Hi Nicholas, [auto build test ERROR on linus/master] [also build test ERROR on v4.12-rc2 next-20170525] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Nicholas-Piggin/watchdog-remove-unused-declaration/20170525-164255 config: ia64-allmodconfig (attached as .config) compiler: ia64-linux-gcc (GCC) 6.2.0 reproduce: wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=ia64 All error/warnings (new ones prefixed by >>): kernel/watchdog_hld.c: In function 'watchdog_overflow_callback': >> kernel/watchdog_hld.c:54:7: error: 'struct perf_event' has no member named >> 'hw' event->hw.interrupts = 0; ^~ kernel/watchdog_hld.c: In function 'watchdog_nmi_enable': >> kernel/watchdog_hld.c:123:20: error: 'struct perf_event' has no member named >> 'state' if (event && event->state > PERF_EVENT_STATE_OFF) ^~ >> kernel/watchdog_hld.c:137:10: error: implicit declaration of function >> 'perf_event_create_kernel_counter' [-Werror=implicit-function-declaration] event = perf_event_create_kernel_counter(wd_attr, cpu, NULL, watchdog_overflow_callback, NULL); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> kernel/watchdog_hld.c:137:8: warning: assignment makes pointer from integer >> without a cast [-Wint-conversion] event = perf_event_create_kernel_counter(wd_attr, cpu, NULL, watchdog_overflow_callback, NULL); ^ cc1: some warnings being treated as errors vim +54 kernel/watchdog_hld.c 73ce0511 Babu Moger 2016-12-14 48 /* Callback function for perf event subsystem */ 73ce0511 Babu Moger 2016-12-14 49 static void watchdog_overflow_callback(struct perf_event *event, 73ce0511 Babu Moger 2016-12-14 50 struct perf_sample_data *data, 73ce0511 Babu Moger 2016-12-14 51 struct pt_regs *regs) 73ce0511 Babu Moger 2016-12-14 52 { 73ce0511 Babu Moger 2016-12-14 53 /* Ensure the watchdog never gets throttled */ 73ce0511 Babu Moger 2016-12-14 @54 event->hw.interrupts = 0; 73ce0511 Babu Moger 2016-12-14 55 b94f5118 Don Zickus 2017-01-24 56 if (atomic_read(&watchdog_park_in_progress) != 0) b94f5118 Don Zickus 2017-01-24 57 return; b94f5118 Don Zickus 2017-01-24 58 73ce0511 Babu Moger 2016-12-14 59 if (__this_cpu_read(watchdog_nmi_touch) == true) { 73ce0511 Babu Moger 2016-12-14 60 __this_cpu_write(watchdog_nmi_touch, false); 73ce0511 Babu Moger 2016-12-14 61 return; 73ce0511 Babu Moger 2016-12-14 62 } 73ce0511 Babu Moger 2016-12-14 63 73ce0511 Babu Moger 2016-12-14 64 /* check for a hardlockup 73ce0511 Babu Moger 2016-12-14 65 * This is done by making sure our timer interrupt 73ce0511 Babu Moger 2016-12-14 66 * is incrementing. The timer interrupt should have 73ce0511 Babu Moger 2016-12-14 67 * fired multiple times before we overflow'd. If it hasn't 73ce0511 Babu Moger 2016-12-14 68 * then this is a good indication the cpu is stuck 73ce0511 Babu Moger 2016-12-14 69 */ 73ce0511 Babu Moger 2016-12-14 70 if (is_hardlockup()) { 73ce0511 Babu Moger 2016-12-14 71 int this_cpu = smp_processor_id(); 73ce0511 Babu Moger 2016-12-14 72 73ce0511 Babu Moger 2016-12-14 73 /* only print hardlockups once */ 73ce0511 Babu Moger 2016-12-14 74 if (__this_cpu_read(hard_watchdog_warn) == true) 73ce0511 Babu Moger 2016-12-14 75 return; 73ce0511 Babu Moger 2016-12-14 76 73ce0511 Babu Moger 2016-12-14 77 pr_emerg("Watchdog detected hard LOCKUP on cpu %d", this_cpu); 73ce0511 Babu Moger 2016-12-14 78 print_modules(); 73ce0511 Babu Moger 2016-12-14 79 print_irqtrace_events(current); 73ce0511 Babu Moger 2016-12-14 80 if (regs) 73ce0511 Babu Moger 2016-12-14 81 show_regs(regs); 73ce0511 Babu Moger 2016-12-14 82 else 73ce0511 Babu Moger 2016-12-14 83 dump_stack(); 73ce0511 Babu Moger 2016-12-14 84 73ce0511 Babu Moger 2016-12-14 85 /* 73ce0511 Babu Moger 2016-12-14 86 * Perform all-CPU dump only once to avoid multiple hardlockups 73ce0511 Babu Moger 2016-12-14 87 * generating interleaving traces 73ce0511 Babu Moger 2016-12-14 88 */ 73ce0511 Babu Moger 2016-12-14 89 if (sysctl_hardlockup_all_cpu_backtrace && 73ce0511 Babu Moger 2016-12-14 90 !test_and_set_bit(0, &hardlockup_allcpu_dumped)) 73ce0511 Babu Moger 2016-12-14 91 trigger_allbutself_cpu_backtrace(); 73ce0511 Babu Moger 2016-12-14 92 73ce0511 Babu Moger 2016-12-14 93 if (hardlockup_panic) 73ce0511 Babu Moger 2016-12-14 94 nmi_panic(regs, "Hard LOCKUP"); 73ce0511 Babu Moger 2016-12-14 95 73ce0511 Babu Moger 2016-12-14 96 __this_cpu_write(hard_watchdog_warn, true); 73ce0511 Babu Moger 2016-12-14 97 return; 73ce0511 Babu Moger 2016-12-14 98 } 73ce0511 Babu Moger 2016-12-14 99 73ce0511 Babu Moger 2016-12-14 100 __this_cpu_write(hard_watchdog_warn, false); 73ce0511 Babu Moger 2016-12-14 101 return; 73ce0511 Babu Moger 2016-12-14 102 } 73ce0511 Babu Moger 2016-12-14 103 73ce0511 Babu Moger 2016-12-14 104 /* 73ce0511 Babu Moger 2016-12-14 105 * People like the simple clean cpu node info on boot. 73ce0511 Babu Moger 2016-12-14 106 * Reduce the watchdog noise by only printing messages 73ce0511 Babu Moger 2016-12-14 107 * that are different from what cpu0 displayed. 73ce0511 Babu Moger 2016-12-14 108 */ 8dcde9de Prarit Bhargava 2017-02-22 109 static unsigned long firstcpu_err; 8dcde9de Prarit Bhargava 2017-02-22 110 static atomic_t watchdog_cpus; 73ce0511 Babu Moger 2016-12-14 111 73ce0511 Babu Moger 2016-12-14 112 int watchdog_nmi_enable(unsigned int cpu) 73ce0511 Babu Moger 2016-12-14 113 { 73ce0511 Babu Moger 2016-12-14 114 struct perf_event_attr *wd_attr; 73ce0511 Babu Moger 2016-12-14 115 struct perf_event *event = per_cpu(watchdog_ev, cpu); 8dcde9de Prarit Bhargava 2017-02-22 116 int firstcpu = 0; 73ce0511 Babu Moger 2016-12-14 117 73ce0511 Babu Moger 2016-12-14 118 /* nothing to do if the hard lockup detector is disabled */ 73ce0511 Babu Moger 2016-12-14 119 if (!(watchdog_enabled & NMI_WATCHDOG_ENABLED)) 73ce0511 Babu Moger 2016-12-14 120 goto out; 73ce0511 Babu Moger 2016-12-14 121 73ce0511 Babu Moger 2016-12-14 122 /* is it already setup and enabled? */ 73ce0511 Babu Moger 2016-12-14 @123 if (event && event->state > PERF_EVENT_STATE_OFF) 73ce0511 Babu Moger 2016-12-14 124 goto out; 73ce0511 Babu Moger 2016-12-14 125 73ce0511 Babu Moger 2016-12-14 126 /* it is setup but not enabled */ 73ce0511 Babu Moger 2016-12-14 127 if (event != NULL) 73ce0511 Babu Moger 2016-12-14 128 goto out_enable; 73ce0511 Babu Moger 2016-12-14 129 8dcde9de Prarit Bhargava 2017-02-22 130 if (atomic_inc_return(&watchdog_cpus) == 1) 8dcde9de Prarit Bhargava 2017-02-22 131 firstcpu = 1; 8dcde9de Prarit Bhargava 2017-02-22 132 73ce0511 Babu Moger 2016-12-14 133 wd_attr = &wd_hw_attr; 73ce0511 Babu Moger 2016-12-14 134 wd_attr->sample_period = hw_nmi_get_sample_period(watchdog_thresh); 73ce0511 Babu Moger 2016-12-14 135 73ce0511 Babu Moger 2016-12-14 136 /* Try to register using hardware perf events */ 73ce0511 Babu Moger 2016-12-14 @137 event = perf_event_create_kernel_counter(wd_attr, cpu, NULL, watchdog_overflow_callback, NULL); 73ce0511 Babu Moger 2016-12-14 138 8dcde9de Prarit Bhargava 2017-02-22 139 /* save the first cpu's error for future comparision */ 8dcde9de Prarit Bhargava 2017-02-22 140 if (firstcpu && IS_ERR(event)) :::::: The code at line 54 was first introduced by commit :::::: 73ce0511c43686095efd2f65ef564aab952e07bc kernel/watchdog.c: move hardlockup detector to separate file :::::: TO: Babu Moger <[email protected]> :::::: CC: Linus Torvalds <[email protected]> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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