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Message-ID: <202407290602.bOPrV24o-lkp@intel.com>
Date: Mon, 29 Jul 2024 06:41:15 +0800
From: kernel test robot <lkp@...el.com>
To: "Paul E. McKenney" <paulmck@...nel.org>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: [paulmck-rcu:dev.2024.07.25a 15/43] kernel/rcu/rcuscale.c:1021:9:
error: 'writer_done' undeclared
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-161-20240728 (https://download.01.org/0day-ci/archive/20240729/202407290602.bOPrV24o-lkp@intel.com/config)
compiler: gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240729/202407290602.bOPrV24o-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 <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202407290602.bOPrV24o-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: In function 'rcu_scale_init':
>> kernel/rcu/rcuscale.c:1021:9: error: 'writer_done' undeclared (first use in this function)
1021 | writer_done = kcalloc(nrealwriters, sizeof(writer_done[0]), GFP_KERNEL);
| ^~~~~~~~~~~
kernel/rcu/rcuscale.c:1021:9: note: each undeclared identifier is reported only once for each function it appears in
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
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