69 #define for_each_watchdog_cpu(cpu) \  argument
70 	for_each_cpu_and((cpu), cpu_online_mask, &watchdog_cpumask)
240 	int cpu;  in touch_all_softlockup_watchdogs()  local
247 	for_each_watchdog_cpu(cpu)  in touch_all_softlockup_watchdogs()
248 		per_cpu(watchdog_touch_ts, cpu) = 0;  in touch_all_softlockup_watchdogs()
370 static int watchdog_nmi_enable(unsigned int cpu);
371 static void watchdog_nmi_disable(unsigned int cpu);
493 static void watchdog_enable(unsigned int cpu)  in watchdog_enable()  argument
502 	watchdog_nmi_enable(cpu);  in watchdog_enable()
513 static void watchdog_disable(unsigned int cpu)  in watchdog_disable()  argument
520 	watchdog_nmi_disable(cpu);  in watchdog_disable()
523 static void watchdog_cleanup(unsigned int cpu, bool online)  in watchdog_cleanup()  argument
525 	watchdog_disable(cpu);  in watchdog_cleanup()
528 static int watchdog_should_run(unsigned int cpu)  in watchdog_should_run()  argument
542 static void watchdog(unsigned int cpu)  in watchdog()  argument
561 		watchdog_nmi_disable(cpu);  in watchdog()
572 static int watchdog_nmi_enable(unsigned int cpu)  in watchdog_nmi_enable()  argument
575 	struct perf_event *event = per_cpu(watchdog_ev, cpu);  in watchdog_nmi_enable()
593 	event = perf_event_create_kernel_counter(wd_attr, cpu, NULL, watchdog_overflow_callback, NULL);  in watchdog_nmi_enable()
596 	if (cpu == 0 && IS_ERR(event))  in watchdog_nmi_enable()
601 		if (cpu == 0 || cpu0_err)  in watchdog_nmi_enable()
619 	if (cpu > 0 && (PTR_ERR(event) == cpu0_err))  in watchdog_nmi_enable()
624 		pr_info("disabled (cpu%i): not supported (no LAPIC?)\n", cpu);  in watchdog_nmi_enable()
627 			 cpu);  in watchdog_nmi_enable()
630 			cpu, PTR_ERR(event));  in watchdog_nmi_enable()
638 	per_cpu(watchdog_ev, cpu) = event;  in watchdog_nmi_enable()
640 	perf_event_enable(per_cpu(watchdog_ev, cpu));  in watchdog_nmi_enable()
645 static void watchdog_nmi_disable(unsigned int cpu)  in watchdog_nmi_disable()  argument
647 	struct perf_event *event = per_cpu(watchdog_ev, cpu);  in watchdog_nmi_disable()
651 		per_cpu(watchdog_ev, cpu) = NULL;  in watchdog_nmi_disable()
656 	if (cpu == 0) {  in watchdog_nmi_disable()
663 static int watchdog_nmi_enable(unsigned int cpu) { return 0; }  in watchdog_nmi_enable()  argument
664 static void watchdog_nmi_disable(unsigned int cpu) { return; }  in watchdog_nmi_disable()  argument
692 	int cpu, ret = 0;  in watchdog_park_threads()  local
694 	for_each_watchdog_cpu(cpu) {  in watchdog_park_threads()
695 		ret = kthread_park(per_cpu(softlockup_watchdog, cpu));  in watchdog_park_threads()
711 	int cpu;  in watchdog_unpark_threads()  local
713 	for_each_watchdog_cpu(cpu)  in watchdog_unpark_threads()
714 		kthread_unpark(per_cpu(softlockup_watchdog, cpu));  in watchdog_unpark_threads()