Hi "Joel, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on rcu/dev] [also build test WARNING on rcu/rcu/next linus/master v5.6-rc5 next-20200306] [cannot apply to linux/master] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Joel-Fernandes-Google/rcuperf-Add-ability-to-increase-object-allocation-size/20200306-110336 base: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev config: i386-randconfig-a001-20200308 (attached as .config) compiler: gcc-4.9 (Debian 4.9.2-10+deb8u1) 4.9.2 reproduce: # save the attached .config to linux build tree make ARCH=i386 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from include/linux/kernel.h:15:0, from kernel/rcu/rcuperf.c:13: kernel/rcu/rcuperf.c: In function 'kfree_perf_init': >> kernel/rcu/rcuperf.c:726:65: warning: format '%lu' expects argument of type 'long unsigned int', but argument 2 has type 'unsigned int' [-Wformat=] pr_alert("kfree object size=%lu\n", kfree_mult * sizeof(struct kfree_obj)); ^ include/linux/printk.h:300:35: note: in definition of macro 'pr_alert' printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__) ^ vim +726 kernel/rcu/rcuperf.c 708 709 static int __init 710 kfree_perf_init(void) 711 { 712 long i; 713 int firsterr = 0; 714 715 kfree_nrealthreads = compute_real(kfree_nthreads); 716 /* Start up the kthreads. */ 717 if (shutdown) { 718 init_waitqueue_head(&shutdown_wq); 719 firsterr = torture_create_kthread(kfree_perf_shutdown, NULL, 720 shutdown_task); 721 if (firsterr) 722 goto unwind; 723 schedule_timeout_uninterruptible(1); 724 } 725 > 726 pr_alert("kfree object size=%lu\n", kfree_mult * sizeof(struct kfree_obj)); 727 728 kfree_reader_tasks = kcalloc(kfree_nrealthreads, sizeof(kfree_reader_tasks[0]), 729 GFP_KERNEL); 730 if (kfree_reader_tasks == NULL) { 731 firsterr = -ENOMEM; 732 goto unwind; 733 } 734 735 for (i = 0; i < kfree_nrealthreads; i++) { 736 firsterr = torture_create_kthread(kfree_perf_thread, (void *)i, 737 kfree_reader_tasks[i]); 738 if (firsterr) 739 goto unwind; 740 } 741 742 while (atomic_read(&n_kfree_perf_thread_started) < kfree_nrealthreads) 743 schedule_timeout_uninterruptible(1); 744 745 torture_init_end(); 746 return 0; 747 748 unwind: 749 torture_init_end(); 750 kfree_perf_cleanup(); 751 return firsterr; 752 } 753 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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