuscale.c:1021:2: error: use of undeclared identifier 'writer_done' Message-ID: <202407300009.05X7YXZC-lkp@intel.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2024.07.25a head: 24e3bccdf4bc0ae57b0e89e0313fd4450fde12af commit: 54ff7b22b9062495092737217877be2bdd3dabd4 [15/43] rcuscale: Save a few lines with whitespace-only change config: x86_64-randconfig-071-20240728 (https://download.01.org/0day-ci/archive/20240730/202407300009.05X7YXZC-lkp@intel.com/config) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240730/202407300009.05X7YXZC-lkp@intel.com/reproduce) 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 | Closes: https://lore.kernel.org/oe-kbuild-all/202407300009.05X7YXZC-lkp@intel.com/ Note: the paulmck-rcu/dev.2024.07.25a HEAD 24e3bccdf4bc0ae57b0e89e0313fd4450fde12af builds fine. It only hurts bisectability. All errors (new ones prefixed by >>): >> kernel/rcu/rcuscale.c:1021:2: error: use of undeclared identifier 'writer_done' 1021 | writer_done = kcalloc(nrealwriters, sizeof(writer_done[0]), GFP_KERNEL); | ^ kernel/rcu/rcuscale.c:1021:45: error: use of undeclared identifier 'writer_done' 1021 | writer_done = kcalloc(nrealwriters, sizeof(writer_done[0]), GFP_KERNEL); | ^ kernel/rcu/rcuscale.c:1021:45: error: use of undeclared identifier 'writer_done' kernel/rcu/rcuscale.c:1022:68: error: use of undeclared identifier 'writer_done' 1022 | if (!writer_tasks || !writer_durations || !writer_n_durations || !writer_done) { | ^ 4 errors generated. vim +/writer_done +1021 kernel/rcu/rcuscale.c 946 947 static int __init 948 rcu_scale_init(void) 949 { 950 long i; 951 int firsterr = 0; 952 static struct rcu_scale_ops *scale_ops[] = { 953 &rcu_ops, &srcu_ops, &srcud_ops, TASKS_OPS TASKS_RUDE_OPS TASKS_TRACING_OPS 954 }; 955 956 if (!torture_init_begin(scale_type, verbose)) 957 return -EBUSY; 958 959 /* Process args and announce that the scalability'er is on the job. */ 960 for (i = 0; i < ARRAY_SIZE(scale_ops); i++) { 961 cur_ops = scale_ops[i]; 962 if (strcmp(scale_type, cur_ops->name) == 0) 963 break; 964 } 965 if (i == ARRAY_SIZE(scale_ops)) { 966 pr_alert("rcu-scale: invalid scale type: \"%s\"\n", scale_type); 967 pr_alert("rcu-scale types:"); 968 for (i = 0; i < ARRAY_SIZE(scale_ops); i++) 969 pr_cont(" %s", scale_ops[i]->name); 970 pr_cont("\n"); 971 firsterr = -EINVAL; 972 cur_ops = NULL; 973 goto unwind; 974 } 975 if (cur_ops->init) 976 cur_ops->init(); 977 978 if (cur_ops->rso_gp_kthread) { 979 kthread_tp = cur_ops->rso_gp_kthread(); 980 if (kthread_tp) 981 kthread_stime = kthread_tp->stime; 982 } 983 if (kfree_rcu_test) 984 return kfree_scale_init(); 985 986 nrealwriters = compute_real(nwriters); 987 nrealreaders = compute_real(nreaders); 988 atomic_set(&n_rcu_scale_reader_started, 0); 989 atomic_set(&n_rcu_scale_writer_started, 0); 990 atomic_set(&n_rcu_scale_writer_finished, 0); 991 rcu_scale_print_module_parms(cur_ops, "Start of test"); 992 993 /* Start up the kthreads. */ 994 995 if (shutdown) { 996 init_waitqueue_head(&shutdown_wq); 997 firsterr = torture_create_kthread(rcu_scale_shutdown, NULL, 998 shutdown_task); 999 if (torture_init_error(firsterr)) 1000 goto unwind; 1001 schedule_timeout_uninterruptible(1); 1002 } 1003 reader_tasks = kcalloc(nrealreaders, sizeof(reader_tasks[0]), 1004 GFP_KERNEL); 1005 if (reader_tasks == NULL) { 1006 SCALEOUT_ERRSTRING("out of memory"); 1007 firsterr = -ENOMEM; 1008 goto unwind; 1009 } 1010 for (i = 0; i < nrealreaders; i++) { 1011 firsterr = torture_create_kthread(rcu_scale_reader, (void *)i, 1012 reader_tasks[i]); 1013 if (torture_init_error(firsterr)) 1014 goto unwind; 1015 } 1016 while (atomic_read(&n_rcu_scale_reader_started) < nrealreaders) 1017 schedule_timeout_uninterruptible(1); 1018 writer_tasks = kcalloc(nrealwriters, sizeof(writer_tasks[0]), GFP_KERNEL); 1019 writer_durations = kcalloc(nrealwriters, sizeof(*writer_durations), GFP_KERNEL); 1020 writer_n_durations = kcalloc(nrealwriters, sizeof(*writer_n_durations), GFP_KERNEL); > 1021 writer_done = kcalloc(nrealwriters, sizeof(writer_done[0]), GFP_KERNEL); 1022 if (!writer_tasks || !writer_durations || !writer_n_durations || !writer_done) { 1023 SCALEOUT_ERRSTRING("out of memory"); 1024 firsterr = -ENOMEM; 1025 goto unwind; 1026 } 1027 for (i = 0; i < nrealwriters; i++) { 1028 writer_durations[i] = 1029 kcalloc(MAX_MEAS, sizeof(*writer_durations[i]), 1030 GFP_KERNEL); 1031 if (!writer_durations[i]) { 1032 firsterr = -ENOMEM; 1033 goto unwind; 1034 } 1035 firsterr = torture_create_kthread(rcu_scale_writer, (void *)i, 1036 writer_tasks[i]); 1037 if (torture_init_error(firsterr)) 1038 goto unwind; 1039 } 1040 torture_init_end(); 1041 return 0; 1042 1043 unwind: 1044 torture_init_end(); 1045 rcu_scale_cleanup(); 1046 if (shutdown) { 1047 WARN_ON(!IS_MODULE(CONFIG_RCU_SCALE_TEST)); 1048 kernel_power_off(); 1049 } 1050 return firsterr; 1051 } 1052 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki